Kenwood Ez700SR Service Manual page 9

MICROCOMPUTER'S TERMINAL DESCRIPTION
SUB MICROCOMPUTER : 70F3263GC3T5A or 703262GC301A (X34 : IC501)
Pin No. Pin Name
1 AVREF0
2 AVSS
3,4 NC
5 AVREF1
6 NC
7 SELF_MODE
8 FLMD0
9 VDD
10 REGC
11 VSS
12,13 X1,X2
14 RESET
15 NC
16 NC
17 SPAN
18 BUP
19 LX_CON_1
20 DRST
21 LX_REQ_S_2
22 LX_DATA_S_2
23 LX_DATA_M_2
24 LX_CLK_2
25 SR_TX
26 SR_RX
27 NC
28 AM_SW1
29 LX_CON_2
30 LX_REQ_M_2
31 LX_REQ_S_1
32 LX_MUTE_1
33 EVSS
34 EVDD
35 SDA
36 SCL
Module I/O
I ADC reference voltage
- ADC/DAC GND
Not used. O
I DAC reference voltage
Not used. O
Test&Debug I/O Self-write designation
Test&Debug I Flash Programming Mode
- Main power supply terminal
Power supply stabilization capacity
-
connection terminal
- GND
- Main clock terminal
I Reset terminal
Not used. - Sub-clock terminal
Not used. - Sub-clock terminal
HD Radio I SPAN selection input
Power supply I BU low detection
Boot request from system µ-com
LX_M I
Test&Debug I Used for N-Wire
LX_M I Communication request from slave unit
LX_M I Data from slave unit
LX_M O Data to slave unit
LX_M I/O LX BUS clock
SIRIUS O UART output to Sirius
SIRIUS I UART input from Sirius
Not used. I
HD Radio O DC/DC Switching Freq. Cont
LX_M O Boot request to slave unit
LX_M O Communication request to slave unit
O Communication request to system µ-com
LX_M
O Mute request to system µ-com
LX_M
GND
Main power supply terminal
Common I/O IIC data
Common O IIC clock
Ez700SR/Ez900HDS
Truth
Application
Value Table
u
Processing Operation Description
Connected to BU+3.3V with H/W.
Connected to GND with H/W.
L-output.
Connected to BU+3.3V with H/W.
L-output.
Normal : Input (In place of Hi-Z-output),
In self-mode : H-output
Normal : L-input, Program : H-input
Connected to BU+3.3V with H/W.
Connect 4.7µF.
Connected to GND with H/W.
Connect 5MHz X'tal.
H : Normal, L : Reset
Pull Down
Open
L : K-destination,
H : M-destination or equivalent
H : BU low, L : BU normal
H : slave unit ON, L : slave unit OFF
In combination with AM_SW2, frequency
is controlled.
H : slave unit ON, L : slave unit OFF
H : Mute ON, L : Mute OFF
Connected to GND with H/W.
Connected to BU+3.3V with H/W.
IIC data
IIC clock
9