參數(shù)資料
型號(hào): LC7442
廠商: Sanyo Electric Co.,Ltd.
英文描述: PIP(Picture in Picture) Controllers(應(yīng)用于電視機(jī)和VCR 畫中畫的存儲(chǔ)控制器)
中文描述: 畫中畫(畫中畫)控制器(應(yīng)用于電視機(jī)和錄像機(jī)畫中畫的存儲(chǔ)控制器)
文件頁數(shù): 18/23頁
文件大?。?/td> 317K
代理商: LC7442
LC7442, 7442E
Initial Settings
RES pin: reset
This pin must be held low when power is first applied.
Internal control registers
The table below lists the states of the registers following a reset.
Register
State
SBY
H
KOUT–A, KOUT–B
L
PLL6
L
PLL5
L
PLL4
H
PLL3
H
Registers other than the above are not initialized by a reset.
Serial Data Interface
Serial input format
The first 8 bits of data following SDE going low specify an address, and the next 8 bits are register data for that address.
The last 8 bits of data are transferred to the incremented address.
The address can be re-specified after switching SDE from low to high to low again ( ).
Since the PLL clock is not used for serial data transfer, data transfers can be performed when SBY is high. However,
data cannot be transferred to registers that are initialized by a reset.
Since there is no way to confirm that the transferred data was latched correctly, we recommend refreshing this data
periodically.
No. 4412-18/22
Power supply (DV
DD
, AV
DD
, OV
DD
, KV
DD
)
RES
t
D
: At least a few microseconds.
Notes: H: V
DD
level
L: V
SS
level
These states are set even if SBY = H.
Since all system operations are stopped at this time, the data held in external
memory cannot be retained.
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