Sharp LC-20B5M Service Manual page 22

LC-20B5M
• PCMCIA card
• DM270 (IC5001) CPU, DSP, DMAC, OSD, NTSC encoder: system control, OSD display, video encoding/decoding
Used at 3.3V (1.5V for DSP)
• DA150 (IC5201)
• 32M FLASH (IC5003)
• 64M SDRAM (IC5006)
• Reg (IC5409)
• Reg (IC5004)
"Tips"
1) With this product, showing images recorded with PC or DSC enables you to check the playing system.
2) With PC, showing images recorded with this product enables you to check the recording system.
3) Video is played at the rate in sync with IIS CLOCK signals from audio circuit. For example, if the IIS CLOCK
signals fail to reach the card playing circuit for some reason, the video is played at the lowest rate and is shown
in slow motion.
Major input/output terminals on the card system
Card side
IC (connector) Pin No. LSI terminal name Connection diagram Types of signals
name
DM270 B3.3V_CARD1A
(IC5001)
103 VIN
102 HIN
100 LLC2 (CLK)
112 YIN0
111 YIN1
110 YIN2
109 YIN3
108 YIN4
107 YIN5
106 YIN6
105 YIN7
55 RESET
10 CA_DOUT
11 DIN
70 VOUT
69 HOUT
68 CKOUT
81 YOUT0
77 YOUT1
76 YOUT2
75 YOUT3
74 YOUT4
73 YOUT5
72 YOUT6
71 YOUT7
P5003 1 I2S_WS
2 GND
3 I2S_CL
4 GND
5 I2SDA_OUT
6 GND
7 I2SDA_IN1
8 GND
9 I2SDA_IN2
10 GND
Reg 1 IN
(IC5409) 2 SW
3 OUT
4 ADJ
5 GND
Used at 5V/3.3V
Audio encoding/decoding
Storing the program for DA150 and DM270
Used for temporary data storage and for image data compression and expansion.
Conversing 4V/6V to 3.3V/5V for PCMCIA
Conversing 3.3V to 1.5V for DSP in DM270
signal name
B3.3V_CARD1A Power supply
VIN
HIN
LLC2
YIN0
YIN1
YIN2 Video input/output Data signal 2 from VPC to DM270
YIN3
YIN4
YIN5
YIN6
YIN7
RESET Data
DOUT communication
DIN
VOUT
HOUT
CKOUT
YOUT0
YOUT1
YOUT2 Video input/output Data signal 2 from DM270 to IP
YOUT3
YOUT4
YOUT5
YOUT6
YOUT7
S_WS
S_CL
S_DO Audio input/output Audio data input from TV main unit
S_DI
SH_DI
B4V/6V1_1A
B4V/6V1_1A
V5EN Power supply
V3EN
GND
Explanation for signals
Power supply 3.3V for DM270
V signal from VPC to DM270
H signal from VPC to DM270
Clock signal from VPC to DM270
Data signal 0 from VPC to DM270
Data signal 1 from VPC to DM270
Data signal 3 from VPC to DM270
Data signal 4 from VPC to DM270
Data signal 5 from VPC to DM270
Data signal 6 from VPC to DM270
Data signal 7 from VPC to DM270
Reset signal from TV microprocessor to DM270
Data signal from TV microprocessor to DM270
Data signal from DM270 to TV microprocessor
V signal from DM270 to IP
H signal from DM270 to IP
Clock signal from DM270 to IP
Data signal 0 from DM270 to IP
Data signal 1 from DM270 to IP
Data signal 3 from DM270 to IP
Data signal 4 from DM270 to IP
Data signal 5 from DM270 to IP
Data signal 6 from DM270 to IP
Data signal 7 from DM270 to IP
I2S word strobe L: Right audio input / H: Left audio input
Clock for I2S serial data transmission timing
In card mode: Card Audio / Not in card mode: Shutter sound
4V/6V output from DC/DC converter to Reg
ON/OFF switch
3V power input from DC/DC converter to Reg
5V power input from DC/DC converter to Reg
For adjustment
GND
22
I/O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
I
I
I
O
O
I
I
I