Texas Instruments Dual/Single Socket CardBus and UntraMedia Controller PCI7621 - Manual (Page 115)

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4.35 General-Purpose Output Register
The general-purpose output register is used to drive the GPO4−GPO0 outputs. See Table 4−13 for a complete
description of the register contents.
Bit 7 6 5 4 3 2 1 0
Name General-purpose output
Type R R R RW RW RW RW RW
Default 0 0 0 0 0 0 0 0
Register: General-purpose output
Offset: 8Bh
Type: Read-only, Read/Write
Default: 00h
Table 4−13. General-Purpose Output Register Description
BIT SIGNAL TYPE FUNCTION
7−5 RSVD R Reserved. These bits return 0s when read. Writes have no effect.
4 ‡ GPO4_DATA RW This bit represents the logical value of the data driven to GPO4.
3 ‡ GPO3_DATA RW This bit represents the logical value of the data driven to GPO3.
2 ‡ GPO2_DATA RW This bit represents the logical value of the data driven to GPO2.
1 ‡ GPO1_DATA RW This bit represents the logical value of the data driven to GPO1.
0 ‡ GPO0_DATA RW This bit represents the logical value of the data driven to GPO0.
‡ This bit is cleared only by the assertion of GRST.