SAA7785 Datasheet, PDF (57/68 Pages) NXP Semiconductors – ThunderBird Avenger PCI Audio Accelerator

Philips Semiconductors
ThunderBird Avenger^TM PCI Audio
Accelerator
TABLE 53 Device ID Register - DEVICE_ID (RO)
PCI CFG 2
D15
D14
D13
D12
D11
Offset 02h
DEVICE_ID[15:8]
POR Value
0
0
0
0
0
D7
D6
D5
D4
D3
DEVICE_ID[7:0]
POR Value
0
0
0
0
0
Preliminary Specification
SAA7785
D10
D9
D8
0
1
1
D2
D1
D0
1
1
0
Bit
15:0
Name
DEVICE_ID
R/W
Function
RO The Device ID for the SSA7785 ThunderBird Avenger™, function 2 is 0306h.
TABLE 54 Command Register - COMMAND (RO/RW)
PCI CFG 2
D15
D14
D13
D12
D11
D10
D9
D8
R
R
R
R
R
R
FBACK_ SERR_R
Offset 04h
ENB
ESP
POR Value
0
0
0
0
0
0
0
0
POR Value
D7
STEP-
PING
0
D6
PERR_
RESP
0
D5
SNOOP_
ENB
0
D4
MEM_
INV_EN
0
D3
SPEC_
CNTL
0
D2
MAST_
CNTL
0
D1
MEM_
CNTL
0
D0
IO_
CNTL
0
Bit
Name
15:10 R
9
FBACK_ENB
8
SERR_RESP
7
STEPPING
6
PERR_RESP
R/W
Function
RO Reserved. These bits always return zero.
RO Fast Back-to-Back Enable: the SSA7785 ThunderBird Avenger™, function 2
does not support fast back to back master cycles therefore this bit always
returns a zero.
RW System Error Response: When set to 1, the SSA7785 ThunderBird
Avenger™, function 2 responds to detected PCI bus address parity errors by
asserting SERR#. When 0, the SSA7785 ThunderBird Avenger™ ignores
these errors.
RO Address / Data Stepping: Always returns 0.
RW Parity Error Response: When set to 1, the SSA7785 ThunderBird Avenger™,
function 2 responds to detected PCI bus data parity errors by asserting
PERR#. When 0, the SSA7785 ThunderBird Avenger™ ignores PCI bus data
parity errors.
1999 Nov 12
57