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TA1370FG
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA1370FG
SYNC Processor, Frequency Counter IC for TV Component Signals
TA1370FG is a sync processor for TV component signals. TA1370FG provides sync and frequency counter processing for external input signals. These functions are integrated in a 30 pin SSOP-type plastic package. TA1370FG provides I2C bus interface, so various functions and controls are adjustable via the bus.
Features
• • • • • • • • • • Horizontal synchronization circuit (28.125 kHz, 31.5 kHz, 33.75 kHz, 45 kHz) Horizontal and vertical frequency counter Horizontal PLL Accepts 2-level and 3-level sync Accepts both negative and positive HD and VD Clamp pulse output HD, VD output (polarity inverter) Separated sync output Mask for the copy guard signal Weight: 0.63 g (typ.)
Vertical synchronization circuit (525P, 625P, 750P, 1125I, PAL 100 Hz, NTSC 120 Hz)
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2003-02-19
TA1370FG
Block Diagram
DAC3 30 DAC3 SW TEST DAC3 VD2-OUT 29 INV SW VD1-OUT 28 INV SW NC 27 SYNC1-IN 26 SYNC SEPA DAC1 25 DAC1 SW DAC1 SYNC2-IN Address SW 24 SYNC SEPA 23 SCL 22 I CBUS Decoder
2
SDA 21
NC 20
HD2-OUT Digital GND 19 INV SW 18
NC 17
HD1-OUT 16 INV SW
DV2-OUT SW
DV1-OUT SW
HD2-OUT SW
HD1-OUT SW
V-Input SW H/VFREQ Counter V-FREQ DET SW Clamp Pulse
V C/D
V-FREQ SW
V-SYNC
DAC2 DAC2 SW V Integral
CP SW
H/CSYNC
HD Polarity
2 × fH
H-FREQ DET SW
H-INPUT SW
H-AFC
H C/D
H-Ramp
HVCO
H-FREQ SW
1 HD2-IN
2 VD2-IN
3 HD1-IN
4 VD1-IN
5 Analog GND
6 NC
7 AFC Filter
8 NC
9 HVCO
10 NC
11 VCC
12 DAC2
13 VD3-IN
14 HD3-IN
15 CP-OUT
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TA1370FG
Pin Functions
Pin No. Pin Name Function Interface Circuit Input Signal/Output Signal
11 Input horizontal sync signal. 1 HD2-IN It accepts input of both positive and negative polarity. Input signal from this pin is not synchronized. 1 1 kΩ 50 kΩ
Th: 0.7 V
or
Th: 0.7 V 5
11 Input vertical sync signal. 2 VD2-IN It accepts input of both positive and negative polarity. Input signal from this pin is not synchronized. 2 1 kΩ 45 kΩ
Th: 0.7 V
or
Th: 0.7 V 5
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TA1370FG
Pin No. Pin Name Function Interface Circuit Input Signal/Output Signal
11 Input horizontal sync signal. 3 HD1-IN It accepts input of both positive and negative polarity. Input signal from this pin is not synchronized. 3 1 kΩ 50 kΩ
Th: 0.7 V
or
Th: 0.7 V 5
11 Input vertical sync signal. 4 VD1-IN It accepts input of both positive and negative polarity. Input signal from this pin is not synchronized. 4 1 kΩ 45 kΩ
Th: 0.7 V
or
Th: 0.7 V 5
5 6
Analog GND N.C.
GND pin for analog circuit blocks. Connect to GND.
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TA1370FG
Pin No. Pin Name Function Interface Circuit Input Signal/Output Signal
11
7
AFC Filter
Connect filter for horizontal AFC. Voltage on this pin determines horizontal output frequency. 7
300 Ω
30 kΩ
DC
5
8
N.C.
Connect to GND.
11
9
2 kΩ
Use Murata CSBLA503KECZF30.
1 kΩ 10 kΩ 5
1 kΩ
9
HVCO
Connect ceramic oscillator for.