參數(shù)資料
型號: SAA7381
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: ATAPI CD-R block decoder
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP144
文件頁數(shù): 20/108頁
文件大?。?/td> 380K
代理商: SAA7381
1997 Aug 12
20
Philips Semiconductors
Objective specification
ATAPI CD-R block decoder
SAA7381
Table 17
Description of the CTRL0 register bits (resetting the chip sets all the bits in this register to 0)
Table 18
Description of the CTRL1 register bits (the reset function clears all the flags in this register)
BIT
NAME
VALUE
DESCRIPTION
7
decen
0
disable decoding, drive in ‘full reset’ state, no monitor of I
2
S-bus line, no
interrupts
enable decoding
obsolete
must be set to logic 1
disable error correction of bytes for which an error has been detected, but not
yet corrected
enable CRC miscorrection correction of the C2 flag bytes
disable automatic Form detection
enable automatic Form detection
disable erasure flag use
enable erasure flag use
disable data writes to the buffer and pointer updates, only header and status
information recovered
enables data writes to the buffer and pointer updates
disable ECC correction only EDC checking
enable ECC correction, ERCO active
must be set to logic 0
1
0
1
0
6
ahead
5
e01rq
1
0
1
0
1
0
4
autoform
3
eramrq
2
wrreq
1
0
1
0
1
1
eccrq
0
encode
BIT
NAME
VALUE
DESCRIPTION
7
syien
0
1
0
1
0
1
0
1
0
1
disable sync interpolation
enable sync interpolation
disable sync detection
enable sync detection
CD-ROM sync detection
audio sync detection
disable rewriting of corrected error bytes
enable rewriting of error bytes during error correction
normal error corrector operation
one pass only error correction
6
syden
5
asyn
4
cowren
3
onepass
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