ZL50057/8
12 K-Channel Digital Switch with High Jitter
Tolerance, Per Stream Rate Conversion (2, 4, 8,
16, or 32 Mbps), and 48 Inputs and 48 Outputs
Data Sheet
Features
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12,288-channel x 12,288-channel non-blocking
unidirectional switching.The Backplane and Local
inputs and outputs can be combined to form a
non-blocking switching matrix with 48 input
streams and 48 output streams
8,192-channel x 4,096-channel non-blocking
Backplane input to Local output stream switch
4,096-channel x 8,192-channel non-blocking
Local input to Backplane output stream switch
8,192-channel x 8,192-channel non-blocking
Backplane input to Backplane output switch
4,096-channel x 4,096-channel non-blocking
Local input to Local output stream switch
Rate conversion on all data paths, Backplane-to-
Local, Local-to-Backplane, Backplane-to-
Backplane and Local-to-Local streams
Backplane port accepts 32 input and 32 output
ST-BUS streams with data rates of 2.048 Mbps,
4.096 Mbps, 8.192 Mbps or 16.384 Mbps in any
combination, or a fixed allocation of 16 input and
16 output streams at 32.768 Mbps
Local port accepts 16 input and 16 output ST-
BUS streams with data rates of 2.048 Mbps,
V
DD_IO
V
DD_CORE
January 2006
Ordering Information
ZL50057GAC
272-Ball PBGA
ZL50058GAC
256 Ball PBGA
ZL50058GAG2 256 Ball PBGA**
**Pb Free Tin/Silver/Copper
-40°C to +85°C
4.096 Mbps, 8.192 Mbps or 16.384 Mbps in any
combination, or a fixed allocation of 8 input and 8
output streams at 32.768 Mbps
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Exceptional input clock jitter tolerance (17 ns for
16 Mbps or lower data rates, 14 ns for 32 Mbps)
Per-stream channel and bit delay for Local and
Backplane input streams
Per-stream advancement for Local and
Backplane output streams
Constant 2-frame throughput delay for frame
integrity
Per-channel high impedance output control for
Local and Backplane streams
Per-channel driven-high output control for Local
and Backplane streams
RESET
ODE
Trays
Trays
Trays
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V
SS (GND)
BSTi0-31
Backplane Data Memories
(8,192 channels)
Local
Interface
LSTi0-15
BSTo0-31
BCST0-3
BORS
Backplane
Interface
Backplane
Connection Memory
(8,192 locations)
Local
Connection Memory
(4,096 locations)
Local
Interface
LSTo0-15
LCST0-1
Local Data Memories
(4,096 channels)
Input
Timing Unit
Output
Timing
Unit
LORS
FP8i
FP8o
FP16o
C8o
C16o
C8i
PLL
Microprocessor Interface
and Internal Registers
Test Port
V
DD_PLL
DS CS R/W
A14-0
DTA
D15-0
TMS TDi TDo TCK TRST
Figure 1 - ZL50057/8 Functional Block Diagram
1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2003-2006, Zarlink Semiconductor Inc. All Rights Reserved.
ZL50057/8
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High impedance-control outputs for external drivers on Local and Backplane ports
Per-channel message mode for Local and Backplane output streams
Connection memory block programming for fast device initialization
BER testing for Local and Backplane ports
Automatic selection between ST-BUS and GCI-Bus operation
Non-multiplexed Motorola microprocessor interface
Conforms to the mandatory requirements of the IEEE-1149.1 (JTAG) standard
Memory Built-In-Self-Test (BIST), controlled via microprocessor register
1.8 V core supply voltage
3.3V I/O supply voltage
5 V tolerant inputs, outputs and I/Os
ZL50057 is pin-to-pin compatible with Zarlink’s MT90870 device
1
Data Sheet
Note 1: For software compatibility between ZL50057 and MT90870, please refer to Section 2.6.
Applications
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Central Office Switches (Class 5)
Media Gateways
Class-independent switches
Access Concentrators
Scalable TDM-Based Architectures
Digital Loop Carriers
2
Zarlink Semiconductor Inc.
