TW9920 Datasheet, PDF (81/88 Pages) List of Unclassifed Manufacturers – Analog Video Decoder / Encoder

TW9920
Pin Description
Pin#
I/O
Pin Name
Analog video signals
J8
I
MUX0
K9
I
MUX1
K10
I
MUX2
J10
I
MUX3
K7
I
CIN0
K8
I
CIN1
H9
O
VREFP
H10
O
VREFN
G9
O
VCOM
J9
I
AVSY
J7
I
AVSC
Description
Analog CVBS or Y input. Connect used input to AGND through 0.1uF capacitor.
Analog CVBS or Y input. Connect used input to AGND through 0.1uF capacitor.
Analog CVBS or Y input. Connect used input to AGND through 0.1uF capacitor.
Analog CVBS or Y input. Connect used input to AGND through 0.1uF capacitor.
Analog chroma input. Connect unused input to AGND through 0.1uF capacitor.
Analog chroma input. Connect unused input to AGND through 0.1uF capacitor.
The positive reference for the ADC. It should be connected to AVSS through 0.1uF
capacitor. NC pin.
The negative reference for the ADC. It should be connected to AVSS through a
0.1uF capacitor. NC pin.
The common mode node. It should be connected to analog VSS through a 0.1uF
capacitor. NC pin.
Y signal return.
C signal return.
Clock Signals
G1
I
H1
O
Host Interface
J1
I
H2
I/O
J2
I
XTI
XTO
SCLK
SDAT
SIAD0
General signals
G3
I
RSTB
G2
I
PDN
K1
I
TMODE
H3
-
TEST2
C3, C7,
H6
-
NC
Video output Signals
B4
O
HS
A3
O
VS
B3
O
FLD
C4
O
DVALID
A2
O
MPOUT
External clock input
External clock output
The MPU Serial interface Clock Line.
The MPU Serial interface Data Line.
The MPU interface address select pin 0. This pin is used to select one of the two
addresses that chip will respond. It is internally pulled down to ground.
Reset input. Low active.
Power down control pin. It is high active.
Test pin. It should be low for normal operation.
NC pin.
NC pin.
Horizontal sync and multi-purpose output pin. See register for control
Vertical Sync and multi-purpose output. See register for control information.
Field indicator and multi-purpose output pin. See register for control information.
Data valid flag and multi-purpose output pin. See register for control information.
Multi-purpose output pin.
TECHWELL, INC.
81
REV. D
08/29/2005