AMD-766 Datasheet, PDF (71/96 Pages) Advanced Micro Devices – Peripheral Bus Controller

23167B – March 2001
Preliminary Information
AMD-766^TM Peripheral Bus Controller Data Sheet
PM16: Resume Event Enable Register
IO mapped (base pointer: C3A58); offset: 17-16h. Default: 0000h. Read-write.
For these bits, 1=Enable the specified event to resume the system out C2, C3, or POS.
15
14
13
12
11
10
9
8
Reserved RI_RSM Reserved Reserved Reserved SIT_RSM RTC_RSM IRQ_RSM
7
6
5
4
3
2
1
0
USB_RSM SLPB_RSM SMBA_RSM HSLV_RSM SNP_RSM EXT_RSM PME_RSM PB_RSM
PB_RSM. Resume on PM00[PWRBTN_STS]=1.
PME_RSM. Resume on PM20[PME_STS]=1.
EXT_RSM. Resume on PM20[EXTSMI_STS]=1.
SNP_RSM. Resume PME0[SNP_STS]=1.
HSLV_RSM. Resume on PME0[HSLV_STS]=1.
SMBA_RSM. Resume on PME0[SMBA_STS]=1.
SLPB_RSM. Resume on PM00[SLPBTN_STS]=1.
USB_RSM. Resume on PM20[USB_RSM_STS]=1.
IRQ_RSM. Resume on assertion of an unmasked IRQ (when INTR to the processor is set). Note: IRQ0, the timer
tick interrupt, may be masked from generating these resume events via C3A50[PITRSM#].
RTC_RSM. Resume on PM00[RTC_STS]=1.
SIT_RSM. Resume on PM20[SIT_STS]=1.
RI_RSM. Resume on PM20[RI_STS]=1.
PM18: Flag Write Register
IO mapped (base pointer: C3A58); offset: 19-18h. Default: 0000h. Read-write.
15:0
FWRDATA
FWRDATA. Flag write data. Writes to this register are routed to the ISA bus with the FLAGWR pin asserted. The
SA and SD ISA bus pins are guaranteed to be valid at least 30 nanoseconds before and 20 nanoseconds after
FLAGWR is asserted. Reads provide the last data written to this register (internally latched). PM18 and PM1A
should not be read in a single cycle; the two registers are required to be read separately. To use the FLAGWR pin,
PMCA is required to be configured as the FLAGWR function.
PM1A: Flag Read Register
IO mapped (base pointer: C3A58); offset: 1B-1Ah. Default: 0000h. Read only.
15:0
FRDDATA
FRDDATA. Flag read data. Reads from this register are routed to the ISA bus with the FLAGRD# pin asserted.
FLAGRD# is asserted with the same timing as IOR# for these cycles. PM18 and PM1A should not be read in a
single cycle; the two registers are required to be read separately. To use the FLAGRD# pin, PMCB is required to be
configured as the FLAGRD# function.
PM1E (PM2F): Software SMI Trigger Register
IO mapped (base pointer: C3A58); offset: 1Eh. Default: 00h. Read-write. This address accesses the same physical
register located at PM2F (i.e., both accesses to PM1E and PM2F identically access the same register and both may be
used to set PM28[SWI_STS]).
71