SAA7284ZP PHILIPS [NXP Semiconductors], SAA7284ZP Datasheet - Page 17

• Manufacturer Part Number: SAA7284ZP
• Description: Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
OVW
This bit is set when new additional data bits are written to
the I
SAD
This bit is set HIGH when new additional data is written
into the I
data.
CI1
These are the CI bits decoded by majority logic from the
parity checks of the last ten samples in a frame.
Indicator bits
Table 13 is the truth table for the indicator bits.
Table 13 Indicator bits functional truth table
1996 Oct 24
Stereo
M1 + M2
M1 + data
Transparent data
Any currently undefined combination of C1, C2 and C3
Decoder unsynchronized (OS = logic 0)
Terrestrial digital sound decoder for
conventional intercarrier PLL-IF systems
AND
2
C-bus without the previous bits being read.
CI2
2
C-bus, and cleared by the action of reading the
TRANSMISSION
C1
0
0
1
1
C2
17
0
1
0
1
AD10, AD9
These are the three most significant additional data bits.
C1, C2
These are the transmitted control bits, see Table 13.
BG/I
When set HIGH this bit indicates that the DQPSK
demodulator is switched to system BGH. When LOW,
indicates that DQPSK demodulator is switched to
system I.
AND
C3
0
0
0
0
AND
C3
AD8
S/M
1
0
0
0
0
0
D/S
0
1
0
0
0
0
Preliminary specification
VDSP
SAA7284
1
1
1
0
0
0
OS
1
1
1
1
1
0