![](http://datasheet.mmic.net.cn/370000/79RC32438_datasheet_16682933/79RC32438_9.png)
9 of 59
May 25, 2004
IDT 79RC32438
GPIO[18]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: DMAFINN0
Alternate function: External DMA channel 0 finished output.
GPIO[19]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: DMAFINN1
Alternate function: External DMA channel 1 finished output.
GPIO[20]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin
Alternate function pin name: MADDR[22]
Alternate function: Memory and peripheral bus address output.
GPIO[21]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: MADDR[23]
Alternate function: Memory and peripheral bus address output.
GPIO[22]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: MADDR[24]
Alternate function: Memory and peripheral bus address output.
GPIO[23]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: MADDR[25]
Alternate function: Memory and peripheral bus address output.
GPIO[24]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIREQN[4]
Alternate function: PCI Request 4 input or output.
GPIO[25]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: AFSPARE1
Alternate function:
reserved.
GPIO[26]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIGNTN[4]
Alternate function: PCI Grant 4 output.
GPIO[27]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIREQN[5]
Alternate function: PCI Request 5 input or output.
GPIO[28]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: PCIGNTN[5]
Alternate function: PCI Grant 5 output.
GPIO[29]
I/O
General Purpose I/O.
This pin can be configured as a general purpose I/O pin.
Alternate function pin name: Reserved
Alternate function: Reserved.
Signal
Type
Name/Description
Table 1 Pin Description (Part 6 of 9)