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參數(shù)資料
| 型號(hào)： | W88227QD |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類(lèi)： | 消費(fèi)家電 |
| 英文描述： | ATAPI CD-ROM Decoder(支持ATAPI標(biāo)準(zhǔn)的CD-ROM解碼器) |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP128 |
| 封裝： | LQFP-128 |
| 文件頁(yè)數(shù)： | 93/116頁(yè) |
| 文件大?。?/td> | 787K |
| 代理商： | W88227QD |
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Preliminary/Confidential
Subject to change without notice
W88227F/W88227QD
- 89 -
1999/10/1 Rev: 0.70
APACK - Audio Playback Interrupt Acknowledge - (write 97h)
Writing any value to this register deactivates flag
APIb (01h.r2)
and its corresponding interrupt.
PUCTL - Pull Up Resistor Control Register - (write 98h)
This register is used to control the utilization of two pull-up resistors on IO cells. Default value is 0.
Bit 7-6: HIP[1:0] - Host Interface Pull-up Control
Setting these two bits low control two pull-up resistors of host interface I/O cells respectively. If these
two bits are both high, no pull-up resistors exist. Note that DD7 is controlled by
DD7UPB (98h.1)
separately,
Bit 5-4: UIP[1:0] - Microprocessor Interface Pull-up Control
Setting these two bits low control two pull-up resistors of uP interface I/O cells respectively. If these
two bits are both high, no pull-up resistors exist.
Bit 3-2: RIP[1:0] - RAM Interface Pull-up Control
Setting these two bits low control two pull-up resistors of RAM interface I/O cells respectively. If
these two bits are both high, no pull-up resistors exist.
Bit 1:
DD7UPB - DD7 Pull-up Enable
Setting this bit low enable the internal pull-up resister on the
pin DD7
.
APIPB - Audio Playback Interface Pull-up Control
Bit 0:
Setting this bit low enable the internal pull-up of the audio-playback output pin, including ALRCK,
ABCK and ASD.
SICTL - Sink Current Control Register - (write 99h) - obsolete
BICCTL - Buffer Independent Correction Control Register - (read/write 9Ah)
This register is 0 after chip reset, host reset and firmware reset.
Bit 7:
BICEN - Buffer Independent Correction Enable
If this bit is high, the buffer-independent-correction (BIC mode) is enabled. Otherwise, the real-time-
correction (RTC mode) is enabled.
Bit 6:
ATMSEN - Automatic Mode Switch
If this bit is high, the decoder automatically change from Disk-Monitor Mode to the pre-set Buffer-
Mode after the target is found.
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