WM8214 Datasheet, PDF (4/35 Pages) Wolfson Microelectronics plc – 40MSPS 16 BIT CCD DIGITISER

WM8214
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PIN DESCRIPTION
PIN
NAME
TYPE
DESCRIPTION
1
RINP
Analogue input Red channel input video.
2
AGND2
Supply
Analogue ground reference.
3
DVDD1
Supply
Digital supply for logic and clock generator. This must be operated at the same
potential as AVDD.
4
OEB
Digital input Output Hi-Z control, all digital outputs disabled when register bit OEB = 1 or register
bit OPD = 1.
5
VSMP
Digital input Video sample timing pulse.
6
RSMP
Digital input Reset sample timing pulse (also used for RLC control).
7
MCLK
Digital input Master (ADC) clock. This determines the ADC conversion rate.
8
DGND
Supply
Digital ground reference.
9
SEN
Digital input Enables the serial interface when high.
10
DVDD2
Supply
Digital supply, all digital I/O pins.
11
SDI
Digital input Serial data input.
12
SCK
Digital input Serial clock.
Digital multiplexed output data bus.
ADC output data (d15:d0) is available in multiplexed format as shown. See ‘Output
Formats’ description in Device Description section for details of other output modes.
A
B
13
OP[0]
Digital output
d8
d0
14
OP[1]
Digital output
d9
d1
15
OP[2]
Digital output
d10
d2
16
OP[3]
Digital output
d11
d3
17
OP[4]
Digital output
d12
d4
18
OP[5]
Digital output
d13
d5
19
OP[6]
Digital output
d14
d6
20
OP[7]/SDO Digital output
d15
d7
Alternatively, pin OP[7]/SDO may be used to output register read-back data when
register bit OEB = 0, OPD = 0 and SEN has been pulsed high. See Serial Interface
description in Device Description section for further details.
21
AVDD
Supply
Analogue supply. This must be operated at the same potential as DVDD1.
22
AGND1
Supply
Analogue ground reference.
23
VRB
Analogue output Lower reference voltage.
This pin must be connected to AGND via a decoupling capacitor.
24
VRT
Analogue output Upper reference voltage.
This pin must be connected to AGND via a decoupling capacitor.
25
VRX
Analogue output Input return bias voltage.
This pin must be connected to AGND via a decoupling capacitor.
26 VRLC/VBIAS Analogue I/O Selectable analogue output voltage for RLC or single-ended bias reference.
This pin would typically be connected to AGND via a decoupling capacitor.
VRLC can be externally driven if programmed Hi-Z.
27
BINP
Analogue input Blue channel input video.
28
GINP
Analogue input Green channel input video.
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PP Rev 1.6 March 2004
4