-11-
F2HT
QUADRATURE MIXERS, BASEBAND FILTERS
AND AGC GAIN STAGE
COSINE
SINE
CARRIER LOOP PHASE DETECTOR AND DATA SLICERS
CARRIER LOOP
QUADRATURE VCO
BIT RATE
CLOCK RECOVERY
AGC
CONTROLLER
NICAM 728 DECODER AND
DEVICE CONTROLLER
XTAL
OSC
IIC
DAI
DIGITAL FILTER, GAIN,
DE-EMPHASIS
NOISE SHAPER
(LEFT CHANNEL)
BITSTREAM DAC
(LEFT CHANNEL)
OUTPUT SWITCHES AND BUFFER (LEFT CHANNEL)
NOISE SHAPER
(RIGHT CHANNEL)
BITSTREAM DAC
9RIGHT CHANNEL)
OUTPUT SWITCHES AND BUFFER (RIGHT CHANNEL)
26 24 30 31 36 37 21 20 34 33 35 39 48 43
40 41 42 50 49 51
2
46 44
12
16
17 3 4 11 5
15
8
6
7
19
18
1
52
47
38
45
25
27
32
22
23
28
29
MIXREF
DQPSK
VDDF1
VSSF1
COFF
CEYE
VDDF2
VSSF2
REMO
REMVE
IREF
VROF
VRCF
CLKLPF
DATAOUT
DATAIN
XTAL
OSC
VSSX
SDA
SCL
ADSEL
DOBIA
VDDD
VSSD
VSSDAC
EXTL
EXTL
VDDA
VSSA
VROA
VRCA
SOFF
SEYE
PKDET
VCONT
VCLK
PCLK
TEST
RESET
PORT2
MUTE
PORM
PORA
EXT-L
EXT-R
OP-R
OP-L
REPRESENTS CONTROLLER BUS
SAA7283ZP
LEVEL AND
STEREO
ADJUSTMENT
DIGITAL
PLL
OSCILLATOR
DIGITAL PLL
AND
DEMODULATOR
DITAL PLL
AND
DEMODULATOR
DIGITAL
INTEGRATOR
DIGITAL
INTEGRATOR
GENERATION
OF
REFERENCE
VOLTAGES
POWER-ON
RESET
IIC BUS
CONTROL
CONTROL
LOGIC
6dB
6dB
6dB
6dB
500mV RMS
500mV RMS
500mV RMS
500mV RMS
MUTE
V
REF
LEVEL
STEREO
-2dB
0 to 4.5dB
0 to 4.5dB
-2dB
0 to 4.5dB
A/MONO
L
R/B
250MV RMS
L/A/MONO
250MV RMS
DUAL bit
STEREO
bit
14
13
12
11
V
o1
V
o2
V
o3
V
o4
MAIN
SCART
20
1
SCL
SDA
16
18
6
19
GND
XTAL
1/2 Vp
Vp
3
2
4
5
8
7
V
i1
250mV RMS
(from 1st SC)
250mV RMS
(from 2nd SC)
AF1
AF2
V
i2
V
ipil
C
DCL
C
AGC
C
LP
15
17
9
10
C
D1
C
D2
V
i3
V
i4
500mV RMS
TDA9840
SAA7283ZP <NICAM DECODER>
TDA9840 <STEREO/DUAL SOUND PROCESSOR>
