參數(shù)資料
型號: CH7012A
廠商: Electronic Theatre Controls, Inc.
英文描述: Chrontel CH7012 TV Output Device
中文描述: 昆泰CH7012電視輸出設(shè)備
文件頁數(shù): 8/42頁
文件大?。?/td> 551K
代理商: CH7012A
CHRONTEL
Input Interface
CH7012A
8
201-0000-042 Rev. 1.1, 9/29/2000
Two distinct methods of transferring data to the CH7012 are described. They are:
Multiplexed data, clock input at 1X pixel rate
Multiplexed data, clock input at 2X pixel rate
For the multiplexed data, clock at 1X pixel rate the data applied to the CH7012 is latched with both edges of
the clock (also referred to as dual-edge transfer mode). For the multiplexed data, clock at 2X pixel rate the data
applied to the CH7012 is latched with one edge of the clock. The polarity of the pixel clock can be reversed
under
serial port
control.
Input Clock and Data Timing Diagram
The figure below shows the timing diagram for input data and clocks. The first XCLK/XCLK* waveform
represents the input clock for the multiplexed data, clock at 2X pixel rate method. The second XCLK/XCLK*
waveform represents the input clock for the multiplexed data, clock at 1X pixel rate method.
Figure 4: Interface Timing
1
D[11:0], H, V DE times measured when input equals Vref+100mV on rising edges, Vref-100mV on falling edges.
Table 3: Interface Timing
Symbol
Parameter
Min
Max
Unit
V
OH
Output high level of interface signals
DVDDV - 0.2
DVDDV + 0.2
V
V
OL
Output Low level of interface signals
-0.2
0.2
V
t1
1
D[11:0], H, V & DE to XCLK = XCLK* Delay (setup time)
TBD
nS
t2
1
XCLK = XCLK* to D[11:0], H, V & DE Delay (hold time)
TBD
nS
DVDDV Digital I/O Supply Voltage
1.1 – 5%
3.3 + 5%
V
D[11:0]
XCLK/
XCLK*
H
V
DE
64 P-OUT
V
OH
V
OL
V
OH
V
OL
V
OH
V
OL
V
OH
V
OL
V
OH
V
OL
t1
t2
t2
t1
1 VGA Line
XCLK/
XCLK*
V
OH
V
OL
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