Pioneer DV-646A Service Manual page 98

DV-646A
•
Pin Function
Pin
No. Mnemonic
1–16 P0–P15
17, 25, 29, V
AA
38, 43, 54,
63
18, 24, 26, AGND
33, 39, 42,
55, 64
HSYNC
19
VSYNC
20
BLANK
21
22 ALSB
23 TTXREQ
27 CLKIN
28 CLKOUT
30 SCL
31 SDA
32 SCRESET/
RTC/TR
34 R
SET2
35 COMP 2
36 DAC F
37 DAC E
40 DAC D
41 DAC C
44 DAC B
45 DAC A
46 COMP 1
47 V
REF
48 R
SET1
49
RESET
50
CSO_HSO
51 VSO/CLAMP
52 PAL_NTSC
53, 57–62 NC
56 TTX
98
Input /
Output Function
I 8-Bit or 16-Bit 4:2:2 Multiplexed YCrCb Pixel Port. The LSB of the input data is set up on
Pin P0.
P Analog Power Supply (3.3 V to 5 V).
G Analog Ground.
HSYNC
I/O (Modes 1, 2, and 3) Control Signal. This pin may be configured to be an output
(Master Mode) or an input (Slave Mode) and accept Sync Signals.
VSYNC
I/O Control Signal. This pin may be configured as an output (Master Mode) or as an
input ( Slave Mode) and accept
I/O Video Blanking Control Signal. This signal is optional. For further information see Vertical
Blanking Data Insertion and
I TTL Address Input. This signal sets up the LSB of the MPU address.
O T eletext Data Request Output Signal, used to control teletext data transfer.
I TTL Clock Input. Requires a stable 27 MHz reference clock for standard operation. Alterna-
tively, a 24.5454 MHz (NTSC) or 29.5 MHz (PAL) can be used for square pixel operation.
O Clock Output Pin.
I MPU Port Serial Interface Clock Input.
I/O MPU Port Serial Data Input/Output.
I Multifunctional Input: Real-Time Control (RTC) Input, Timing Reset Input, Subcarrier Reset
Input.
A 1200 Ω resis tor connected from this pin to ground is used to control full-scale amplitudes
I
of the Video Signals from DACs D , E, and F.
Compensation Pin for DACs D, E, and F. Connect a 0.1 µF Capacitor from COMP2 to V
O
O S-Video C/V/RED Analog Output. This DAC is capable of providing 4.33 mA output.
O S-Video Y/U/BLUE Analog Output. This D AC is capable of providing 4.33 mA output.
O Composite/Y/GREEN Analog Output. This DAC is capable of providing 4.33 mA output.
O S-Video C/V/RED Analog Output. This DAC is capable of providing 4.33 mA output.
O S-Video Y/U/BLUE Analog Output. This DAC is capable of providing 4.33 mA output.
O Composite/Y/GREEN Analog Output. This DAC is capable of providing 4.33 mA output.
Compensation Pin for DACs A, B, and C. Connect a 0.1 µ F Capacitor from COMP1 to V
O
I/O Voltage Reference Input for DACs or Voltage Reference Output (1.235 V). An external
V cannot be used in 4 oversampling mode.
REF
A 1200 Ω resistor connected from this pin to ground is used to control full-scale a mplitudes
I
of the Video Signals from DACs A, B, and C.
I T he input resets the on-chip timing generator and sets the ADV7190/ADV7191 into default
mode. See Appendix 8 for Default Register settings.
O D ual function
CSO
I/O M ultifunction Pin.
can be used to drive external circuitry to enable clamping of all Video Signals.
I Input signal to select PAL or NTSC mode of operation, pin set to Logic 1 selects PAL.
No Connect.
I T eletext Data Input Pin.
as a Control Signal.
VSYNC
BLANK
Input section.
or HSO Output Sync Signal at TTL Level.
VSO Output Sync Signal at TTL level. CLAMP TTL Output Signals
.
AA
.
AA