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參數(shù)資料
| 型號(hào)： | SAA7372 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Digital servo processor and Compact Disc decoder CD7 |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 14 X 14 MM, 2.70 MM HEIGHT, PLASTIC, MS-022, SOT-393-1, QFP-64 |
| 文件頁數(shù)： | 19/60頁 |
| 文件大小： | 323K |
| 代理商： | SAA7372 |
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1998 Feb 26
19
Philips Semiconductors
Product specification
Digital servo processor and Compact Disc
decoder (CD7)
SAA7372
Table 7
Bit assignment
FUNCTION
BITS
DESCRIPTION
Control
0 to 3
copy of CRC checked Q-channel control bits 0 to 3; bit 2 is logic 1 when copy
permitted; bit 3 is logic 1 when recording has pre-emphasis
always zero
CD: bit 8 = logic 1, all other bits = logic 0
set by register A; 10 = level I; 00 = level II; 01 = level III
always zero
Reserved mode
Category code
Clock accuracy
Remaining
4 to 7
8 to 15
28 to 29
16 to 27 and
30 to 191
7.10
KILL circuit
The KILL circuit detects digital silence by testing for an
all-zero or all-ones data word in the left or right channel
before the digital filter. The output is switched active LOW
when silence has been detected for at least 250 ms, or if
mute is active, or in CD ROM modes. Two modes are
available which can be selected by register C:
1 pin kill: KILL active LOW indicates silence detected on
both left and right channels.
2 pin kill: KILL active LOW indicates silence detected on
left channel. V3 active LOW indicates silence detected
on right channel.
It should be noted that when mute is active or in CD ROM
modes the output(s) are switched LOW.
7.11
Audio features off
The audio features can be turned off (selected by
register E) which affects the following functions:
Digital filter, fade, peak detector, KILL circuit (but
outputs KILL, V3 still active) are disabled
V5 (if selected to be the de-emphasis flag output) and
the EBU outputs become undefined.
It should be noted that the EBU output should be set LOW
prior to switching the audio features off and after switching
audio features back on a full-scale command should be
given.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7373 | Digital servo processor and Compact Disc decoder CD7 |
| SAA7373GP | Digital servo processor and Compact Disc decoder CD7 |
| SAA7374 | Low voltage digital servo processor and Compact Disc decoder CD7LV |
| SAA7374GP | Low voltage digital servo processor and Compact Disc decoder CD7LV |
| SAA7376 | Digital servo processor and Compact Disc decoder CD7 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7373 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7 |
| SAA7373GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7 |
| SAA7374 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage digital servo processor and Compact Disc decoder CD7LV |
| SAA7374GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage digital servo processor and Compact Disc decoder CD7LV |
| SAA7376 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7 |
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