參數(shù)資料
型號(hào)： SAA7374GP
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 消費(fèi)家電
英文描述： Low voltage digital servo processor and Compact Disc decoder CD7LV
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(yè)數(shù)： 18/60頁(yè)
文件大小： 324K
代理商： SAA7374GP
1998 Feb 26
18
Philips Semiconductors
Product specification
Low voltage digital servo processor and
Compact Disc decoder (CD7LV)
SAA7374
7.9
EBU interface
The bi-phase mark digital output signal at pin DOBM is in
accordance with the format defined by the IEC958
specification. Three different modes can be selected via
register A;
DOBM pin held LOW.
Data taken before concealment, mute and fade (must
always be used for CD-ROM modes).
Data taken after concealment, mute and fade.
7.9.1
F
ORMAT
The digital audio output consists of 32-bit words
(‘subframes’) transmitted in bi-phase mark code (two
transitions for a logic 1 and one transition for a logic 0).
Words are transmitted in blocks of 384.Table 5 gives the
formats.
Table 5
Format
Table 6
Description of Table 5
FUNCTION
BITS
DESCRIPTION
Sync
Auxiliary
Error flags
Audio sample
Validity flag
User data
Channel status
Parity bit
0 to 3
4 to 7
4
8 to 27
28
29
30
31
not used; normally zero
CFLG error and interpolation flags when selected by register A
first 4 bits not used (always zero). 2’s compliment. LSB = bit 12, MSB = bit 27
valid = logic 0
used for subcode data (Q-to-W)
control bits and category code
even parity for bits 4 to 30
FUNCTION
DESCRIPTION
Sync
The sync word is formed by violation of the bi-phase rule and therefore does not contain any data.
Its length is equivalent to 4 data bits. The 3 different sync patterns indicate the following situations:
sync B: start of a block (384 words), word contains left sample; sync M: word contains left sample
(no block start) and sync W: word contains right sample.
Left and right samples are transmitted alternately.
Audio samples are flagged (bit 28 = 1) if an error has been detected but was uncorrectable. This
flag remains the same even if data is taken after concealment.
Subcode bits Q-to-W from the subcode section are transmitted via the user data bit. This data is
asynchronous with the block rate.
The channel status bit is the same for left and right words. Therefore a block of 384 words contains
192 channel status bits. The category code is always CD. The bit assignment is given in Table 7.
Audio sample
Validity flag
User data
Channel status
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA7376 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7
SAA7377 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7
SAA7377GP 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital servo processor and Compact Disc decoder CD7
SAA7377GP/M1,518 功能描述:IC DIGITAL PROCESSOR/CD7 64QFP RoHS:是 類(lèi)別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類(lèi)型:調(diào)諧器 應(yīng)用:移動(dòng)電話(huà)，手機(jī)，視頻顯示器 安裝類(lèi)型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱(chēng):SP000365064
SAA7378GP 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Single Chip Digital Servo Processor and Compact Disc Decoder
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