SAA6588 데이터 시트보기 (PDF) - Philips Electronics
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SAA6588 Datasheet PDF : 28 Pages
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Philips Semiconductors
RDS/RBDS pre-processor
Product specification
SAA6588
Table 11 Default values of the write register bits after
reset
BIT
VALUE
COMMENTS
SQCM
0
triggered signal quality
measurement
TSQD
0
no determination of signal
quality
NWSY
1
restart of synchronization
SYM1 and SYM0 00
no error correction during
synchronization
RBDS
0
RDS processing mode
PL1 and PL0
00
pause level 12 mV
DAC1 and DAC0 00
DAVA mode RDS
standard output mode
FEB5 to FEB0 100000 flywheel = 32 decimal
PTF1 and PTF0 00
oscillator
frequency = 4.332 MHz
(SOSC = 1);
pause time = 20.2 ms
(SOSC = 0)
SQS4 to SQS0 01111 gain = 0 dB
READ TRANSMISSION FORMAT
Table 12 Description of decoder and data status
information byte (byte 0R)
BYTE BIT NAME
FUNCTION
0R 7 to 5 BL2 to BL0 block identification number
of last processed block;
see Table 13
4
SYNC 0: not synchronized
1: synchronized
3
DOFL 0: no data overflow
1: data overflow detected
2
RSTD 0: no reset detected
1: reset detected
1
ELB1 error status of last
0
ELB0 processed block;
see Table 14
Table 13 Block identification number (last detected block)
BL2/
BP2
0
0
0
0
1
1
1
1
BL1/
BP1
0
0
1
1
0
0
1
1
BL0/
BP0
0
1
0
1
0
1
0
1
BLOCK IDENTIFICATION
block A
block B
block C
block D
block C’
block E
(RBDS mode)
invalid block E
(RDS mode)
invalid block
Table 14 Processed error correction
ELB1/
EPB1
0
0
1
1
ELB0/
EPB0
0
1
0
1
MODE
DESCRIPTION
ERDA
ERDB
ERDC
ERDD
no errors detected
burst error of maximum
2 bits corrected
burst error of maximum
5 bits corrected
uncorrectable block
Table 15 Bytes 1R to 6R
BYTE BIT
1R 7 to 0
2R 7 to 0
3R 7 to 0
4R 7 to 0
5R 7 to 2
1
0
6R 7 to 5
4
3 to 0
NAME
M15 to
M08
M07 to
M00
PM15 to
PM08
PM07 to
PM00
BEC5 to
BEC0
EPB1
EPB0
BP2 to
BP0
−
SQI3 to
SQI0
FUNCTION
HIGH byte of last
processed block
LOW byte of last
processed block
HIGH byte of previously
processed block
LOW byte of previously
processed block
number of counted block
errors (0 to 63)
error status of previously
processed block;
see Table 14
block identification number
of previous processed
block; see Table 13
not used (undefined)
signal quality indication
(0 to 15)
1997 Sep 01
14
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