WM8143-12 Wolfson Microelectronics Ltd., WM8143-12 Datasheet - Page 8

• Manufacturer Part Number: WM8143-12
• Description: WM8143 : 10 or 12-BIT, 4MSPS Analogue Front End For CCD Image Sensors
• Manufacturer: Wolfson Microelectronics Ltd.

WM8143-12
System Description
Figure 1 System Diagram
The WM8143-12 signal processing IC interfaces
typically via buffering and AC coupling to the output of
CCD image sensors. The WM8143-12 also interfaces
to CIS image sensors via DC coupling.
Analogue output signals from the image sensor are
sampled, amplified and offset-corrected by the IC
before being converted into digital form by an on-board
high-speed
converter. Figure 1 illustrates a typical system
implementation where the three colour outputs from the
CCD image sensor are buffered and AC coupled to the
analogue inputs of the WM8143-12.
COLOUR CCD
SENSOR
12-bit
GREEN
BLUE
RED
resolution
BUFFERING
FOR CCD
analogue
Wolfson Microelectronics
to
digital
RINP
GINP
BINP
WM8143-12
8
The digital interface to the WM8143-12 can be divided
into three distinct sections: -
These sections are constructed for ease of use by the
system designer and are described in detail on the
following pages of this datasheet.
SCK/RNW
Parallel Data I/O
Digital Control/Serial Timing
Analogue Interface Timing
SEN/STB
OP[11:0]
SDI/DNA
NRESET
VSMP
MCLK
OEB
RLC
ANALOGUE
INTERFACE TIMING
PD. Rev 4 Nov. 99
CONTROL/SERIAL
DATA IN
PARALLEL
DATA I/O
Production Data