89hpes12n3a Integrated Device Technology, 89hpes12n3a Datasheet - Page 5

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

IDT 89HPES12N3A Data Sheet
MSMBSMODE
Signal
Signal
CCLKDS
CCLKUS
GPIO[0]
GPIO[1]
GPIO[2]
GPIO[3]
GPIO[4]
GPIO[5]
GPIO[6]
GPIO[7]
Type
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: P2RSTN
Alternate function pin type: Output
Alternate function: Reset output for downstream port 2
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: P4RSTN
Alternate function pin type: Output
Alternate function: Reset output for downstream port 4
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: IOEXPINTN0
Alternate function pin type: Input
Alternate function: I/O Expander interrupt 0 input
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: IOEXPINTN2
Alternate function pin type: Input
Alternate function: I/O Expander interrupt 2 input
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: GPEN
Alternate function pin type: Output
Alternate function: General Purpose Event (GPE) output
Common Clock Downstream. When the CCLKDS pin is asserted, it indi-
cates that a common clock is being used between the downstream device
and the downstream port.
Common Clock Upstream. When the CCLKUS pin is asserted, it indi-
cates that a common clock is being used between the upstream device and
the upstream port.
Master SMBus Slow Mode. The assertion of this pin indicates that the
master SMBus should operate at 100 KHz instead of 400 KHz. This value
may not be overridden.
Table 4 General Purpose I/O Pins
Table 5 System Pins (Part 1 of 2)
5 of 31
Name/Description
Name/Description
March 27, 2008