SAA7785 Datasheet, PDF (39/68 Pages) NXP Semiconductors – ThunderBird Avenger PCI Audio Accelerator

Philips Semiconductors
ThunderBird Avenger^TM PCI Audio
Accelerator
Preliminary Specification
SAA7785
Bit
6
Name
START
5:4 R
3:0 CODE
R/W
RO
RO
RO
Function
If BIST capable, this bit will start the BIST. Writing a 1 will start the test and
the BIST should write this bit to a zero when complete. Software should fail
the device if the BIST is not complete after 2 seconds.
Reserved. These bits always return zero.
Completion Code. A value of zero means the device has passed its test.
Non-zero values means the device has failed using device specific failure
codes.
SSA7785 ThunderBird Avenger™ CFG Space 0 Non-Legacy Base Address Registers
The Thunderbird Base Address Register (SONGBASE) is used to I/O map all of the non-legacy I/O devices in the
SSA7785 ThunderBird Avenger™ chip. The SONGBASE register maps the two DMA channels, the AC Link registers,
the Host/DSP interface, the Serial Port interfaces, and the Multimedia Timer. The offset index for each of the devices
are shown below: SSA7785 ThunderBird Avenger™ Non-Legacy I/O Device Map
Device Name
Multimedia Timer
Serial Ports
Host/DSP Interface
AC Link Interface
Serial IRQ
Thunderbird Reserved
Byte 3
Byte 2
Byte 1
Byte 0
TMCOUNT2
TMCOUNT1
TMCOUNT0
TMSTAT
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
HDPCTL
HDDATA
HDDLA
HDPSTT
Reserved
HDDLD
Reserved
Reserved
ACDATA
ACADDR
ACSTAT
ACCTRL
ACPCML
ACPCMR
Reserved
Reserved
Reserved
IRQCTL
Reserved
Offset
00h
04h
08h
0Ch
10h
14h
18h
1Ch
20h
24h
28h
2Ch
30h
34h
38h
3Ch
40h
44-7Fh
TABLE 20 ThunderBird Base Address Register - Songbase (RW/RO)
PCI CFG 0
D31
D30
D29
D28
D27
D26
D25
D24
Offset 10h
SONGBASE[31:24]
POR Value
0
0
0
0
0
0
0
0
1999 Nov 12
39