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參數(shù)資料
型號: W88227QD
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: LQFP-128
文件頁數(shù): 92/116頁
文件大小: 787K
代理商: W88227QD
Preliminary/Confidential
Subject to change without notice
W88227F/W88227QD
- 88 -
1999/10/1 Rev: 0.70
APBKL/H - Audio Playback Block Register - (read/write 92h/93h)
The bit-0 of
APBKH (93h)
and bit7-0 of
APBKL (92h)
form a 9-bit counter. The value in this 9-bit counter
defines the first block to be playbacked when
APEN (90h.7)
is enabled. The value in these registers is
incremented by 1 after one block playback is finished.
93h.Bit-7: test control - should be 0
93h.Bit-6: test control - should be 0
93h.Bit-5: APACENB - Audio Playback Initial Address Counter Latch Enable
If this bit is low, the value of
WAC (08h,09h)
is loaded into internal register
APAC
. The vaule of
APAC
minus 12 is the starting address of audio playback.
93h.Bit-4: test control - should be 0
APWCL/H - Audio Playback Word Count Register - (read/write 94h/95h)
The number in this counter plus one is the word count to be playbacked for each memory block. The default
value of these registers is
0497
h after chip reset, host reset and firmware reset. No need to change this value
for normal usage.
APVOL - Audio Playback Volume Register - (write 96h)
Bit 7-4: LVOL[3:0] - Left Channel Volume Control
Bit 3:0: RVOL[3:0] - Right Channel Volume Control
LVOL3-0/RVOL3-0
Fh ~ Ch
Bh
Ah
9h
8h ~ 5h
4h
3h
2h
1h
0h
Binary Number
FFh
80h
40h
20h
10h
08h
04h
02h
01h
00h
Attenuation (dB)
0 (On)
-6.00
-12.0
-18.0
-24.0
-30.0
-36.0
-42.1
-48.0
Mute (Off)
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