Datasheet
ADV7170/ADV7171
Rev. C | Page 11 of 64
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
44
CLOCK
43
GND
42
P4
41
P3
40
P2
39
P1
38
P0
37
TTX
36
TTXREQ
35
SCRESET/RT
C
34
R
SET
32
DAC A
31
DAC B
30
V
AA
27
DAC D
28
V
AA
29
GND
33
V
REF
26
DAC C
25
COMP
24
SDATA
23
SCLOCK
2
P5
3
P6
4
P7
7
P10
6
P9
5
P8
1
V
AA
8
P11
9
P12
10
GND
11
V
AA
12
P13
13
P14
14
P15
15
HSYNC
16
FIELD/VSYNC
17
BLANK
18
ALSB
19
GND
20
V
AA
21
GND
22
RESET
PIN 1
ADV7170/ADV7171
MQFP/TQFP
TOP VIEW
(Not to Scale)
00221-005
Figure 5. Pin Configuration
Table 9. Pin Function Descriptions
Pin No. Mnemonic
Input/
Output Description
1, 11, 20, 28, 30 V
AA
P Power Supply (3 V to 5 V).
2 to 9, 12 to 14,
38 to 42
P15 to P0 I 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 GND G Ground Pin.
15
HSYNC
I/O
HSYNC
(Mode 1 and Mode 2) Control Signal. This pin may be configured to output (master
mode) or accept (slave mode) sync signals.
16
FIELD/
VSYNC
I/O
Dual Function FIELD (Mode 1) and
VSYNC
(Mode 2) Control Signal. This pin may be
configured to output (master mode) or accept (slave mode) these control signals.
17
BLANK
I/O Video Blanking Control Signal. The pixel inputs are ignored when this is Logic Level 0. This
signal is optional.
18 ALSB I TTL Address Input. This signal sets up the LSB of the MPU address.
22
RESET
I 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 SCLOCK I MPU Port Serial Interface Clock Input.
24 SDATA I/O MPU Port Serial Data Input/Output.
25 COMP O Compensation Pin. Connect a 0.1 μF capacitor from COMP to V
AA
. For optimum dynamic
performance in low power mode, the value of the COMP capacitor can be lowered to as low
as 2.2 nF.
26 DAC C O RED/S-Video C/V Analog Output.
27 DAC D O GREEN/S-Video Y/Y Analog Output.
31 DAC B O BLUE/Composite/U Analog Output.
32 DAC A O PAL/NTSC Composite Video Output. Full-scale output is 180 IRE (1286 mV) for NTSC and
1300 mV for PAL.
33 V
REF
I/O Voltage Reference Input for DACs or Voltage Reference Output (1.235 V).
34 R
SET
I A 150 Ω resistor connected from this pin to GND is used to control full-scale amplitudes
of the video signals.