Technical information

7-24
AIC-6915 Ethernet LAN Controller Programmer’s Manual
PME Event Register
Type: R/W
Internal Registers Subgroup: Ethernet Functional Registers
Byte Address: 58h- 5Bh
Serial EEPROMControlStatus Register
Type: R/W
Internal Registers Subgroup: PCI Functional Registers
Byte Address: 60h - 63h
Table 7-33. PME Event Register
Bit(s) rw
Reset
Value Description/Function
31:6 r 0
Reserved:
Always read 0.
5r/w0
ExtPhyReset:
This bit controls the
P
HY
R
ESET
pin directly. Setting
E
XT
P
HY
R
ESET
is the only way to assert the external pin.
4r0
LinkFailStatus:
Indicates there is a link fail. This bit is connected
directly to the
L
INK
F
AIL
pin in GPIO bit 0.
3r/w0
LinkFailEn:
Setting this bit indicates that GPIO bit 0 input mode is
used for a Link Fail event. Clearing the bit disables Link Fail from
generating
PME_
.
2r/w0
LinkFailLowActive:
Clearing this bit indicates that GPIO bit 0 is
active high at input mode as a Link Fail indicator. Setting the bit
indicates the GPIO bit 0 is active low.
1r0
LinkFailEvt:
Indicates a link fail event. PME_ is asserted. This bit is
cleared when the
PME_S
TATUS
bit is cleared.
0r0
WakeupEvt:
Indicates a wake-up event from the receive module.
PME_
is asserted. This bit is cleared when
PME_S
TATUS
bit is
cleared.
Table 7-34. EEPROMControlStatus Register
Bit(s) rw
Reset
Value Description/Function
31:4 r 0
Reserved:
Always read as 0.
3r0
InitDone
: If the board is set up to read the EEPROM after a hard-
reset, this bit indicates when the initial reading of the EEPROM is
finished. If the board is set up not to read EEPROM after a hard-
reset, this bit is cleared.
2r0
Idle
: This is the idle
STATUS
bit indicating the serial EEPROM state
machine is busy or idle.
1r/w0
WriteEnable:
When this bit is set, it triggers the serial EEPROM
interface to issue a ‘Write Enable’ command. When the command is
completed the bit is cleared.
0r/w0
WriteDisable
: When this bit is set, it triggers the serial EEPROM
interface to issue a ‘Write Disable’ command. When the command is
completed the bit is cleared.