2-6 (E)
VSR-2000A
2-6. Function of Switches/LEDs on Board
2-6-1. CCM-38A Board
Switches
n
Do not change the setting of the switches described as “Factory use only”.
Ref. No.
Address
Name
Description
Factory Setting
S1
(D-2)
Optional operation
Factory use only
setting switch 1
S51
(D-6)
JTAG circuit selector
CPU: CPU is included
PLD position
switch
in the circuit.
(Never change)
PLD : CPU is not included
in the circuit.
S52
(D-6)
JTAG condition switch
B1 :
Input signal selector to
CPU from the JTAG
circuit TRST signal
ON :
JTAG DISABLE
OFF : JTAG ENABLE
(Never change)
B2-4 : Not used
S101
(D-4)
CPU clock frequency
Source oscillator of CPU is
HI position
setting switch 1
selected by the combination
(Never change)
of S101 and S102.
S102
(D-4)
CPU clock frequency
LO position
setting switch 2
(Never change)
S151
(E-6)
Optional operation
Factory use only
setting switch 2
2-6. Function of Switches/LEDs on Board
Side A (Component side)
1
A
B
C
D
E
F
2
3
4
5
6
D106
D105
ND201
S51
S52
S151
S152
D101
D104
D103
D102
S156
S155
S154
S153
D257
D258
D259
D260
D261
D262
S101
S102
S1
D552
D551
D554
D553
S201
CN204
1
ON
2
3
4
1
ON
2
3
4
1
ON
2
3
4
5
6
7
8
