Texas Instruments Dual/Single Socket CardBus and UntraMedia Controller PCI7621 - Manual (Page 114)

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4.33 General-Purpose Event Enable Register
The general-purpose event enable register contains bits that are set to enable GPE signals. See Table 4−11 for a
complete description of the register contents.
Bit 7 6 5 4 3 2 1 0
Name General-purpose event enable
Type RW RW R RW RW RW RW RW
Default 0 0 0 0 0 0 0 0
Register: General-purpose event enable
Offset: 89h
Type: Read-only, Read/Write
Default: 00h
Table 4−11. General-Purpose Event Enable Register Description
BIT SIGNAL TYPE FUNCTION
7 ‡ PWR_EN RW Power change GPE enable. When this bit is set, GPE is signaled on PWR_STS events.
6 ‡ VPP12_EN RW 12-V VPP GPE enable. When this bit is set, GPE is signaled on VPP12_STS events.
5 RSVD R Reserved. This bit returns 0 when read. A write has no effect.
4 ‡ GP4_EN RW GPI4 GPE enable. When this bit is set, GPE is signaled on GP4_STS events.
3 ‡ GP3_EN RW GPI3 GPE enable. When this bit is set, GPE is signaled on GP3_STS events.
2 ‡ GP2_EN RW GPI2 GPE enable. When this bit is set, GPE is signaled on GP2_STS events.
1 ‡ GP1_EN RW GPI1 GPE enable. When this bit is set, GPE is signaled on GP1_STS events.
0 ‡ GP0_EN RW GPI0 GPE enable. When this bit is set, GPE is signaled on GP0_STS events.
‡ This bit is cleared only by the assertion of GRST.
4.34 General-Purpose Input Register
The general-purpose input register contains the logical value of the data input to the GPI terminals. See Table 4−12
for a complete description of the register contents.
Bit 7 6 5 4 3 2 1 0
Name General-purpose input
Type R R R RU RU RU RU RU
Default 0 0 0 X X X X X
Register: General-purpose input
Offset: 8Ah
Type: Read/Update, Read-only
Default: XXh
Table 4−12. General-Purpose Input Register Description
BIT SIGNAL TYPE FUNCTION
7−5 RSVD R Reserved. These bits return 0s when read. Writes have no effect.
4 GPI4_DATA RU GPI4 data input. This bit represents the logical value of the data input from GPI4.
3 GPI3_DATA RU GPI3 data input. This bit represents the logical value of the data input from GPI3.
2 GPI2_DATA RU GPI2 data input. This bit represents the logical value of the data input from GPI2.
1 GPI1_DATA RU GPI1 data input. This bit represents the logical value of the data input from GPI1.
0 GPI0_DATA RU GPI0 data input. This bit represents the logical value of the data input from GPI0.