參數(shù)資料
型號(hào): VPX3214C
廠商: Electronic Theatre Controls, Inc.
英文描述: Video Pixel Decoders
中文描述: 視頻解碼器像素
文件頁數(shù): 71/80頁
文件大?。?/td> 752K
代理商: VPX3214C
VPX 3220 A, VPX 3216 B, VPX 3214 C
PRELIMINARY DATA SHEET
MICRONAS INTERMETALL
71
6.6.12.4. Characteristics, Asynchronous Mode
If the digital video interface is in asynchronous mode,
then the data transfer is controlled by an external clock
signal. Therefore, the interface signal PIXCLK is used as
an input signal. The video data refers to the positive or
negative slope of PIXCLK, depending on the setting of
the I
2
C reg. F1
hex
bit[2]. In asynchronous mode, the
PIXCLK is always a single edge clock. If luma and chro-
ma data should be transferred via A-port (double clock
mode), then each data requires a complete clock cycle
of PIXCLK. A complete pixel (luma and chroma) needs
two complete clock cycles.
PIXCLK (in)
neg. edge triggered
A[7:0],
B[7:0],
ALPHA
PIXCLK (in)
pos. edge triggered
FE
25 ns
0 ns
50 ns
75 ns
100 ns
2.4 V
1.5 V
0.6 V
2.4 V
1.5 V
0.6 V
2.4 V
1.5 V
0.6 V
t
RA
/t
FA
t
RB
/t
FB
t
D
Detailed Timing
PIXCLK (in)
neg. edge triggered
B[7:0],
ALPHA
A[7:0]
t
FA
t
RA
2.4 V
1.5 V
0.6 V
2.4 V
1.5 V
0.6 V
PIXCLK (in)
pos. edge triggered
Φ
CYCL
Φ
H
Φ
H
Φ
L
Φ
L
t
D*
FE
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