PI6C20400ALE Pericom Semiconductor, PI6C20400ALE Datasheet - Page 2

• Manufacturer Part Number: PI6C20400ALE
• Description: Clock Buffer 1:4 PCI Express Gen 2 Zero Delay Buffer
• Manufacturer: Pericom Semiconductor

Specifications of PI6C20400ALE

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin Descriptions
Serial Data Interface (SMBus)
PI6C20400A is a slave only SMBus device that supports indexed block read and indexed block write protocol using a single 7-bit
address and read/write bit as shown below.
Address Assignment
Data Protocol
Notes:
1.
SRC & SRC#
OE_0 & OE_3
OE_INV
OUT[0:3] & OUT[0:3]#
PLL/BYPASS#
SCLK
SDA
IREF
SRC_STOP#
PLL_BW#
PWRDWN#
V
VSS
VSS_A
VDD_A
Start
1 bit
bit
DD
Register offset for indicating the starting register for indexed block write and indexed block read. Byte Count in write mode cannot be 0.
A6
1
Pin Name
10-0181
7 bits
Slave
Addr
R/W
A5
1
1
Input
Input
Input
Output
Input
Input
I/O
Input
Input
Input
Input
Power
Ground
Ground
Power
Ack
Type
1
Register
offset
8 bits
A4
0
2, 3
8, 21
25
6, 7, 9, 10, 19, 20,
22, 23
12
13
14
26
16
17
15
1, 5, 11, 18, 24
4
27
28
Pin No
Ack
1
A3
1
Count
8 bits
Byte
= N
0.7V Differential SRC input from PI6C410 clock synthesizer
3.3V LVTTL input for enabling outputs, active high.
OE_0 for OUT0 / OUT0#
OE_3 for OUT3 / OUT3#
3.3V LVTTL input for inverting the OE, SRC_STOP# and
PWRDWN# pins.
When 0 = same stage
When 1 = OE_0, OE_3, SRC_STOP#, PWRDWN# inverted.
0.7V Differential outputs
3.3V LVTTL input for selecting fan-out of PLL operation.
SMBus compatible SCLOCK input
SMBus compatible SDATA
External resistor connection to set the differential output current
3.3V LVTTL input for SRC stop, active low
3.3V LVTTL input for selecting the PLL bandwidth
3.3V LVTTL input for Power Down operation, active low
3.3V Power Supply for Outputs
Ground for Outputs
Ground for PLL
3.3V Power Supply for PLL
2
Ack
1
A2
1
Byte 0
8 bits
1:4 Clock Driver for Intel PCIe® Chipsets
Data
A1
1
Ack
1
Description
…
A0
Byte N
0
8 bits
Data
- 1
PS9062
Ack
PI6C20400A
1
R/W
0/1
Stop
1 bit
bit
06/14/10