89H34H16G2ZCBL IDT, 89H34H16G2ZCBL Datasheet - Page 4

• Manufacturer Part Number: 89H34H16G2ZCBL
• Description: Peripheral Drivers & Components - PCIs
• Manufacturer: IDT

Specifications of 89H34H16G2ZCBL

• Part # Aliases: IDT89H34H16G2ZCBL

Hot-Plug Interface
utilizes an external I/O expander, such as that used on PC motherboards, connected to the SMBus master interface. Following reset and configura-
tion, whenever the state of a Hot-Plug output needs to be modified, the PES32T8G2 generates an SMBus transaction to the I/O expander with the
new value of all of the outputs. Whenever a Hot-Plug input changes, the I/O expander generates an interrupt which is received on the IOEXPINTN
input pin (alternate function of GPIO) of the PES32T8G2. In response to an I/O expander interrupt, the PES32T8G2 generates an SMBus transaction
to read the state of all of the Hot-Plug inputs from the I/O expander.
General Purpose Input/Output
may be configured independently as an input or output through software control. Some GPIO pins are shared with other on-chip functions. These
alternate functions may be enabled via software, SMBus slave interface, or serial configuration EEPROM.
IDT 89HPES32T8G2 Data Sheet
The PES32T8G2 supports PCI Express Hot-Plug on each downstream port. To reduce the number of pins required on the device, the PES32T8G2
The PES32T8G2 provides 9 General Purpose Input/Output (GPIO) pins that may be used by the system designer as bit I/O ports. Each GPIO pin
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November 28, 2011