ALS300 Datasheet, PDF (26/66 Pages) List of Unclassifed Manufacturers – Media Audio Controller SPEC

Avance Logic Inc.
ALS300
7:1
0
PNP3-31
Bit
7:2
1
0
PNP3-60
Bit
7:2
1:0
PNP3-61
Bit
7:4
3:0
PNP3-70
Bit
7:4
3:0
PNP3-71
Bit
7:0
Reserved , read as 0
R/W Device 1 control, 0 : Disable 1 : Enable
Default : 00h IO check control
Type
Function
Reserved , read as 0
R/W IO range check control, 0 : Disable 1 : Enable
R/W IO range check return data 0 : 0xaa 1 : 0x55
Default : 00h Device 3 Base address high byte
Type
Function
Reserved, read as 0
R/W MPUBASE[9..8]
Default : 00h Device 3 Base address low byte
Type
Function
R/W MPUBASE[7..4]
Reserved, read as 0
Default : 00h Device 3 IRQ select
Type
Function
Reserved , read as 0
R/W MPU401 IRQ
Default : 02h Device 3 IRQ type
Type
Function
R Read as 02h
All other plug and play registers not specified are read only as 0 except 74h,75h which should
return 04h.
CRC-32 for FIFO check :
ALS300 build-in CRC-32 check circuit for speed up testing. It can help verification
in development stage. To start CRC check, toggle CR3A.2 1 time. The clock of CRC-32
shift register is the clock of SB primary FIFO. When CPU read CR3B~3E,ALS300 return
CRC-32 shift register content to CPU.
EXTERNAL SERIAL E²PROM ACCESS:
EXTERNAL SERIAL E²PROM IS ENABLED WHEN CR3.6 = 1.
ALS300 ONLY SUPPORTS NS9346 SERIES (OR COMPATIBLE CLONE UNIT) SERIAL E²PROM WHICH HAS THE
FOLLOWING PHYSICAL STORAGE ORGANIZATION:
64 X 16 (1024 BITS, 64 STORAGE CELL, EACH 16 BITS WIDE,Little endian)
IF THE EXTERNAL SERIAL E²PROM IS ENABLED, ALS300WILL READ THE FOLLOWING DATA FROM
EXTERNAL E²PROM WHEN ALS120 IS RESET (H/W RESET).
PCI Subsystem Vendor ID
BYTE 0-1
PCI Subsystem ID
BYTE 2-3
PNP HEADER
BYTE 4-12
PNP VERSION
BYTE 13-15
IDENTIFIER STRING
BYTE 16-59
RESOURCE CHECKSUM 00 BYTE 60 (CR3.4=0,CR3.3=0)
THE ORIGNAL PNP HEADER,IDENTIFIER STRING AND RESOURCE CHECKSUM WILL BE UPDATED
BY THE ABOVE DATA. THEIR DEFAULT VALUE ARE LISTED IN “PLUG AND PLAY HEADER/RESOURCE
DATA”.
ALS300 WILL NOT READ E²PROM EXCEPT ALS300 IS RESET AGAIN.
After reading PCI subsystem Vendor ID/subsystem ID (byte 0~3), ALS300 “SB logic” send these data to ALS300
“PCI interface”.
Test Mode Access:
Access GCR90 will enter the test mode you set.
Power Management:
Try the best power management for both active and inactive stage of ALS300 for notebook application.
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