ADV7170/ADV7171
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
44 43 42 41 40 39 38 37 36 35 34
1
33
32
31
30
29
28
27
26
25
24
23
V
V
REF
AA
PIN 1
2
3
P5
DAC A
DAC B
P6
P7
P8
P9
4
ADV7170/ADV7171
V
AA
MQFP/TQFP
5
GND
6
V
TOP VIEW
(Not to Scale)
AA
7
P10
P11
DAC D
DAC C
COMP
8
9
P12
10
11
GND
SDATA
SCLOCK
V
AA
12 13 14 15 16 17 18 19 20 21 22
Figure 5. Pin Configuration
Table 9. Pin Function Descriptions
Input/
Output Description
Pin No.
1, 11, 20, 28, 30
2 to 9, 12 to 14,
38 to 42
Mnemonic
VAA
P15 to P0
P
I
Power Supply (3 V to 5 V).
8-Bit 4:2:2 Multiplexed YCrCb Pixel Port (P7 to P0) or 16-Bit YCrCb Pixel Port (P15 to P0).
P0 represents the LSB.
10, 19, 21, 29, 43
15
GND
HSYNC
G
I/O
Ground Pin.
HSYNC
(Mode 1 and Mode 2) Control Signal. This pin may be configured to output (master
mode) or accept (slave mode) sync signals.
VSYNC
16
17
VSYNC I/O
I/O
FIELD/
Dual Function FIELD (Mode 1) and
(Mode 2) Control Signal. This pin may be
configured to output (master mode) or accept (slave mode) these control signals.
Video Blanking Control Signal. The pixel inputs are ignored when this is Logic Level 0. This
signal is optional.
BLANK
18
22
ALSB
RESET
I
I
TTLAddress Input. This signal sets up the LSB of the MPU address.
The input resets the on-chip timing generator and sets the ADV7170/ADV7171 into default
mode. This is NTSC operation, Timing Slave Mode 0, 8-bit operation, 2 × composite and
S-Video out, and DAC B powered on and DAC D powered off.
23
24
25
SCLOCK
SDATA
COMP
I
MPU Port Serial Interface Clock Input.
MPU Port Serial Data Input/Output.
Compensation Pin. Connect a 0.1 μF capacitor from COMP to VAA. For optimum dynamic
performance in low power mode, the value of the COMP capacitor can be lowered to as low
as 2.2 nF.
I/O
O
26
27
31
32
DAC C
DAC D
DAC B
DAC A
O
O
O
O
RED/S-Video C/V Analog Output.
GREEN/S-Video Y/Y Analog Output.
BLUE/Composite/U Analog Output.
PAL/NTSC Composite Video Output. Full-scale output is 180 IRE (1286 mV) for NTSC and
1300 mV for PAL.
33
34
VREF
RSET
I/O
I
Voltage Reference Input for DACs or Voltage Reference Output (1.235 V).
A 150 Ω resistor connected from this pin to GND is used to control full-scale amplitudes
of the video signals.
Rev. C | Page 11 of 64
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