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參數資料
型號: W88113CF
廠商: WINBOND ELECTRONICS CORP
元件分類: 存儲控制器/管理單元
英文描述: ATAPI CD-ROM DECODER & CONTROLLER
中文描述: IDE COMPATIBLE, CD ROM CONTROLLER, PQFP100
封裝: PLASTIC, QFP-100
文件頁數: 31/102頁
文件大小: 573K
代理商: W88113CF
W88113C
Publication Release Date: Mar. 1999
- 27 - Revision 0.61
Bit 0:
DISAI - Disable Auto-Increment of Microprocessor-RAM Address Counter
When this bit is high, the automatic increment of the
RAC (2Dh/1Dh/1Ch)
address counter is
disabled. Note that DISAI should be 0 before
RFTRG (2Ah.w6)
is triggered.
SUBH0 to SUBH3 - Subheader Registers - (read 14h to 17h)
These registers are used to hold the information of subheader bytes. If
BUFEN (0Ah.w2)
is disabled,
subheader bytes are latched from incoming serial data. If
BUFEN (0Ah.w2)
is enabled, subheader
bytes are retrieved from the external RAM.
ASTRG - Automatic Sequence Trigger Register (write 17h)
The following bits will clear themselves after the triggered operation are completed.
Bit 7:
Reserved
Bit 6:
CSRT - Clear Soft Reset Trigger
Setting this bit high clears bit SRST in the ATAPI Device Control Register.
Bit 5:
DSCT - Disk Seek Complete Trigger
If
ABYEN (18h.1)
is high, setting
DSCT
high triggers the following operations:
Set BSY
DSC (37h.4)
1
Clear BSY
If
ABYEN (18h.1)
is low, setting
DSCT
high sets DSC(37h.4) to 1.
Bit 4:
SIGT - ATAPI Signature Trigger
Setting this bit high initialize the Task Registers with ATAPI signature.
ATFEA (31h)
00h
ATERR (31h)
01h
ATINT (32h)
01h
ATSPA (33h)
01h
ATBLO (34h)
14h
ATBHI (35h)
EBh
ATSTA (37h)
x00x0000b
Note that register ATDRS (36h) is not cleared by triggering SIGT to abide by the ATAPI protocol.
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