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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: 32/102頁
文件大小: 573K
代理商: W88113CF
W88113C
Publication Release Date: Mar. 1999
- 28 - Revision 0.61
Bit 3:
CPFT - Clear Packet FIFO Trigger
Setting this bit high clears the Packet FIFO.
ADTT - Automatic Data Transfer Trigger
If
PIO (1Fh.2)
is high, setting ADTT high triggers the following PIO Data Transfer sequence:
Set BSY
DTEN (01h.w2)
1
SCoD (20h.2)
0 if
DINB (1Fh.1)
is 0; otherwise, 1
ATINT (32h)
02h if
DINB (1Fh.1)
is 0; otherwise, 00h
If
STWCEN (18h.w3)
is enabled, then ATBHI/LO
(TWCH/L + 1) 2
The data transfer logic will start to fill the Data FIFO automatically. The following sequence
will be executed when
DFRDYb (01h.r1)
become active-low:
DRQ (37h.3)
1
Clear BSY
HIRQ (2Eh.3)
1
After detecting the interrupt, the host will check the status and then read the data.
STWCEN (18h.3)
should not be used for Automatic Multiple Block Transfer. Instead, ATBLO,
ATBHI should be set by firmware to:
(MBC + 1) ((TWC + 1) 2)
If
PIO (1Fh.2)
is low, setting ADRTG high triggers the following DMA Data Read sequence:
Set BSY
DTEN (01h.w1)
1
SCoD (20h.2)
0 if
DINB (1Fh.1)
is 0; otherwise, 1
ATINT (32h)
02h if
DINB (1Fh.1)
is 0; otherwise, 00h
DRQT - DRQ Trigger
If bit PIO (1Fh.2) is high, setting this bit high triggers the following hardware sequence:
DRQ (37h.3)
1
BSY
0
HIRQ (2Eh.3)
1
When bit PIO is low (DMA mode), this bit should not be triggered.
SCT - Status Completion Trigger
Setting this bit high triggers the following hardware sequence:
CHECK (37h.0)
ACHECK (3Eh.0)
CORR (37h.2)
ACORR (3Eh.2)
DRDY (37h.6)
ADRDY (3EH.6)
ATINT (32h)
03h
Bit 2:
Bit 1:
Bit 0:
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