1
CPU:
Pin
Assignment
Functions
1
DVD
Output high level in DVD state;
2
NO USE
3
KEY
Key input interface; automatically test Toshiba or Sanyo
key circuit;
4
GND
MCU digital GND;
5
REST
Reset pin, when power is connected, MCU resets;
6
X-TAC
Crystal oscillator connection terminal; required
precision 20PPM;
7
X-TAC
8
TEST
Used for MCU factory test, usually grounded;
9
5V
CCD slicer circuit power input (5V);
10
Vss
CCD slicer circuit grounding;
54
GND
Oscillation circuit grounding terminal;
55
5V
Oscillation circuit power; ripple voltage less than 10mV;
56
AV SW
Output multiple control levels; TV/AV two or three
states;
57
SDA
Serial data output/input;
58
SOL
Serial clock pulse input/output;
59
50/60HZ
50HZ is low level; 60HZ is high level;
60
NO USE
61
MUTE
Mute level control; mute output high level;
62
NO USE
63
RMT IN
Remote signal input;
64
Power
Power control, initial low level valid; controlled by F11
ontime item.
Notes for terminal control output state: (0 stands for low level, 1 stands for high level)
Pin3 indication
Value range for keys: (central value in the range of key voltage is recommended)
KEY
Off
P+
P-
V+
V-
MENU
TV/AV
POWER
Value
range
(Sanyo)
0V
≤1.16
V
≤1.74
V
≤2.45
V
≤3.17
V
≤3.88
V
≤4.60
V
≤5V
Value
range
(Toshiba)
5V
0≤0.4
5V
≤1.02
V
≤1.74
V
≤2.45
V
≤3.17
V
≤3.88
V
≤4.60
V
Precision of crystal Pin6 and Pin7 is below 20PPm.
Supply ripple of Pin55 is smaller than 0.01V (Power supply pin of OSD time power
supply pin).
Pin56 AV/TV switch
TV
AV1/S/DVD
AV2
External connection method
OPT.2=0
0V
0V
5V
Connect pull-up resistor to 5V or
8V.
OPT.2=1;OPT.5=0
0V
2.5V
5V
Apply 10K pull-up resistor to 5V,
10K pull-down resistor to the
ground.
OPT.2=1;OPT.5=1
0V
5V
2.5V
Apply 10K pull-up resistor to 5V,
