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FV-DB1E
7 – 3
IC401 RH-iXA021SJZZ: System Microcomputer (IXA021SJ) (1/2)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Pin No.
Port Name
Terminal Name
Input/Output
Function
1
P50/A8
A_MUTE
Output
AUDIO MUTE control output. “L”: MUTE OFF “H”: MUTE ON
2*
P51/A9
NO USE
—
Not used. (fixed to Low as output pin)
3
P52/A10
PLL_CE
Output
Output pin for enabling TUNER IC LV23002 chip.
4
P53/A11
VOL_CE
Output
Output pin for enabling Volume IC LC75341 chip.
5
P54/A12
LINE_MUTE
Output
LINE MUTE control output. “L”: MUTE OFF “H”: MUTE ON
6*
P55/A13
DAB
Output
DAB RF IN control output. “H”: No RF IN “L”: RF IN
7
P56/A14
DAB POWER
Output
DAB power supply control output. “H”: OFF “L”: ON
8*
P57/A15
NO USE
—
Not used. (fixed to Low as output pin)
9
VSS0
VSS0
—
PORT GND.
10
VDD0
VDD0
Input
PORT power supply. (3.3 V)
11*
P30
NO USE
—
Not used. (fixed to Low as output pin.)
12*
P31
NO USE
—
Not used. (fixed to Low as output pin.)
13*
P32/SDA0
NO USE
—
Not used. (fixed to Low as output pin.)
14*
P33/SCL0
NO USE
—
Not used. (fixed to Low as output pin.)
15
P34/SI3/TxD2
TX
Output
Not used functionally. Normally fixed to output “L”.
(Output for received data from FLASH writer.)
(Output for received data from FLASH writer.)
16
P35/SO3/RxD2
RX
Input
Not used functionally. Normally fixed to output “L”.
(Input for received data from FLASH writer.)
(Input for received data from FLASH writer.)
17
P36/SCK3/ASCK2
SCK
Input
Not used functionally. Normally fixed to output “L”.
(Input for transfer clock from FLASH writer.)
(Input for transfer clock from FLASH writer.)
18
P20/SI1
DO
Input
Input pin for receiving tuner communication data. TUNER
→System
19
P21/SO1
DI
Output
Output for sending TUNER/Volume/LCD communication command data.
System
System
→TUNER/Volume/LCD
20
P22/SCK1
CLK
Output
Output pin for TUNER/Volume/LCD communication synchronous clock.
Synchronous fall
Synchronous fall
21
P23/RxD0
S1_DIN
Input
Input pin for receiving DAB UNIT communication data.
DAB UNIT
DAB UNIT
→System
22
P24/TxD0
S1_DOUT
Output
Output for sending DAB UNIT communication command data.
System
System
→DAB UNIT
23
P25/ASCK0
SCP_CLK
Input
Input pin for DAB UNIT communication synchronous clock.
Synchronous rise
Synchronous rise
24
VDD1
VDD1
Input
Power supply. (3.3 V) (except for PORT.)
25
AVSS
AVSS
—
A/D converter GND. (connected to VSS. A/D converter not used.)
26*
P17/ANI7
NO USE
—
Not used. (fixed to Low as output pin.)
27*
P16/ANI6
NO USE
—
Not used. (fixed to Low as output pin.)
28*
P15/ANI5
NO USE
—
Not used. (fixed to Low as output pin.)
29*
P14/ANI4
NO USE
—
Not used. (fixed to Low as output pin.)
30*
P13/ANI3
NO USE
—
Not used. (fixed to Low as output pin.)
31
P12/AN12
AD2
Input
A/D capture, main unit key input 2.
32
P11/AN11
AD1
Input
A/D capture, main unit key input 1.
33
P10/AN10
AD0
Input
A/D capture, main unit key input 0.
34
AVREF
AV_REF
Input
A/D converter power supply. (connected to VSS. A/D converter not used.)
35*
P80/SS1
NO USE
—
Not used. (fixed to Low as output pin.)
36
RESET
RESET
Input
Microcomputer reset input. Active “H”.
Connected to FLASH writer’s RESET line when writing.
Connected to FLASH writer’s RESET line when writing.
37
XT2
XT2
Output
Sub clock output. 32.768 kHz crystal oscillator connection.
38
XT1
XT1
Input
Sub clock input. 32.768 kHz crystal oscillator connection.
39
IC (VPP)
IC (VPP)
—
Flash memory pin. External PULL DOWN at 10 kohm.
40
X2
X2
Output
Main clock output. 8.38 MHz crystal oscillator connection.
41
X1
X1
Input
Main clock input. 8.38 MHz crystal oscillator connection.
42
VSS1
VSS1
—
GND (except for PORT.)
43
P00/INTP0
PWR_DET
Input
AC adaptor detection. “H”: AC adapter
44
P01/INTP1
PON_DET
Input
POWER key input. “L”: POWER OFF “H”: POWER ON
45
P02/INTP2
P_SUPPLY
Input
Input pin for detecting battery connection.
“L”: Battery connected. “H”: Not connected.
“L”: Battery connected. “H”: Not connected.
46*
P03/INTP3/ADTRG
NO USE
—
Not used. (fixed to Low as output pin.)
47*
P70/TI000/TO00
STB
Output
Chip select control output to LCD driver.
48*
P71/TI010
NO USE
Output
Not used. (fixed to Low as output pin.)
49
P72/TI50/TO50
NO USE
Output
Not used. (fixed to Low as output pin.)
50
P73/TI51/TO51
NO USE
—
Not used. (fixed to Low as output pin.)
51*
P74/PCL/TI011
NO USE
—
Not used. (fixed to Low as output pin.)
52
P75/BUZ/TI001/TO01
BUZ
Output
Buzzer output pin.
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