TB1311AFG Toshiba, TB1311AFG Datasheet - Page 15

• 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)

V-DET
HD WIDTH
HV-POL
HV DET
HV OUT
H DMY
V DMY
FB2 PIN-M, L
Register Name
Switches the V format detection mode.
Switches the width of HD-OUT (pin 12) from SYNC2-IN (pin 15).
Remark: HD WIDTH = 1 (NARROW) is recommended for the 1125/50p/60p format
Switches the polarity of HD/VD output.
Selects the input for format detection.
Switches the outputs from HD/VD-OUT (pin 12/13).
Outputs the dummy HD at no input.
Note: The HD output does not synchronize with input sync, when A-SYNC = OFF
Outputs the dummy VD at no input.
Note: The VD output does not synchronize with input sync, when A-SYNC = OFF
Changes FB2-OUT pin (pin 22) function.
Referential Read registers for FB2 PIN-M/L = Mode 1:
Referential Read registers for FB2 PIN-M/L = Mode 2:
The polarity of HD/VD OUT (pin 12, 13) is set.
The frequency of the dummy HD output depends on the HV FREQ2 setting (when
A-SYNC = OFF) or
is based on H IN result.
The frequency of the dummy VD output depends on HV FREQ2 setting (when
A-SYNC = OFF) or
is based on the V IN result.
In FB2 PIN-M/L = ON, the level of pin 22 becomes HIGH when the Read registers
below change. The level of pin 22 becomes LOW after the I
pin voltage is used for a sign to detect input signal changes for a microprocessor.
For FB2 PIN-M/L = ON, set A-SYNC = 1 (ON) and FB2 MUTE = 1 (MUTE).
0: 50/60Hz only
0: WIDE
0: Positive
When A-SYNC = 0 (Manual Mode)
When A-SYNC = 1 (Automatic Mode)
0: SYNC2-IN (pin 15)
0: OFF
0: OFF
FB-DET1, SIG-DET
H-FM2, V-FM2, H-IN, V-IN, HV-OUT FORMAT
FB2 PIN-M
and when a sync is input.
and when a sync is input.
0: SYNC1-IN (pin 33)
This function is invalid. The input is selected by HV OUT.
owing to crosstalk from HD-OUT to video signals so that spike noises on
video signals will occur.
0
0
1
1
FB2 PIN-L
HV-OUT FORMAT
HV-OUT FORMAT
0
1
0
1
Preliminary
OFF (FB2-OUT)
Mode 1 for no-input detection
Mode 2 for format detection
Not available
Function
15
1: Negative
1: HD/VD-IN (pins 31/30)
1: ON (Dummy HD output at no input)
1: ON (Dummy VD output at no input)
1: Full detection
1: NARROW
1: HD/VD-IN (pins 31/30)
(when A-SYNC = ON). No-input detection
(when A-SYNC = ON). No-input detection
Mode
2
CBUS reading. The
TB1311AFG
Preset Value
2005-12-20
50/60 only
SYNC2-IN
Positive
SYNC
WIDE
OFF
OFF
OFF
(00)
(0)
(0)
(0)
(0)
(0)
(0)
(0)