TDA4657 Datasheet, PDF (4/17 Pages) NXP Semiconductors – Generic multi-standard decoder

Philips Semiconductors
Generic multi-standard decoder
PINNING
SYMBOL
−(R−Y)_O
DEEM
−(B−Y)_O
CFOB
GND
I_REF
V_P
CFOR
CHR_I
C_ACC
HUE
N_IDT
P_IDT
OSC
PLL
2FSC
N_o
SEC_o
PAL_o
SC
PIN
DESCRIPTION
1 colour difference signal output −(R−Y)* for baseband delay line
2 external capacitor for SECAM de-emphasis
3 colour difference signal output −(B−Y)* for baseband delay line
4 external capacitor SECAM demodulator control (B−Y) Channel
5 ground
6 external resistor for SECAM oscillator
7 supply 8 V
8 external capacitor SECAM demodulator control (R−Y) Channel
9 chrominance signal input
10 external capacitor for ACC control
11 input for HUE control and service switch
12 external capacitor for identification circuit (NTSC)
13 external capacitor for identification circuit (PAL and SECAM)
14 PAL crystal
15 external loop filter
16 2 × f_sc output
17 standard setting input/output for NTSC 4.43
18 standard setting input/output for SECAM
19 standard setting input/output for PAL
20 sandcastle input
Preliminary specification
TDA4657
June 1993
Fig.2 Pin configuration.
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