TB1305FG Datasheet, PDF (7/33 Pages) Toshiba Semiconductor – Component SW, Sync Separation and H/V Frequency Counter IC for TVs

TB1305FG, TB1308FG
Bus Control Functions
Write Mode
Register Name
MUTE
FILPASS
HD WIDTH
DAC1,2
YCbCr SW
GAIN
f0 SW
BANDWIDTH
fc HALF
Function
Preset Value
Swtches mute mode.
0: NORMAL
1: Video mute
Switches the bandwidth limit filter.
0: ON (by-pass)
1: OFF
Switches the width of HD-OUT.
0: WIDE
1: NARROW
Remark: HD WIDTH = 1 (NARROW) is recommended for the 1125/50p/60p format
owing to crosstalk from HD-OUT to video signals so that spike noises on video
signals will occur.
1-bit DAC switching
Output voltages of DAC1 (pin 17) and DAC2 (pin 42) are controlled. DAC1/2 are
open-collector pins.
0: LOW (ON)
1: HIGH (OPEN)
Switches the component video input and line input
00: Y1 / Cb1 / Cr1 / LINE1, 2, 3-1 (pins 1, 2, 3, 4, 5, 6)
01: Y2 / Cb2 / Cr2 / LINE1, 2, 3-2 (pins 10, 11, 12, 13, 14, 15)
10: Y / C (pins 45, 47. Cr-out is muted.)
11: Y3 / Cb3 / Cr3 (pins 39, 41, 43)
NOTE: The data (11) is not available for the TB1305FG.
Switches the output gain.
Gain of YCbCr output (pins 32, 34, 36) is controlled.
0: 0 dB
1: +6 dB
Remark: GAIN = 0 (0 dB) is recommended for the 1125/50p/60p format since this
offers superior frequency characteristics to those of +6 dB mode.
Switches the f0 of bandwidth limit filter
0: HIGH
1: LOW
Switches the f0 of bandwidth limit filter
0000000: MIN (low)
1111111: MAX (high)
Switches the frequency of bandwidth limit filters for Cb/Cr
The cutoff frequency of bandwidth limit filters for Cb/Cr is 1/2 to Y.
0: OFF (same for 3 outputs)
1: ON (1/2 fc for Cb/Cr)
NORMAL
(0)
ON
(0)
WIDE
(0)
LOW
(0)
Y1 / Cb1 / Cr1
(00)
0 dB
(0)
HIGH
(0)
MIN
(0000000)
OFF
(0)
7
2007-07-11