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參數資料
| 型號： | W88111AF |
| 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： | 53/64頁 |
| 文件大小： | 466K |
| 代理商： | W88111AF |
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W88111AF/W88112F
Preliminary/Confidential
ATAPI CD-ROM Decoder & Controller
This specification is subject to change without notice.
Publication Release Date: Aug, 1996
Preliminary/ Confidential Revision A0.1
- 53 -
Bit 1: TNFI - Target Not Found Interrupt
This bit, if enabled by TNFEN (80h.1), becomes high and activates DECIb (01h.5) if the headers
of incoming data do not match the target after
N
successive sector comparisons.
N
is the number
specified by Target-Search-Limit-Register (83h). This interrupt also deactivates DECEN (0AH.7)
and stops the decoder automatically. Flag TNFI is deactivated by reading register TARSTA (80h).
Bit 0: HCEI - Header Compare Error Interrupt
After target is found, the number in Target-Header-Register (84h-86h) will automatically increase
after decoding of its corresponding sector is finished. Once the headers of following sector do not
match the updated target, flag HCEI becomes high and activates DECIb (01h.5) if HCEEN (80h.0)
is enabled. This error condition also deactivates DECEN (0AH.7) and stops the decoder
automatically. Flag HCEI is deactivated by reading register TARSTA (80h).
DSTH/DSTL - Decoding Sector Threshold Register - (write 82h/81h)
If both TARGEN(80h.7) and DSCEN (80h.6) are enabled, this register specified the threshold number
of successive sectors minus one to be decoded after header is targeted. The comparison result of
this threshold number with the number in Decoding-Sector-Counter is used to disable the decoding
function. The initial value of DSTH/DSTL is FF,FFh after chip reset, firmware reset and decoder
reset. Note that threshold value should not be set as 00h.
DSCH/DSCL - Decoding Sector Counter - (read 82h/81h)
If both TARGEN(80h.7) and DSCEN (80h.6) are enabled, the value in Decoding-Sector-Counter is
cleared to 00,00h when DECEN (0Ah.7) changes from 0 to 1. Once the target header is found, this
counter increases by one after the decoding of a sector is finished. The decoder will stop and
deactivate DECEN (0Ah.7) when the value in Decoding-Sector-Counter reach the threshold value
specified by Decoding-Sector-Threshold-Register.
TSL - Target Search Limit Register - (write 83h)
This register specified the limited number of target search cycle. If
N
is the number specified by this
register, flag TNFI (80h.1) becomes high if the headers of incoming data do not match the target after
N
successive sectors. Since this value is not changed by closing decoder, there is no need to write it
every time before enabling the decoder. The initial value of TSL after chip reset, firmware reset and
decoder reset is FFh.
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PDF描述 |
|---|---|
| W88112F | ATAPI CD-ROM DECODER & CONTROLLER |
| W88113C | ATAPI CD-ROM DECODER & CONTROLLER |
| W88113CD | ATAPI CD-ROM DECODER & CONTROLLER |
| W88113CF | ATAPI CD-ROM DECODER & CONTROLLER |
| W88227F | ATAPI CD-ROM Decoder(支持ATAPI標準的CD-ROM解碼器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W88112F | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ATAPI CD-ROM DECODER & CONTROLLER |
| W88113C | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ATAPI CD-ROM DECODER & CONTROLLER |
| W88113CD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ATAPI CD-ROM DECODER & CONTROLLER |
| W88113CF | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ATAPI CD-ROM DECODER & CONTROLLER |
| W88611P | 制造商:WINBOND 制造商全稱:Winbond 功能描述:VCD 4X RF AMP/DIGITAL SERVO & DSP |
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