Fostex G16 - Page 27

CPU SELECT (I)
3,4
follows:
Pin 3 = HIGH
Pin 4 = HIGH
(Pins 3 and 4 are connected to the
base lead of U13 and U14, and these
will be set to HIGH level at the instant
power is switched ON.)
NR OUT (O)
14
This is connected to anode pin of the
“ NR OFF ” LED (D291) and this LED
will be lit when a LOW is output, and
extinguished when a HIGH is output
(This is not lit by dynamic scan.).
DIGIT 1 - 8 (0)
41 -48
Refer to circuit diagram for
connections.
DIGIT 9 — 12(0)
15 - 18
SEGMENT 0-11(0)
59-64
1 — 6
SEGMENT 12-23 (0)
49-64
7-10
RESET (I) 22
This is the reset input pin and requires
a longer than lOpsec. LOW input for
resetting.
XI,X2
25,24
The ceramic resonator connecting pins
for the CPU internal oscillator circuit.
(12 MHz)
Vdd
58
Power supply pin. (+5V)
Vss
26
Ground pin.
ERROR
11
When a receiving error occurs at receiv 
ing serial data from the main unit, a
HIGH is output. This HIGH output time
is in two types.
(1) (2)
1 ,9ms
J V
nv
1
40//S
U V
•
p
The following waveform will be output
when the CPU cannot determine
whether it should function as the
Connector Board CPU or the
Controller CPU. When CPU
24