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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： 98/102頁
文件大?。?/td> 573K
代理商： W88113CF
W88113C
Publication Release Date: Mar. 1999
- 94 - Revision 0.61
5.5 Audio-playback
5.5.1 Configuration Phase
1. Configure input/output pin for Audio-playback through
APCNF (90h).
- Bit 6: Audio Playback Interrupt Enable
- Bit 4: Audio Reference Clock Select
- Bit 3,2: Audio Input Reference Clock Setting
- Bit 1:0: Audio Data Output Setting
2. Select Audio-playback output format through
APFMT (91h).
After configuration, the
pins ABCK (6)
becomes active but data pin keep "mute."
5.5.2 Playback Phase
If the desired data sectors are buffered in DRAM, the following steps can trigger audio playback:
1. Set Audio-playback start block through
APBKH/L (93h/92h).
2. Enable Audio-playback by setting
APEN (90h.7)
high.
3. Wait for interrupt or polling flag
APIb (01h.r2).
4. If
APIEN (90h.6)
is enabled, write
APACK (97h,w)
to deactivate audio-playback-interrupt.
5. If buffer is not empty or end of command, go to step 3.
6. Disable Audio-playback by setting
APEN (90h.7)
low.
The status of playback is directly controlled by the setting of
APEN (90h.7).
So the buffer should be
carefully managed to prevent noise or broken song.
5.5.3 IEC-958 Digital Audio Output
The digital output function complies with the IEC-958 standard. This function is automatically
enabled after configuration of audio playback function.
DA0EN
(87h.7)
HSTS1-0
(2Fh.w5-4)
ARST1-0
(2Fh.w3-2)
Digital Audio Output Pin
1
xxb
xxb
pin URS (32)
default
x
01b
xxb
pin HRSTb (21)
x
xxb
01b
pin ARSTb (60)
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相關代理商/技術參數
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