ICs for Communications
ISDN Subscriber Access Controller
for U
pn
-Interface Terminals
SmartLink-P
PSB 2197
User’s Manual 02.95
PEB 2197
Revision History:
Previous Releases:
Page
Original Version: 02.95
Subjects (changes since last revision)
Data Classification
Maximum Ratings
Maximum ratings are absolute ratings; exceeding only one of these values may cause
irreversible damage to the integrated circuit.
Characteristics
The listed characteristics are ensured over the operating range of the integrated circuit.
Typical characteristics specify mean values expected over the production spread. If not
otherwise specified, typical characteristics apply at
T
A
= 25 °C and the given supply
voltage.
Operating Range
In the operating range the functions given in the circuit description are fulfilled.
For detailed technical information about
"Processing Guidelines"
and
"Quality Assurance"
for ICs, see our
"Product Overview".
General Information
Table of Contents
1
1.1
1.2
1.3
1.4
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
1.4.6
2
2.1
2.1.1
2.1.2
2.1.3
2.1.3.1
2.1.3.2
2.1.3.3
2.1.4
2.1.5
2.1.6
2.1.6.1
2.1.6.2
2.2
2.2.1
2.2.2
2.2.3
2.2.3.1
2.2.3.2
2.2.4
2.2.5
2.3
2.3.1
2.3.2
2.3.3
2.3.3.1
2.3.3.2
2.3.4
2.3.5
2.3.6
Page
Features
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
System Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Low Cost Digital Telephone Using the SmartLink-P . . . . . . . . . . . . . . . . .20
Low Cost Digital Feature Phone Using the SmartLink-P . . . . . . . . . . . . . .21
U
pn
-Terminal Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Network Termination Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
S/T-Interface Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
HDLC-Controller on IOM®-2 Extensions . . . . . . . . . . . . . . . . . . . . . . . . . .25
Functional Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Terminal Equipment (TE) Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
General Functions and Device Architecture (TE-mode) . . . . . . . . . . . . . .26
Clock Generation (TE-Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Interfaces (TE-Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Microcontroller Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
IOM®-2 Interface in TE-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Upn-Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
D-Channel-Arbitration in TE-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
HDLC-Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Terminal Specific Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
LCD-Contrast Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Ring Tone Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Terminal Repeater (TR) Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
General Functions and Device Architecture (TR-Mode) . . . . . . . . . . . . . .56
Clock Generation (TR-Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Interfaces (TR-Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
IOM®-2 Interface in TR-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Upn-lnterface in TR-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
D-Channel-Arbitration in TR-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
HDLC-Controller Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
General Functions and Device Architecture (HDLC-Controller Mode) . . .63
Clock Generation (HDLC-Controller Mode) . . . . . . . . . . . . . . . . . . . . . . . .64
Interfaces (HDLC-Controller Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Microcontroller Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
IOM®-2 Interface in HDLC-Controller Mode . . . . . . . . . . . . . . . . . . . . . . .65
D-Channel-Arbitration in HDLC-Controller Mode . . . . . . . . . . . . . . . . . . .66
HDLC-Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Semiconductor Group
3
02.95
General Information
Table of Contents
3
3.1
3.1.1
3.1.2
3.1.2.1
3.1.2.2
3.1.2.3
3.1.2.4
3.1.2.5
3.1.2.6
3.1.3
3.1.4
3.1.4.1
3.1.4.2
3.1.4.3
3.1.5
3.1.6
3.2
3.2.1
3.2.1.1
3.2.1.2
3.2.1.3
3.2.1.4
3.2.1.5
3.2.2
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
4
4.1
5
6
Page
Operational Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
TE-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Interrupt Structure and Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Control of the Upn-Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Power-Down of the IOM®-2 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Activation/Deactivation of the Upn-lnterface . . . . . . . . . . . . . . . . . . . . . . .68
Layer-1 Command/lndication Codes in TE-Mode . . . . . . . . . . . . . . . . . . .69
State Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
TE-Mode State Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Example of the Activation/Deactivation . . . . . . . . . . . . . . . . . . . . . . . . . . .74
Operation of the Serial Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . .75
Control of the HDLC-Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
HDLC-Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
HDLC-Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Examples for the HDLC-Controller Operation . . . . . . . . . . . . . . . . . . . . . .79
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
TR-Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Control of the Upn-Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Activation/Deactivation of the IOM®-2 Interface . . . . . . . . . . . . . . . . . . . .96
Layer-1 Command/Indication Codes in TR-Mode . . . . . . . . . . . . . . . . . . .97
State Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
TR-Mode State Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Example of the Activation/Deactivation . . . . . . . . . . . . . . . . . . . . . . . . . .101
D-Channel Access Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
HDLC-Controller Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Interrupt Structure and Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Control of the Serial Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Control of the HDLC-Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Control of Terminal Specific Functions . . . . . . . . . . . . . . . . . . . . . . . . . .104
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Register Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
SmartLink-P Register Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
Package Outlines
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
IOM
®
, IOM
®
-1, IOM
®
-2, SICOFI
®
, SICOFI
®
-2, SICOFI
®
-4, SICOFI
®
-4µC, SLICOFI
®
, ARCOFI
®
, ARCOFI
®
-BA,
ARCOFI
®
-SP, EPIC
®
-1, EPIC
®
-S, ELIC
®
, IPAT
®
-2, ITAC
®
, ISAC
®
-S, ISAC
®
-S TE, ISAC
®
-P, ISAC
®
-P TE, IDEC
®
,
SICAT
®
, OCTAT
®
-P, QUAT
®
-S are registered trademarks of Siemens AG.
MUSAC
™
-A, FALC
™
54, IWE
™
, SARE
™
, UTPT
™
, ASM
™
, ASP
™
are trademarks of Siemens AG.
Purchase of Siemens
I
2
C components conveys a license under the Philips’
I
2
C patent to use the components in
the
I
2
C-system provided the system conforms to the
I
2
C specifications defined by Philips. Copyright Philips 1983.
Semiconductor Group
4
02.95
General Information
Introduction
The PSB 2197, SmartLink-P, implements the subscriber access functions for a digital
terminal to be connected to a two-wire U
pn
-interface.
The PSB 2197 SmartLink-P is an optimized device for TE-applications, covering the
complete layer-1 and basic layer-2 functions for digital terminals.
The PSB 2197 SmartLink-P combines the functions of the U
pn
-transceiver with reduced
loop length (one channel of the OCTAT
®
-P PEB 2096) and a simple HDLC-controller for
signaling data onto one chip.
A pulse width modulator is included to provide an LCD-contrast control or a ring tone
signal.
The serial control port of the SmartLink-P is compatible to most serial interfaces of
microcontrollers. In addition it provides the microcontroller clock signal as well as an
undervoltage detector and reset generation including a watchdog function.
The Terminal Repeater function of the SmartLink-P allows to cascade two telephones
which are controlled by one U
pn
-interface from the line card or to extend the loop length
by using an IEC-Q transceiver.
The SmartLink-P can also be used as a simple HDLC-controller which provides the
TIC-bus access procedure. In this mode, the U
pn
-transceiver is inactive.
The PSB 2197 SmartLink-P interfaces to voice/data devices via the IOM
®
-2 interface
and provides an additional bit clock and strobe signal for standard codecs. The upstream
B-channel information may be muted or loop back the downstream data.
The PSB 2197 SmartLink-P is a 1-micron CMOS device offered in a P-DSO-28 package.
It operates from a single 5-V supply.
Note:
U
pn
in the document refers to a version of the U
p0
-standard with a reduced loop
length.
Semiconductor Group
5
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