Pinning - Hitachi 42PD3200A Service Manual

•
Multistandard true synchronous demodulation with active carrier regeneration (very linear demodulation,
good intermodulation figures, reduced harmonics, excellent pulse response)
•
Gated phase detector for L/L accent standard
• Fully integrated VIF Voltage Controlled Oscillator (VCO), alignment-free; frequencies switchable for all
negative and positive modulated standards via I
•
Digital acquisition help, VIF frequencies of 33.4, 33.9, 38.0, 38.9, 45.75 and 58.75 MHz
•
4 MHz reference frequency input [signal from Phase-Locked Loop (PLL) tuning system] or operating as
crystal oscillator
•
VIF Automatic Gain Control (AGC) detector for gain control, operating as peak sync detector for negative
modulated signals and as a peak white detector for positive modulated signals
•
Precise fully digital Automatic Frequency Control (AFC) detector with 4-bit digital-to-analogue converter;
AFC bits via I C -bus readable
2
•
TakeOver Point (TOP) adjustable via I
•
Fully integrated sound carrier trap for 4.5, 5.5, 6.0 and 6.5 MHz, controlled by FM-PLL oscillator
• Sound IF (SIF) input for single reference Quasi Split Sound (QSS) mode (PLL controlled)
• SIF AGC for gain controlled SIF amplifier; single reference QSS mixer able to operate in high performance
single reference QSS mode and in intercarrier mode, switchable via I
•
AM demodulator without extra reference circuit
•
Alignment-free selective FM-PLL demodulator with high linearity and low noise
•
I 2 C-bus control for all functions
•
I 2 C-bus transceiver with pin programmable Module Address (MAD).

12.28.3. Pinning

SYMBOL PIN
VIF1 1
VIF2 2
OP1 3
FMPLL 4
DEEM 5
AFD 6
DGND 7
AUD 8
TOP 9
SDA 10
SCL 11
12
SIOMA
n.c. 13
TAGC 14
REF 15
VAGC 16
CVBS 17
AGND 18
VPLL 19
V 20
P
AFC 21
OP2 22
SIF1 23
SIF2 24
2 C-bus or alternatively with potentiometer
DESCRIPTION
VIF differential input 1
VIF differential input 2
output 1 (open-collector)
FM-PLL for loop filter
de-emphasis output for capacitor
AF decoupling input for capacitor
digital ground
audio output
tuner AGC TakeOver Point (TOP)
I 2 C-bus data input/output
I 2 C-bus clock input
sound intercarrier output and MAD select
not connected
tuner AGC output
4 MHz crystal or reference input
VIF-AGC for capacitor; note 1
video output
analog ground
VIF-PLL for loop filter
supply voltage (+5 V)
AFC output
output 2 (open-collector)
SIF differential input 1
SIF differential input 2
2 C-bus
C-bus
2
31