Pioneer DV-646A, Service Manual

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