參數(shù)資料
型號(hào)： TB1239BF
廠商： Toshiba Corporation
英文描述： Bi-CMOS Integrated Circuit Silicon Monolithic
中文描述： 雙CMOS硅單片集成電路
文件頁(yè)數(shù)： 18/26頁(yè)
文件大?。?/td> 333K
代理商： TB1239BF
TB1239BF
2002-02-12
18
External Input SWs
External inputs are selected by the BUS data and fast SWs. Final outputs from pin 21/22/23 are shown in Table 2.
RGB1-IN interface complies with SCART connector. Therefore it is active, when RGB1-IN is enable by the BUS
data and when YS3 (pin 15) is also high. The status of YS3 (pin 15) is responded to the Read BUS data, V15.
Table 2 Outputs from Pin 21/22/23
RGB Select
RGB1 ENB
YS3
(RGB1)
YS1
(YCbCR2)
YS2
(RGB2)
Output
L
0
H
L
Main
(from V-SW)
00
1
H
RGB1
L
0
H
L
YCbCr1
01
1
H
RGB1
L
0
H
L
10
1
H
RGB1
11
―
―
L
―
―
―
―
H
L
YCbCr2
―
―
―
L
―
―
―
H
H
RGB2
Note2: RGB SELECT/RGB1 ENB: I
2
C BUS data, YS1/2/3: Fast SW
Color System
Distinguishable color systems are selected by the write BUS data, COLOR SYSTEM. The demodulated color
system is responded to the read BUS data, COLOR SYSTEM and X’TAL. (refer to BUS CONTROL FUNCTION)
The system data is also responded to Comb SYS (pin 45) and fsc-OUT (pin 46) as Table 3. If distinguishable color
system signal is not received, the system data is responded with B/W.
Besides, if pin 7 is connected to V
CC
(more than 3.5 V), Forced SECAM mode is active. In this mode, SECAM
system is identified forcibly. It has priority over the BUS selection.
Table 3 DC Level of Pin 45 and 46 on Each Color System
Color System
Pin 45
Pin 46
M-PAL
Low
Low
4.43PAL, SECAM, B/W
High
Low
3.58/4.43NTSC
Low
High
N-PAL
High
High
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