參數(shù)資料
型號(hào)： SAA7785
廠商： NXP Semiconductors N.V.
英文描述： ThunderBird Avenger（TM） PCI Audio Accelerator(雷鳥(niǎo)Avenger（TM）PCI音頻加速器)
中文描述： 雷鳥(niǎo)復(fù)仇者（商標(biāo)）的PCI音頻加速器（雷鳥(niǎo)復(fù)仇者（商標(biāo)）的PCI音頻加速器）
文件頁(yè)數(shù)： 35/68頁(yè)
文件大小： 1303K
代理商： SAA7785
ThunderBird Avenger
TM
PCI Audio
Accelerator
SAA7785
Philips Semiconductors
Preliminary Specification
1999
Nov 12
35
TABLE 13
Status Register - Status (RO/RW)
9
FBACK_ENB
RO
Fast Back-to-Back Enable: the SSA7785 ThunderBird Avenger, function 0
does not support fast back to back master cycles therefore this bit always
returns a zero.
8
SERR_RESP
RW
System Error Response: When set to 1, the SSA7785 ThunderBird
Avenger, function 0 responds to detected PCI bus address parity errors by
asserting SERR#. When 0, the SSA7785 ThunderBird Avenger ignores
these errors.
7
STEPPING
RO
Address / Data Stepping: Always returns 0.
6
PERR_RESP
RW
Parity Error Response: When set to 1, the SSA7785 ThunderBird Avenger,
function 0 responds to detected PCI bus data parity errors by asserting
PERR#. When 0, the SSA7785 ThunderBird Avenger ignores PCI bus data
parity errors.
5
SNOOP_ENB
RO
VGA Snoop Enable. The SSA7785 ThunderBird Avenger, function 0 does
not support VGA snoop enable, therefore this bit always returns a zero.
4
MEM_INV_EN
RO
Memory Write and Invalidate Enable: Always returns 0.
3
SPEC_CNTL
RO
Special Cycle Control: Controls the devices ability to respond to Special
Cycle Operations. A value of 0 causes the SSA7785 ThunderBird Avenger,
function 0 to ignore all Special Cycles.
2
MAST_CNTL
RW
Master Control: Controls the devices ability to act as a master on the PCI bus.
A value of 0 disables the ability of the SSA7785 ThunderBird Avenger,
function 0, to act as a primary PCI master. A value of 1 enables the Thunder-
Bird Q3DIII, function 0 to become a PCI bus master.
1
MEM_CNTL
RO
Memory Response Control: The SSA7785 ThunderBird Avenger, function 0
does not support target memory cycles therefore this bit always returns a
zero.
0
IO_CNTL
RW
I/O Response Control: Controls the SSA7785 ThunderBird Avenger, func-
tion 0’s response to I/O space. A value of 0 disables the device response. A
value of 1 allows the device to respond to I/O space accesses.
PCI CFG 0
D15
D14
D13
D12
D11
D10
D9
D8
Offset 06h
R_PERR
S_SERR
SM_
ABORT
RT_
ABORT
ST_
ABORT
DEVSEL_TMG
S_PERR
POR Value
0
0
0
0
0
0
1
0
D7
D6
D5
D4
D3
D2
D1
D0
F_
BK2BK
UDF
MHz66
R
R
R
R
R
POR Value
1
0
0
0
0
0
0
0
Bit
Name
R/W
Function
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