SAA7785 Datasheet, PDF (54/68 Pages) NXP Semiconductors – ThunderBird Avenger PCI Audio Accelerator

Philips Semiconductors
ThunderBird Avenger^TM PCI Audio
Accelerator
Preliminary Specification
SAA7785
Bit
15:0
Name
SUBVEN_ID
R/W
RO
Function
Subsystem Vendor ID. The Subsystem Vendor ID register allows the manu-
facturer to uniquely identify their board since more than one board OEM may
use the SSA7785 ThunderBird Avenger™ chip. The Subsystem Vendor ID
register is loaded by an external EEPROM via the Serial Configuration Port
after reset and before any access to the PCI configuration header. The PCI
target logic should force a retry if the Subsystem Vendor ID register has not
completed loading. The Subsystem Vendor ID is read only to the PCI inter-
face. If no external EEPROM is present, then the default Subsystem Vendor
ID is 1004h, that of Philips Semiconductors (VLSI).
TABLE 46 Subsystem ID - SUBSYSID (RO)
PCI CFG 1
D15
D14
D13
D12
D11
D10
D9
D8
Offset 2Eh
SUBSYS_ID[15:8]
POR Value
0
0
0
0
0
0
1
1
D7
D6
D5
D4
D3
D2
D1
D0
SUBSYS_ID[7:0]
POR Value
0
0
0
0
0
1
0
1
Bit
15:0
Name
SUBSYS_ID
R/W
Function
RO Subsystem ID. The Subsystem ID register allows the manufacturer to
uniquely identify their board since more than one board OEM may use the
SSA7785 ThunderBird Avenger™ chip. The Subsystem ID register is loaded
by an external EEPROM via the Serial Configuration Port after reset and
before any access to the PCI configuration header. The PCI target logic
should force a retry if the Subsystem ID register has not completed loading.
The Subsystem ID is read only to the PCI interface. If no external EEPROM is
present, then the default Subsystem ID is 0305h, identical to the SSA7785
ThunderBird Avenger™ function 1 Device ID.
TABLE 47 Interrupt Line Register - INTLINE (RO)
PCI CFG 1
D7
D6
D5
D4
D3
D2
D1
D0
Offset 3Ch
INTLINE[7:0]
POR Value
0
0
0
0
0
0
0
0
1999 Nov 12
54