ALS300 Datasheet, PDF (21/66 Pages) List of Unclassifed Manufacturers – Media Audio Controller SPEC

Avance Logic Inc.
ALS300
Bit 4:
0
single cycle DMA request
1
block cycle DMA request
Bit 3:
0
block cycle DMA requset when PCM FIFO is
not full : playback
not empty: record
1
DMA requset when PCM FIFO is
less then half full during playback or
less then half empty during recording
Bit 2
0
IRQ controlled 90h command (SB16 version)
1
FIFO controlled 90h command (SBPRO version)
BIT 1
0
IRQ controled continuous DMA mode
1
FIFO controlled continuous DMA mode
CR2
Default 00h
Read/write
MISC.control
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reserved
Reserved
Reserved
Read AS 1
reserved, read as 0
Reserved
reserved, read as 0
Reserved,(read as 0)
CR3
Default 23h
Bit 7-2
Bit 1-0
Bit 6
configuration
read/write
read only
read only
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1,0
Reserved
E²PROM control (Read only)
internal/external MPU401 midi output select
Reserved
reserved
reserved
chip version number (read as 11)
Bit 1 Bit 0
0
0
ALS007SP
0
1
ALS100
1
0
ALS007/WTA2000
1
1
ALS200/ALS110//ALS120/ALS300
Power up input value
MIDIOUT,ROMCS is tri-state with internal 50K pull low resisters when power up reset.
MIDIOUT
0
external 10K pull down
21