參數(shù)資料
型號(hào): BU1425AK
廠商: Rohm CO.,LTD.
英文描述: NTSC / PAL digital RGB encoder
中文描述: 的NTSC / PAL編碼器,數(shù)字RGB
文件頁數(shù): 24/32頁
文件大?。?/td> 307K
代理商: BU1425AK
24
Multimedia ICs
BU1425AK / BU1425AKV
4) Odd / even recognition timing in Slave mode
1. Timing based on recognition of odd conditions
The BU1425AK / AKV distinguishes whether the condi-
tions of each field (each time that VSY is input) are odd
or otherwise, and internal operation is carried out based
on that recognition after the data is input. As a result,
HSY and VSY are input under input conditions appropri-
ate to the specified mode, enabling regulated output for
the first time. Odd input conditions are indicated below.
Timing that does not match these conditions is recog-
nized as an even field.
Expanded view
HSY
VSY
HSY
Tvl
VSY
Thvdiff
Fig. 18 Odd recognition conditions
Table 17: Odd recognition conditions
VSY Delay from HSY
Parameter
Symbol
Max.
Typ.
Min.
Tvl
128
VSY input L interval
Thvdiff
Unit
BCLK
BCLK
HSY Rising edge
– 2clk
HSY falling edge
– 1clk
BCLK = One cycle of internal clock
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