PI6LC48H04
PCIe® 3.0 and Ethernet Clock Generator with 4 HCSL Outputs
Features
ÎÎ
PCIe® 3.0/2.0/1.0 compliant
Description
The PI6LC48H04 is a clock generator compliant to PCI Express®
3.0/2.0/1.0, Ethernet and other requirements. The device is used
for networking or embedded systems.
The PI6LC48H04 provides four differential (Low Power HCSL)
or LVDS outputs. Using Pericom's patented Phase Locked Loop
(PLL) techniques, the device takes a 25MHz crystal input and
produces four pairs of differential outputs (HCSL) at 156.25MHz,
100MHz, 125MHz, 133.33MHz and 200MHz clock frequencies.
à
PCIe 3.0 Phase jitter - 0.45ps RMS (High Freq. Typ.)
ÎÎ
LVDS compatible outputs
ÎÎ
Supply voltage of 3.3V±5% and 2.5V±5%
ÎÎ
25MHz crystal or clock input frequency
ÎÎ
HCSL outputs, 0.7V low power differential pair
ÎÎ
Jitter 35ps cycle-to-cycle (typ)
ÎÎ
RMS phase jitter 12kHz ~ 20MHz @ 100MHz - 0.32ps (typ)
ÎÎ
RMS phase jitter 12kHz ~ 20MHz @ 125MHz, 156.25MHz,
200MHz - 0.3ps (typ)
ÎÎ
Industrial temperature range
ÎÎ
Packaging: (Pb-free and Green)
à
20-pin TSSOP (L20)
Block Diagram
Pin Configuration (20-Pin TSSOP)
VDDX
VDDOA
OE0&1
Q0+
S[1:0]
Control
Logic
2
Q0-
VDDX
OE0&1
S0
S1
XTAL_IN/ CLK
XTAL_OUT
PD#
OE
GNDX
VSwing_Ctrl
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Q0+
Q0-
Q1+
Q1-
GNDOA
VDDOA
Q2+
Q2-
Q3+
Q3-
Phase
Lock
Loop
Q1+
Q1-
Q2+
Q2-
Q3+
Q3-
OE
XTAL_IN/CLK
25 MHz
crystal or clock
XTAL_OUT
Pulling
Capacitors
Crystal
Driver
GNDX
GNDOA VSWING_CTRL
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PI6LC48H04
Rev.A
04/07/2015
PCIe 3.0 and Ethernet Clock Generator with 4 HCSL Outputs
Pin Description
Pin # Pin Name
1
2
3
4
5
6
7
VDDX
OE0&1
S0
S1
PI6LC48H04
I/O Type
Power
Input
Input
Input
Pull-up
Pull-up
Pull-up
Description
Crystal supply pin.
Output enable pin for Q0+/- and Q1+/-. When HIGH, output is enabled
and active. When LOW, output is disabled and in high impedance state.
Don’t care if OE is LOW. Internal 343kΩpull-up resistor.
Frequency select pin. Internal 343kΩ pull-up resistor.
Frequency select pin. Internal 343kΩ pull-up resistor.
Crystal or clock input. Connect to a 25MHz crystal or single ended
clock.
Crystal output. Leave unconnected for clock input.
Pull-up
Power down pin. When HIGH, the device is in normal operation. When
LOW, the device is in power down mode and all outputs are in high
impedance state. Internal 343kΩ pull-up resistor.
Output enable pin for all outputs. When HIGH, Q2+/- and Q3+/- are en-
abled and active and Q0+/- and Q1+/- depends on OE0&1. When LOW,
all outputs are disabled and in high impedance state and not dependent
on OE0&1. Internal 343kΩ pull-up resistor.
Crystal ground.
Pull-up and
pull down
VOH selection pin for all outputs. Tri-level selction for different voltage
swings.
Low power HCSL clock output 3.
Low power HCSL clock output 2.
Analog and output supply pin.
Analog and output ground.
Low power HCSL clock output 1.
Low power HCSL clock output 0.
Table 1a: Output Select Table (Generating other frequencies)
Xtal Input Freq.