ZL50057/8
Device Overview
Data Sheet
The ZL50057 and ZL50058 are two different packages of the same device. The ZL50057/8 has two data ports, the
Backplane and the Local port. The Backplane port has two independent modes of operation, either 32 input and 32
output streams operated at 2.048 Mbps, 4.096 Mbps, 8.192 Mbps or 16.384 Mbps, in any combination, or 16 input
and 16 output streams operated at 32.768 Mbps. The Local port has two independent modes of operation, either 16
input and 16 output streams operated at 2.048 Mbps, 4.096 Mbps, 8.192 Mbps or 16.384 Mbps, in any
combination, or 8 input and 8 output streams operated at 32.768 Mbps.
The ZL50057/8 contains two data memory blocks (Backplane and Local) to provide the following switching path
configurations:
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Input-to-Output Unidirectional, supporting 12 K x 12 K switching
Backplane-to-Local Bi-directional, supporting 8 K x 4 K data switching,
Local-to-Backplane Bi-directional, supporting 4 K x 8 K data switching,
Backplane-to-Backplane Bi-directional, supporting 8 K x 8 K data switching.
Local-to-Local Bi-directional, supporting 4 K x 4 K data switching.
The device contains two connection memory blocks, one for the Backplane output and one for the Local output.
Data to be output on the serial streams may come from either of the data memories (Connection Mode) or directly
from the connection memory contents (Message Mode).
In Connection Mode, the contents of the connection memory define, for each output stream and channel, the
source stream and channel (stored in data memory) to be switched.
In Message Mode, microprocessor data can be written to the connection memory for broadcast on the output
streams on a per channel basis. This feature is useful for transferring control and status information to external
circuits or other ST-BUS devices.
The device uses a master frame pulse (FP8i) and master clock (C8i) to define the input frame boundary and timing
for both the Backplane port and the Local port. The device will automatically detect whether an ST-BUS or a GCI-
Bus style frame pulse is being used. There is a two-frame delay from the time RESET is de-asserted to the
establishment of full switch functionality. During this period, the input frame pulse format is determined before
switching begins.
The device provides FP8o, FP16o, C8o and C16o outputs to support external devices connected to the outputs of
the Backplane and Local ports.
A non-multiplexed Motorola microprocessor port allows programming of the various device operation modes and
switching configurations. The microprocessor port provides access for Register read/write, Connection Memory
read/write and Data Memory read-only operations. The port has a 15-bit address bus, 16-bit data bus and 4 control
signals. The microprocessor may monitor channel data in the Backplane and Local data memories.
The mandatory requirements of the IEEE-1149.1 (JTAG) standard are fully supported via a dedicated test port.
The ZL50057 and ZL50058 are each available in one package:
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ZL50057: a 27 mm x 27 mm body, 1.27mm ball-pitch, 272-PBGA.
ZL50058: a 17 mm x 17 mm body, 1mm ball-pitch, 256-PBGA.
3
Zarlink Semiconductor Inc.
ZL50057/8
Table of Contents
Data Sheet
1.0 Unidirectional and bi-directional Switching Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
1.1 Flexible Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1.1.1 Non-Blocking Unidirectional Configuration (Typical System Configuration) . . . . . . . . . . . . . . . . . . 22
1.1.2 Non-Blocking bi-directional Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1.1.3 Blocking bi-directional Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.0 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1 Switching Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1.1 Unidirectional Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1.2 Backplane-to-Local Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1.3 Local-to-Backplane Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1.4 Backplane-to-Backplane Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1.5 Local-to-Local Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1.6 Port Data Rate Modes and Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.1.7 Local Port Rate Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.1.7.1 Local Input Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.1.7.2 Local Output Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.1.8 Backplane Port Rate Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.1.8.1 Backplane Input Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.1.8.2 Backplane Output Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.2 Frame Pulse Input and Master Input Clock Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2.3 Input Frame Pulse and Generated Frame Pulse Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.4 Jitter Tolerance Improvement Circuit - Frame Boundary Discriminator. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.5 Input Clock Jitter Tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2.6 Backward Compatibility with MT90870 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.0 Input and Output Offset Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.1 Input Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.1.1 Input Channel Delay Programming (Backplane and Local Input Streams) . . . . . . . . . . . . . . . . . . . 30
3.1.2 Input Bit Delay Programming (Backplane and Local Input Streams) . . . . . . . . . . . . . . . . . . . . . . . . 30
3.2 Output Advancement Programming (Backplane and Local Output Streams) . . . . . . . . . . . . . . . . . . . . . . 32
4.0 Port High Impedance Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.1 LORS Asserted LOW, Non-32Mbps Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.2 LORS Asserted LOW, 32Mbps Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4.3 LORS Asserted HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
4.4 BORS Asserted LOW, Non-32Mbps Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
4.5 BORS Asserted LOW, 32Mbps Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4.6 BORS Asserted HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
5.0 Data Delay Through the Switching Paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.0 Bit Error Rate Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.0 Microprocessor Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.0 Device Power-up, Initialization and Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.1 Power-Up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.2 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.3 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9.0 Connection Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9.1 Local Connection Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9.2 Backplane Connection Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.3 Connection Memory Block Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.3.1 Memory Block Programming Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
10.0 Memory Built-In-Self-Test (BIST) Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
11.0 JTAG Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
11.1 Test Access Port (TAP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
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Zarlink Semiconductor Inc.
