89hpes12n3a Integrated Device Technology, 89hpes12n3a Datasheet - Page 8

• Manufacturer Part Number: 89hpes12n3a
• Description: 12-lane, 3-port Pcie I/o Expansion Switch
• Manufacturer: Integrated Device Technology

Pin Characteristics
IDT 89HPES12N3A Data Sheet
Note: Some input pads of the PES12N3A do not contain internal pull-ups or pull-downs. Unused inputs should be tied off to appropriate
levels. This is especially critical for unused control signal inputs which, if left floating, could adversely affect operation. Also, any input pin left
floating can cause a slight increase in power consumption.
PCI Express Interface
SMBus
General Purpose I/O
System Pins
Function
PE0RN[3:0]
PE0RP[3:0]
PE0TN[3:0]
PE0TP[3:0]
PE2RN[3:0]
PE2RP[3:0]
PE2TN[3:0]
PE2TP[3:0]
PE4RN[3:0]
PE4RP[3:0]
PE4TN[3:0]
PE4TP[3:0]
PEREFCLKN[2:1]
PEREFCLKP[2:1]
REFCLKM
MSMBADDR[4:1]
MSMBCLK
MSMBDAT
SSMBADDR[5,3:1]
SSMBCLK
SSMBDAT
GPIO[7:0]
CCLKDS
CCLKUS
MSMBSMODE
PERSTN
RSTHALT
SWMODE[3:0]
Pin Name
Table 8 Pin Characteristics (Part 1 of 2)
Type
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
8 of 31
LVPECL/
Buffer
LVTTL
LVTTL
LVTTL
LVTTL
CML
CML
High Drive
Diff. Clock
Serial link
Type
Input
Input
Input
Input
Input
STI
I/O
STI
STI
STI
2
Resistor
Internal
pull-down
pull-down
pull-down
pull-down
pull-up
pull-up
pull-up
pull-up
pull-up
1
Refer to Table 9
pull-up on board
pull-up on board
pull-up on board
pull-up on board
Notes
March 27, 2008