21.33MHz
26.66MHz
S1
0
1
S0
0
0
CLK(MHz)
133.3MHz
133.3MHz
CLK(MHz)
156.25
100
125
200 (Default)
XTAL_IN/CLK Input
XTAL_OUT
PD#
Output
Input
8
9
10
11,12
13,14
15
16
17,18
19,20
OE
GNDX
VSWING_
CTRL
Q3-, Q3+
Q2-, Q2+
VDDOA
GNDOA
Q1-, Q1+
Q0-, Q0+
S1
0
0
1
1
Input
Power
Input
Output
Output
Power
Power
Output
Output
S0
0
1
0
1
Pull-up
Table 1: Output Select Table (25MHz Xtal Input)
Note: Above frequencies are only for the provided settings. Do
not deviate from provided S1, S0 settings. For any other output
frequencies, please contact Pericom
Q1+/-
HiZ
HiZ
HiZ
Active
HiZ
HiZ
Active
Active
Q2+/-
HiZ
HiZ
Active
Active
Q3+/-
Table 2: Output Enable Table
OE
0
0
1
1 (Default)
OE0&1
0
1
0
1 (Default)
Q0+/-
HiZ
HiZ
HiZ
Active
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PI6LC48H04
Rev.A
04/07/2015
PCIe 3.0 and Ethernet Clock Generator with 4 HCSL Outputs
PI6LC48H04
Table 3: VSWING_CTRL Select Table
VSWING_CTRL
0
Open (default)
1
Output Amplitude (V)
0.63
0.75
0.87
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15-0047
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PI6LC48H04
Rev.A
04/07/2015
PCIe 3.0 and Ethernet Clock Generator with 4 HCSL Outputs
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Supply Voltage to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . 4.6V
All Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.5V to V
DD
+0.5V
Ambient Operating Temperature . . . . . . . . . . . . . . . . . . -40 to +85°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65 to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Soldering Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
ESD Protection (HBM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 V
PI6LC48H04
Note:
Stresses greater than those listed under MAXI-
MUM RATINGS may cause permanent damage to
the device. This is a stress rating only and func-
tional operation of the device at these or any other
conditions above those indicated in the operational
sections of this specification is not implied. Expo-
sure to absolute maximum rating conditions for
extended periods may affect reliability.
Electrical Specifications
Recommended Operation Conditions
Parameter
Ambient Operating Temperature
Power Supply Voltage (measured with respect to GND)
Min.
-40
3.135
2.375
Typ.
3.3
2.5
Max.
+85
3.465
2.625
Unit
°C
V
V
All trademarks are property of their respective owners.
15-0047
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www.pericom.com
PI6LC48H04
Rev.A
04/07/2015
PCIe 3.0 and Ethernet Clock Generator with 4 HCSL Outputs
DC Characteristics (T
A
= -40°C to +85°C)
Symbol
V
DD
PI6LC48H04
Parameter
Supply Voltage
Conditions
Min.
3.135
2.375
Typ.
3.3
2.5
Max.
3.465
2.625
V
DD
+0.3
V
DD
+0.3
V
DD
+0.3
0.8
0.7
V
DD
x 0.3
5
150
20
120
65
50
Unit
V
V
V
V
V
V
V
V
OE, S0, S1, OE0&1, PD# @ VDD=3.3V
V
IH
Input High Voltage
(1)
OE, S0, S1, OE0&1, PD# @ VDD=2.5V
VSWING_CTRL @ VDD = 3.3V and 2.5V
OE, S0, S1, OE0&1, PD# @ VDD=3.3V
V
IL
Input Low Voltage
(1)
OE, S0, S1, OE0&1, PD# @ VDD=2.5V
VSWING_CTRL @ VDD = 3.3V and 2.5V
I
IH
I
IL
I
DD
(2)
2.0
1.7
V
DD
x 0.7
GND -0.3
GND -0.3
GND -0.3
-5
-20
-150
Input High Current
Input Low Current
Operating Supply
Current
Power Down Supply
Current
Input Capacitance
Output Capacitance
OE, S0, S1, OE0&1, PD# with Vin = V
DD
VSWING_CTRL with Vin = V
DD
OE, S0, S1, OE0&1, PD# with Vin = 0
VSWING_CTRL with Vin = 0
C
L
= 2pF
OE = LOW
µA
mA
mA
µA
pF
pF
I
DDOE
I
DDPD
C
IN
C
OUT
Notes:
@ 25MHz
@ 25MHz
7
6
1. Single edge is monotonic when transitioning through region.
2. Total current consumption of device, inclusive of I
DDOE
All trademarks are property of their respective owners.
15-0047
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PI6LC48H04
Rev.A
04/07/2015
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