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Teac CX-225iDAB Service Manual page 4

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CX-225iDAB/MC-DX450iDAB
Pin Functions
pin
P
o
t r
N
a
m
e
No
1 VREF
VREFL
2
A
V
S
S
A
3
A
V
C
C
M
4 P70/TA0IN
N.C
5 P71/TA1OUT
N.C
6 P72/TA3OUT
N.C
7 P73/TA4IN
N.C
8 P74/TA5OUT
N.C
9 P75/TA7OUT
N.C
10 P80/TB0IN0/INT5
N.C
11 P81/TB0IN1/INT6
N.C
12 P82/TB0OUT0
N.C
13 P83/TB0OUT1
N.C
14 P84/TB1IN0/INT7
VFD_RESET
15 P85/TB1IN1/INT8
VFD_DO
16 P86/TB1OUT0
VFD_CS
17 P87/TB1OUT1
VFD_CLK
18 P90/TXD0
DAB TXD
19 P91/RXD0
DAB RXD
20 P92/SCLK0/CTS0
N.C
21 P93/TXD1
UPDATE_TXD
22 P94/RXD1
UPDATE_RXD
23 P95/SCLK1/CTS1
P_DWN
2
4
A
M
0
M
2
5
D
V
C
C
M
2
6
X
2
X
2
7
D
V
S
S
G
2
8
X
1
X
2
9
A
M
1
M
30 RESET
Reset
3
1
P
9
/ 6
X
T
1
X
3
2
P
9
/ 7
X
T
2
X
33 EMU0
N.C
34 EMU1
N.C
35 PA0/INT1
REMOTE_IN
36 PA1/INT2
RDS_CLK
37 PA2/INT3
EX_INT.
38 PA3/INT4
BUS_IN
39 PA4
ST-BY_LED
40 PA5
DAB_ON
41 PA6
PWR_ON
42 PA7
FM/AM_ON
4
3
A
L
E
. N
44 P00/AD0
SYSTEM_MUTE
45 P01/AD1
N.C
46 P02/AD2
N.C
47 P03/AD3
N.C
48 P04/AD4
N.C
49 P05/AD5
N.C
50 P06/AD6
N.C
51 P07/AD7
BUS_OUT
52 P10/AD8/A8
N.C
53 P11/AD9/A9
N.C
54 P12/AD10/A10
N.C
55 P13/AD11/A11
N.C
56 P14/AD12/A12
N.C
57 P15/AD13/A13
N.C
58 P16/AD14/A14
RTC_SQW/OUT
59 P17/AD15/A15
RTC_CLK
60 P20/A0/A16
RTC_DOUT
61 P21/A1/A17
RTC_SWITCH
6
2
D
V
S
S
G
6
3
N
M
I
M
6
4
D
V
C
C
M
65 P22/A2/A18
N.C
66 P23/A3/A19
N.C
67 P24/A4/A20
N.C
68 P25/A5/A21
N.C
69 P26/A6/A22
N.C
70 P27/A7/A23
N.C
4
Use
Description
/ I
O
ON
V
S
S
C
U
+
3
3 .
V
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
O
I/O
I
I/O
I/O
O
I/O
I
I/O
I
C
U
+
3
3 .
V
C
U
+
3
3 .
V
t -
l a
2 (
7
M
H
) Z
O
N
D
t -
l a
2 (
7
M
H
) Z
I
C
U
+
3
3 .
V
I
I
t -
l a
3 (
2
7 .
6
8
K
H
) Z
I
t -
l a
3 (
2
7 .
6
8
K
H
) Z
O
O
O
I
I
I
I
I
I
I
I
I/O
O
I/O
O
I/O
O
I/O
O
C
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
O
I/O
O
I/O
I
N
D
C
U
+
3
3 .
V
C
U
+
3
3 .
V
I/O
I/O
I/O
I/O
I/O
I/O
Status
Pull-up NoUse init
stby Act.
X
OPEN
I
X
OPEN
I
X
OPEN
I
X
OPEN
I
X
OPEN
I
X
OPEN
I
X
OPEN
I
X
OPEN
I
X
OPEN
I
X
OPEN
I
X
I
H
L
X
I
-
-
X
I
-
-
X
I
-
-
X
I
-
-
X
I
-
-
X
OPEN
I
X
I
-
-
X
I
-
-
X
I
I
L
-
-
I
I
L
OPEN
OPEN
X
I
-
-
X
I
-
-
O
I
L
X
I
-
-
X
I
L
H
X
I
H
L
X
I
L
H
X
I
H
L
X
O
P
E
N
X
I
H
L
X
OPEN
X
OPEN
X
OPEN
X
OPEN
X
OPEN
X
OPEN
X
I
-
-
X
OPEN
X
OPEN
X
OPEN
X
OPEN
X
OPEN
X
OPEN
X
I
-
-
OPEN
X
OPEN
I
-
-
I
-
-
X
OPEN
O
I
-
-
X
OPEN
X
OPEN
X
OPEN
X
OPEN
X
OPEN
X
OPEN
Note
ADC Reference LOW( GND )
A
D
C
_
G
N
D
M
C
U
p
o
w
r e
vfd reset
vfd data
vfd chip select
vfd clock
DAB TXD
DAB RXD
MCU Updata TXD
MCU Updata RXD
Power down
c
h
p i
o
p
e
a r
e t
s
e
e l
c
, t
M
C
U
p
o
w
e
, r
o
c s
l l i
t a
r o
2 (
7
M
H
) z
G
N
D
o
c s
l l i
t a
r o
2 (
7
M
H
) z
c
h
p i
o
p
e
a r
e t
s
e
e l
t c
MCU reset
R
T
C
o
c s
l l i
t a
r o
3 (
2
7 .
6
8
K
H
) z
R
T
C
o
c s
l l i
t a
r o
3 (
2
7 .
6
8
K
H
) z
remote in
rds clock
bus input
Stand-by LED control
dab on
power on
FM/AM on
system mute
Bus output
RTC SQW/OUT
Real time ic clock
Real time ic data
Remote selector( system or single )
G
N
D
M
C
U
p
o
w
r e
M
C
U
p
o
w
r e
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