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參數資料
型號: W88227F
廠商: WINBOND ELECTRONICS CORP
元件分類: 消費家電
英文描述: ATAPI CD-ROM Decoder(支持ATAPI標準的CD-ROM解碼器)
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP128
封裝: PLASTIC, QFP-128
文件頁數: 49/116頁
文件大?。?/td> 787K
代理商: W88227F
Preliminary/Confidential
Subject to change without notice
W88227F/W88227QD
- 45 -
1999/10/1 Rev: 0.70
Status Flag
SIEN
(0Bh.7)
x
SDEN
(0Bh.6)
1
Internal Operation
ILSYN(0Ch.6)
re-synchronize internal sync logic
NOSYN(0Ch.5)
1
x
internal sync logic provide internal sector boundary
LBKF(0Ch.4)
0
x
internal sync logic do not provide internal sector
boundary
SBKF(0Ch.2)
x
0
do not re-synchronize internal sync logic
Bit 1:
Bit 0:
reserved
UEBK - Uncorrectable Errors in Block
This bit is used to indicate that at least one data is corrected in the latest available data block.
STAT1 - Status Register 1 - (read 0Dh)
Bit 7-5: BI[2:0] - Raw Block Indicator
Bit 4:
HDERA - Header Erasure
This bit is high if there is at least one erasure flag detected in header bytes excluding mode byte.
Erasure in mode byte will cause
RMOD (0Eh.r7-4)
all become high.
SHDERA - Subheader Erasure
Bit 0:
This bit is high if erasure flags are detected for both bytes in at least one subheader byte-pairs.
Erasures are latched from pin C2PO it
BUFEN (0Ah.w2)
is disabled. Otherwise, header and subheader
bytes are retrieved from external RAM while the following sector is being buffered.
DHTACK - DRAM to Host Transfer Acknowledge - (write 0Eh)
Writing DHTACK, regardless of what data is written, deactivates
TENDb (01h.r6)
that caused by data-in
transfer.
STAT2 - Status Register 2 - (read 0Eh)
Bit 7-4: RMOD[3:0] - Raw Mode Bit
RMOD2-0 are directly latched from bit 2-0 from the 4th header byte and RMOD3 is high if any one of
the other 5 bits in the mode byte is high. RMOD3 is also high if a mode byte erasure is detected.
Bit 3:
MODE2 - Mode 2 Selected Flag
This bit reflects the setting of
M2RQ (0Bh.w3)
.
相關PDF資料
PDF描述
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