WM8144 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
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WM8144
Wolfson Microelectronics plc
WM8144 Datasheet PDF : 27 Pages
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WM8144-10
Pin Descriptions
Pin No.
23
22
21
33
34
35
36
37
38
39
40
32
Name
RINP
GINP
BINP
CDATA[7]
CDATA[6]
CDATA[5]
CDATA[4]
CDATA[3]
CDATA[2]
CDATA[1]
CDATA[0]
MCLK
Type
Analogue IP
Analogue IP
Analogue IP
Digital IO
Digital IO
Digital IO
Digital IO
Digital IO
Digital IO
Digital IO
Digital IO
Digital IP
Description
Red Channel input video
Green Channel input video
Blue Channel input video
Image compensation data read/write at twice ADC conversion rate
Master clock. This clock is applied at either six, four or two times the input
pixel rate depending on the operational mode. MCLK is divided internally to
define the ADC samples rate and to provide the clock source for digital logic.
31
VSMP
Digital IP
Video sample synchronisation pulse. This signal is applied synchronously with
MLCK to specify the point in time that the input is sampled. The timing of
internal multiplexing between the R, G and B channels is derived from this
signal
29
RLC
Digital IP
Selects whether reset level clamp is applied on a pixel-by-pixel basis. If RLC
is required on each pixel then this pin can be tied high
19
VRLC
Analogue OP Selectable analogue output voltage for RLC
13
VRT
Analogue IP
ADC reference voltages. The ADC reference range is applied between
14
VRB
Analogue IP
VRT (full scale) and VRB (zero level). VRU and VRL can be used to
15
VRU
Analogue IP
derive optimum reference voltages from an external 5V reference
16
VRL
Analogue IP
20
VMID
Analogue OP Buffered mid-point of ADC reference string.
42
OP[9]
Digital IO
Tri-state digital 10-bit bi-directional bus. There are four modes:
43
OP[8]
Digital IO
Tri-state: when OEB = 1
44
OP[7]
Digital IO
Output ten-bit: ten bit data is output from bus
45
OP[6]
Digital IO
Output 8-bit multiplexed: data output on OP[9:2] at 2*ADC conversion rate
46
OP[5]
Digital IO
Input 8-bit: control data is input on bits OP[9:2]
47
OP[4]
Digital IO
48
OP[3]
Digital IO
1
OP[2]
Digital IO
2
OP[1]
Digital IO
3
OP[0]
Digital IO
Wolfson Microelectronics
6
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