Parker TC1475 - Definition & Function of TMPA8873-XXXX Pins

TC1475 / TC2175 / TF2139
12
Definition & Function of TMPA8873-XXXX Pins
Definition & Function of TMPA8873-XXXX Pins
10.
CPU part
item definition description
1 DVD high level output in DVD mode
2 NO USE
3 KEY Control signal input; general
keyboard circuit auto identified
4 GND MCU GND
5 REST MCU reset when power on
6 X-TAC
7 X-TAC
Connect ports for crystal; 20PPM precision required
8 TEST For MCU experimentation, connected to GND normal
9 5V Power input for CCD amplitude restricted circuit
10 Vss GND for CCD amplitude restricted circuit
54 GND GND for surge circuit
55 5V Power for surge circuit;
Duty cycle and Ripple voltage less than 10 mV;
56 AV SW Multi-control level output 2 or 3 TV/AV mode
57 SDA SDA input
58 SOL SCL input
59 50/60HZ Low level when 50HZ
High level when 60HZ
60 NO USE
61 MUTE MUTE control
62 NO USE
63 RMT IN
RC unit signal input
64 Power
Power control; low level for initialization; related with
item ONTIME of Page F11
Note for control port output state: (in the output table below,”0”for low level, “1” for high
level)
Pin3 Description:
Voltage range for each button (middle value is suggested)
KEY Off P+ P- V+ V- MENU TV/AV POWER
Range
0V
≤ 1.16V ≤1.74V ≤ 2.45V ≤ 3.17V ≤ 3.88V ≤ 4.60V ≤ 5V
Range
5V
0≤
0.45V
≤1.02V ≤1.74V ≤ 2.45V ≤ 3.17V ≤ 3.88V ≤ 4.60V