ZL50057/8
Table of Contents
Data Sheet
11.2 TAP Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
11.2.1 Test Instruction Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
11.2.2 Test Data Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
11.2.2.3 The Device Identification Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
11.3 Boundary Scan Description Language (BSDL) File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
12.0 Memory Address Mappings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
12.1 Local Data Memory Bit Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
12.2 Backplane Data Memory Bit Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
12.3 Local Connection Memory Bit Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
12.4 Backplane Connection Memory Bit Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
13.0 Internal Register Mappings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
14.0 Detailed Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
14.1 Control Register (CR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
14.2 Block Programming Register (BPR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
14.3 Bit Error Rate Test Control Register (BERCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
14.4 Local Input Channel Delay Registers (LCDR0 to LCDR15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
14.4.1 Local Channel Delay Bits 8-0 (LCD8 - LCD0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
14.5 Local Input Bit Delay Registers (LIDR0 to LIDR15). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
14.5.1 Local Input Delay Bits 4-0 (LID[4:0]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
14.6 Backplane Input Channel Delay Registers (BCDR0 to BCDR31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
14.6.1 Backplane Channel Delay Bits 8-0 (BCD8 - BCD0). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
14.7 Backplane Input Bit Delay Registers (BIDR0 to BIDR31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
14.7.1 Backplane Input Delay Bits 4-0 (BID[4:0]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
14.8 Local Output Advancement Registers (LOAR0 to LOAR15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
14.8.1 Local Output Advancement Bits 1-0 (LOA1-LOA0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
14.9 Backplane Output Advancement Registers (BOAR0 - BOAR31) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
14.9.1 Backplane Output Advancement Bits 1-0 (BOA1-BOA0). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
14.10 Local Bit Error Rate (BER) Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
14.10.1 Local BER Start Send Register (LBSSR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
14.10.2 Local Transmit BER Length Register (LTXBLR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
14.10.3 Local Receive BER Length Register (LRXBLR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
14.10.4 Local BER Start Receive Register (LBSRR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
14.10.5 Local BER Count Register (LBCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
14.11 Backplane Bit Error Rate (BER) Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
14.11.1 Backplane BER Start Send Register (BBSSR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
14.11.2 Backplane Transmit BER Length Register (BTXBLR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
14.11.3 Backplane Receive BER Length Register (BRXBLR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
14.11.4 Backplane BER Start Receive Register (BBSRR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
14.11.5 Backplane BER Count Register (BBCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
14.12 Local Bit Rate Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
14.12.1 Local Input Bit Rate Registers (LIBRR0 - LIBRR15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
14.12.2 Local Output Bit Rate Registers (LOBRR0 - LOBRR15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
14.13 Backplane Bit Rate Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
14.13.1 Backplane Input Bit Rate Registers (BIBRR0 - BIBRR31). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
14.13.2 Backplane Output Bit Rate Registers (BOBRR0 - BOBRR31) . . . . . . . . . . . . . . . . . . . . . . . . . . 87
14.14 Memory BIST Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
14.15 Device Identification Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
15.0 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
16.0 AC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
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