Sharp XL-DK257N Service Manual page 77

IC1 VHITC94A70FG2: CD MP3 DECODER (2/4)
Pin Description
Pin
Symbol Input / Output
No.
1 AVSS3
2 RFZi Input 3AI/F
3 RFRP Output 3AI/F
4 SBAD/RFDC Output 3AI/F
5 FEi Output 3AI/F
6 TEi Output 3AI/F
7 TEZi Input 3AI/F
8 AVDD3
9 Foo Output 3AI/F
10 TRo Output 3AI/F
11 VREF
12 FMo Output 3AI/F
13 DMo Output 3AI/F
14 VSSP3
15 VCOi Output
16 VDDP3
17 VDD1
18 VSS
19 FGiN Input 3I/F
Input / Output
20 ioO(/Hso)
Input / Output
21 io1
22 VVSS3
23 VXSS3 Input 3AI/F
24 Xo Output 3AI/F
25 XVDD3
26 DVSS3
27 Ro Output 3AI/F
28 DVDD3
29 DVR
30 Lo Output 3AI/F
31 DVSS3
32 VDDT3
33 VSS
34 VDD1
35 VDDM1
36 SRAMSTB Input 3I/F
37 /RST Input 3I/F
Input / Output
38 BUS0
Input / Output
39 BUS1
Input / Output
40 BUS2(So)
Input / Output
41 BUS3(Si)
42 BUCK(CLK) Input 3I/F
43 /CCE Input 3I/F
44 TEST Input 3I/F
45 IRQ Input 3I/F
46 AoUT3(Po4) Output 3I/F
47 AoUT2(Po5) Output 3I/F
Input / Output
48 Pio0
- Grounding pin for 3.3V CD analog circuits.
Input pin for RF ripple zero-cross signal.
RF ripple signal output pin.
Sub beam addition signal or RFDC (Hologram PUH
RF peak detection signal) signal output pin.
Focus error signal input pin.
Tracking error signal input pin.
Tracking error signal zero-cross input pin.
- Power supply pin for 3.3 V CD analog circuits.
Focus servo equalizer output pin.
Tracking servo equalizer output pin.
- Reference voltage pin for analog circuits (1.65V).
Feed servo equalizer output pin.
Disc servo equalizer output pin.
- Grounding pin for 3.3V DSP VCO circuits.
PD output for VCO (control voltage input for VCO).
- Power supply pin for 3.3V DSP VCO circuit.
- Power supply pin for 1.5V digital VCO circuit.
- Grounding pin for 1.5V digital circuits.
FG signal input pin for CAV.CLV:L:, CAV FG input.
Gerenal input /output ports-0 (CD)
3I/F (Playback speed mode flag output Pin.)
Grounding pin for 1.5V digital circuits.
3I/F
Grounding pin for 3.3V digital system circuits oscillator
-
circuit.
Input pin for syetem clock oscillator circuit (External
Rfb=1MΩ).
Output pin for system clock oscillator circuit.
Power supply pin for 3.3 v sy stearm clock oscillator
-
circuit.
- Grounding pin for 3.3V digital circuits.
R channel audio output pin of Audio DAC.
- Power supply pin for 3.3V Audio DAC circuit.
- Reference voltage pin for Audio DAC.
L channel audio output pin of Audio DAC.
- Grounding pin for 3.3V Audio DAC circuit.
- Power supply pin for 3.3 V digital I/O circuit.
- Grounding pin for 3.3V digital circuit.
- Power supply pin for 1.5V digital circuit.
- Power supply pin for 1.5V 1Mbit SRAM.
1Mbit SRAM stand-by pin.
Reset signal input pin.
Data input/output pin -0 for microcontroller interface.
3I/F
Data input/output pin -1 for microcontroller interface.
3I/F
Data input/output pin -2 for microcontroller interface
3I/F (Serial output).
Data input/output pin -3 for microcontroller interface
3I/F (Serial output).
Clock input pin for the microcontroller interface.
(Clock input for Serial communication interface)
Chip enable signal input pin for microcontroller
interface.
Setting pin for LSI test mode.
(Connect to GND in normal operation)
DSP interruption pin (Pull down by 100kΩ when not in
use).
Audio data output pin -3 (DSP general output port -4).
Audio data output pin -2 (DSP general output port -5).
DSP general input/output port -0.
3I/F
Description
8 – 4
XL-DK257N
Default Remarks
-
Input Connect to RFRP 0.033uF
Output
Output
Monitor pin for the signal.
Output
Output
Input Connect to TEL by 0.033uF
-
Output
Built-in series resister 3.3kΩ
Output
Connect to VRO and PVREF.
-
Connect 0.1uF
Output Built-in series resister 3.3kΩ
3-state output (AVDD3,
Output
AVSS3, VREF)
-
Output Three-state output
-
-
-
Input Analog Input
Input Schmitt input COMOS PORT
Input Schmitt input COMOS PORT
-
Input X'tal
Output X'tal
-
-
Output
No capacitor required to DVR
-
pin when built-in audio DAC is
- not in use, however , connect
3.3V to DVDD3 and GND to
Output
DVSS3.
-
- For CD and DSP I/O
- -
- -
- -
Input Schmitt input
Input Schmitt input
Input Schmitt input CMOS PORT
Input Schmitt input CMOS PORT
Input Schmitt input CMOS PORT
Input Schmitt input CMOS PORT
Input Schmitt input
Input Schmitt input
Input Schmitt input
Input Schmitt input
Output CMOS PORT
Output CMOS PORT
Input Schmitt input CMOS PORT