TB1311AFG Toshiba, TB1311AFG Datasheet - Page 17

• Manufacturer Part Number: TB1311AFG
• Manufacturer: Toshiba

Specifications of TB1311AFG

• Function: Programmable audio/video switching and frequency detection
• Features: CVBS, S-Video, YCbCr/RGB, SCART or D-pin, auto sync processor, pre-filter, dummy HD/VD output
• Operating Voltage: 9V, 5V
• Package: QFP80 (lead-free)

POR
H FM2
V FM2
H IN
V IN
V-SYNC-W
HD-POL
VD-POL
H FORMAT
V FORMAT
FB DET1(2)
SIG DET
Read Mode
Register Name
Power On Reset
Horizontal format detection 2
Vertical format detection 2
Input detection to horizontal syncs
Input detection to vertical syncs
V-SYNC width detection
Polarity detection to HD-IN
Polarity detection to VD-IN
Horizontal format detection
Vertical format detection
Voltage detection of FB pin for SCART connector
No-input detection.
voltage is always high or not.
COUNT MAX, H COUNT MIN, SIG DET N, SIG RESET N, SIG RESET, SIG DET IMPE and SIG DET
LVL.
Detects the voltage of FB-IN pin, selected by FB1(2) OUT (to pin 9 (22)) to determine whether the
The signal to the no-input detection circuit is selected by SIG SW. Refer to the relevant functions for H
After power on, 1 is returned at first read. 0 is returned at second and subsequent reads.
Detects whether an input is in one of the defined formats or not. This is based on H FORMAT data.
Detects whether an input is in one of the defined formats or not. This is based on V FORMAT data.
Detects V-SYNC width for detecting 1250i format.
Under A-SYNC = 1 (ON), V-SYNC-W shows 1 when VD width from VD-IN pin is narrower than approx
69 µs, or when V-SYNC width from SYNC-IN pin is narrower than approx 54 µs.
Detects the width from the HD-IN pin to determine whether it is negative or not.
When the High level of the input is wider than approx 13.5 us, HD-POL shows 1.
Detects the width from the VD-IN pin to determine whether it is negative or not.
When the High level of the input is wider than approx 4.5 ms, VD-POL shows 1.
Detects a horizontal format (horizontal frequency).
Detects a vertical format (horizontal frequency) according to V FREQ DET data.
0: Normal
0: Known
0: Known
0: No input
0: No input
0: Wide
0: Positive
0: Positive
0000: 15.625/15.75 kHz 0001: 28.125 kHz
0100: 37.5/37.9 kHz
1000: 75 kHz
000: 50 Hz
100: 25 Hz
0: Not always high
0: No input
0101: 45/48 kHz
1001 to 1111: Undefined
001: 60 Hz
101: 24 Hz
Preliminary
17
1: Register preset
1: Unknown
1: Unknown
1: Signal detected
1: Signal detected
1: Narrow
1: Negative
1: Negative
1: Always high
1: A signal detected
Function
0010: 31.25/31.5 kHz
0110: 56.25 kHz
010: 48 Hz
110 to 111: Undefined
0011: 33.75 kHz
0111: 64/67.5 kHz
011: 30 Hz
TB1311AFG
2005-12-20