66
SEMICONDUCTORS
Only major semiconductors are shown, general semiconductors etc. are omitted to list.
The semiconductor which described a detailed drawing in a schematic diagram are omitted to list.
1. IC s
CS
P FP44 M in UNIT U1
Ter in Function
Pin
Assi n ent Function
I O Port De nition
Function Description
I O
Nor
OFF
1
DC DET
I
Low(0V)
igh(3.3V)
Detection signal is for DC short circuit(3.3V
V and 12V).It
only work in power-on mode.
2
Port 3.6 PIO
-
i-
i-
Not use
3
MCU SET1
I
igh(3.3V)
or Low(0V)
igh(3.3V)
or Low(0V)
MCU setting pin by e ternail resistance. Default is high
4
MCU SET2
I
igh(3.3V)
or Low(0V)
igh(3.3V)
or Low(0V)
MCU setting pin by e ternail resistance. Default is high
MCU PS ON
O
igh(3.3V)
i- (0V)
Power enable is to control the system power on off. igh is for
the system power on and low is for standby mode.
6
XOUT
O
-
-
XOUT Crystal Oscillator Output
7
XIN
I
-
-
XIN Crystal Oscillator Input
8
MCU SDA
I O
igh(3.3V)
igh(3.3V)
I2C DATA signal is for EEPRM IC (24C02).
9
MCU CEC IN
I
igh(3.3V)
igh(3.3V)
DMI CEC signal input. It wakes-up to the system to power on
when receive the CEC power command in standby mode.
10
Port 3.4 PIO
-
i-
i-
Not use
11
MCU SCL
O
igh(3.3V)
igh(3.3V)
I2C Clock signal is for EEPRM IC (24C02).
12
VSS
POWER
-
-
round Voltage 0V
13
RXVDD
POWER
-
-
VDD for RTC 3.3V
14
RXIN
I
-
-
Crystal IN for RTC oscillator
1
RXOUT
O
-
-
Crystal OUT for RTC oscillator
16
MCU SET3
I
igh(3.3V)
or Low(0V)
igh(3.3V)
or Low(0V)
MCU setting pin by e ternail resistance. Default is high
17
MCU AMUTE
O
Low(0V)
igh(3.3V)
Muting signal for audio output. igh is for muting and Low is muting off.
18
DMI POWER CTRL
O
Low(0V)
igh(3.3V)
Power enable is for the DMI V power supply. igh is for
DMI work normal. And low is for DMI off.
19
V MUTE
O
igh(3.3V)
i- (0V)
Muting signal for CVBS output. igh is for CVBS output is
enabled. And low disable the CVBS output.
20
CEC RS232 SWITC
O
Low(0V)
igh(3.3V)
Switch singal is to switch MCU receive the singal of the DMI
CEC and RS232. igh is for MCU to receive the signal of DMI
CEC and low is for switch those singal input to MT8 30
21
MCU IIC SCL
I
igh(3.3V)
i- (0V)
I2C Clock signal that comunicate with MT8 30. (Slave mode).
22
MCU IIC SDA
I O
igh(3.3V)
i- (0V)
I2C Data signal that comunicate with MT8 30. (Slave mode).
P
G
A
V
M
ID
P
3.
S
P
IC
L
RXVDD
P2.4 T2EX CMPD
34
1
P1.4 SWC2
P1.5 SWC3
P3. CEX2 SWA1 CMPA
P3.1 CEX3 SWA2 CMPA
P3.4
SS
P1.2 SDA SWC
P2.5 T2 CMPC
PGAOUT1 P3.2 CEX4
PGAIN1 P3.3 CEX5
P4.2 SWB3
P2.2
TX
D
1
P2. CMPB
P2. CMPA SWA
RSTN
P1.1
AD
D4
CEX
1
P1.
AD
D3
CEX
P.
RX
D
ADD
2
P
.
T
X
D
A
D
D
1
P
.
PI
NT
1.
A
D
A
1
P
2.
3
R
X
D
1
P2
.1
XO
UT
P
2.
X
IN
P1. T SWB PINT .1
P1. T1 SWB1 PINT .
P1.3 SCL SWC1
PG
A
O
U
T
2
P
3.
5
M
O
S
I
P4
.3
SCL2
P
4.
1
S
D
A
2
VSS
PG
AI
N2
P3.
M
ISO
P
.5
PI
NT
1.
5
A
D
C
2
P
.4
PI
NT
1.
4
A
D
C
1
P
.3
PI
NT
1.
3
A
D
B
2
P
.1
PI
NT
1.
1
A
D
A
2
P
4.
C
E
C
VDD
VDD25
P
.2
PI
NT
1.
2
A
D
B
1
RXIN
RXOUT
VSS
44
35
3
3
3
3
4
41
42
43
23
24
25
2
2
2
2
3
31
32
33
2
3
4
5
1
11
22
21
2
1
1
1
1
15
14
13
12
CS
F
P FP 44
