19
FZDA07ELEF2/EREF2/MRHF2
MICROCOMPUTER’S TERMINAL DESCRIPTION
●
AUDIO MICROCOMPUTER 70F3334GC5Y1 (X14-987: IC62)
Pin No.
Pin Name
I/O
Application
Truth Value
Table
Processing Operation Description
1
AVREF0
Power supply terminal
BU3.3V connection
2
AVSS
GND terminal
GND connection
3
ADC_RST
→
NC
O
ADC reset control
→
Unused pin
Output is fi xed to L, Terminal OPEN
4
RDS_AFS
O
Time constant control in NOISE circuit during AFS
(Other country than Japan)
L: During AF search
H: In other case than the above (Normal case)
4
NC
O
Not used (Japan)
Output is fi xed to L, Terminal OPEN
5
AVREF1
Power supply terminal
BU3.3V connection
6
CODEC_CSB
O
CODEC chip select control
L: Selected, H: Unselected
7
FLMD0_CNT
O
Control FLMD0 at pin 8 while re-writing the program
H: During re-writing DISC
L: Output is normally fi xed to L
8
FLASH_FLMD0
µ-com mode switching terminal
* FLASH re-writing terminal
w
H: When re-writing
L: Normally
9
VDD
Power supply terminal
BU3.3V connection
10
REGC
For regulator stabilization
4.7µF connection
11
VSS
GND terminal
GND connection
12
X1
Oscillation input
3.932160MHz
13
X2
Oscillation output
3.932160MHz
14
RESET
I
µ-com reset
Reset control from system µ-com
* Set to H while ACC OFF
Reset control from the writing writer
* Write while ACC OFF (plan)
e
L: Reset
H: Reset is cleared
15
XT1
Not used
Not used, GND connection
16
XT2
Not used
Not used, Open
17
ON_REQ
I
ON request from Sie-BUS
* Not used in the simplifi ed Sie-BUS
L: System ON request
H: Not requested
18
OFF_REQ
I
OFF request from Sie-BUS
* Not used in the simplifi ed Sie-BUS
L: System OFF request
H: Not requested
19
RDS_CLK
I
RDS clock input (Other country than Japan)
Interruption with noise removal
Normal input
19
NC
O
Not used (Japan)
Output is fi xed to L, Terminal OPEN
20
CODEC_ERR
I
CODEC error detection
H: Error, L: Normally, Turn on MUTE in the rear
stage within 5ms after detecting the error
* Because the IC error sustained period of time
is 5ms
21
DIR2_ERR
I
DIR2 error detection (Japan/HDD ripping)
H: Error, L: Normally
21
NC
O
Not used (Other country than Japan)
Output is fi xed to L, Terminal OPEN
22
FLASH_SI
I
SIO_0 or SIO_3
H or L: Writing in, L: Output is normally fi xed to L
23
FLASH_SO
O
SIO_0 or SIO_3
H or L: Writing in, L: Output is normally fi xed to L
24
FLASH_CLK
I
SIO_0 or SIO_3
H or L: Writing in, L: Output is normally fi xed to L
25
RDS_TXD
O
For debugging 9588bps
H: When debugging no communication,
Communication speed is 9588bps,
L: Output is normally fi xed to L
25
NC
O
Not used
Output is fi xed to L, Terminal OPEN