SAA7785 Datasheet, PDF (40/68 Pages) NXP Semiconductors – ThunderBird Avenger PCI Audio Accelerator

Philips Semiconductors
ThunderBird Avenger^TM PCI Audio
Accelerator
Preliminary Specification
SAA7785
D23
D22
D21
D20
D19
D18
D17
D16
SONGBASE[23:16]
POR Value
0
0
0
0
0
0
0
0
D15
D14
D13
D12
D11
D10
D9
D8
SONGBASE[15:8]
POR Value
0
0
0
0
0
0
0
0
D7
D6
D5
D4
D3
D2
D1
D0
SONG
R
R
R
R
R
R
IO
BASE[7]
POR Value
0
0
0
0
0
0
0
1
Bit
31:7
Name
SONGBASE
6:1 R
0
IO
R/W
RW
RO
RO
Function
Thunderbird non-legacy device base address register. This register supplies
the I/O base address for the non-legacy I/O devices within the SSA7785
ThunderBird Avenger™ chip.
Reserved. These bits are reserved a must always return a zero for plug and
play.
I/O flag. This read only bit indicates that this is an I/O range.
SSA7785 ThunderBird Avenger™ CFG Space 0 Legacy Base Address Registers
The SSA7785 ThunderBird Avenger™ contains three legacy I/O base registers in configuration space 0. These legacy
devices are the Sound Blaster register, the AdLib registers and the MIDI interface registers. They are described in detail
in the next three tables.
TABLE 21 Sound Blaster Base Address- SBBASE (RW/RO)
PCI CFG 0
D31
D30
D29
D28
D27
D26
D25
D24
Offset 14h
SBBASE[31:24]
POR Value
0
0
0
0
0
0
0
0
D23
D22
D21
D20
D19
D18
D17
D16
SBBASE[23:16]
POR Value
0
0
0
0
0
0
0
0
1999 Nov 12
40