Kenwood FZDA07ELEF2 Service Manual page 19

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