8
FZDA07ELEF2/EREF2/MRHF2
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC64
IE-BUS interface driver/receiver
Sie-BUS communication interface
IC65
Reset logic IC
OR logic of power reduction, system µ-com reset request and fl ash writer
reset request
IC66
Level shift logic IC
Level-shifting (3.3V
→
5V)
For hardware mute
OR logic of reset and momentary power down detection
IC67
Flash writing SW
Transfer the data from the writer when the µ-com FLMD0_CNT is L
Q1
Transistor for controlling the external radio ANT power
supply
ON when ACC_ON
Q2
Transistor for driving the external radio ANT power supply
Output P-ANT power supply
Q3
Transistor for driving the external radio ANT power supply
ON when Q1 is ON
Q4
Transistor for external radio ANT power supply
shortage protection circuit
ON when Q9 and Q51 are turned on and when P-ANT output is shorted
Q5
Bu8V power supply transistor
Input: +B, Output BU8V power supply
Q6
Bu8V power supply transistor
On when +B is on
Q7
Bu5V power supply transistor
Input: +B, Output BU5V power supply
Q8
Bu5V power supply transistor
On when +B is on
Q9,10
Transistor for external radio ANT power supply
shortage protection circuit
Turn ON to activate the protection circuit when system µ-com TUN_ANTC
output is H
Q11
Transistor to control the system board power supply SW ON when the system µ-com P_ON output is H
Q12
System board power supply SW
P_ON: ON when Q11 is ON while the output is H
Q13
Bu8V power supply transistor
Input: +B, Output BU8V power supply
Q14
Bu5V power supply transistor
Input: +B, Output BU5V power supply
Q16
Transistor for detecting abnormal voltage
Protection for the abnormal condition when the output from IC5 is exceeding 10V
Q17
Transistor for detecting abnormal voltage
Protection for the abnormal condition when the output from IC4 is exceeding 10V
Q50
Mid-point circuit power supply SW
ON when A_PON
Q51,52
Transistor for external radio ANT power supply
shortage protection circuit
Is turned On and activates the protection circuit when the system µ-com
P_ON
Q53
Digital transistor for BU5V switch
ON when µ-com A_PON
Q54
Transistor for BU3.3V switch
ON when µ-com A_PON
Q55
Digital transistor for BU5V switch control
ON when µ-com A_PON
Q56
Digital transistor for BU3.3V switch control
ON when µ-com A_PON
Q57
Transistor for BU detection
Output L when the BU voltage is 9.8V or more
Q58
Digital transistor for over voltage detection
Detect the over voltage when the BU voltage is 19.6V or more
Q59
ACC detection transistor
Output L when the ACC voltage is 9.8V or more
Q60
Control 1/2 Vcc and distributor power supply circuits
Detect APON5V and turn ON 1/2 Vcc circuit and distributor
Q100
FET for FM diversity IC input S meter switch
OFF when AM
Q101
Digital transistor for AM power supply switch
ON when AM
Q102
Digital transistor for IF counter detection
L: When station is found, H: When station is not found
Q104
Digital transistor for FM diversity IC power supply
switch control
ON when AM
Q106
Digital transistor for AM power supply switch control
ON when AM
Q108
Digital transistor for FM diversity IC power supply switch OFF when AM
COMPONENTS DESCRIPTION