Sony IT-M708 Operation Manual page 21

CPU timer
CPU clock frequency
Data transmission career
Career for Extension
Key Scan
KS
0
KI
0 1
1 2
2 3
3 LINE1
4 M1
5 M9
ERASE/
6
CLEAR
M1-14 SPEED DIAL 1-14
KS 0-7 SCAN OUTPUT
KI 0-6 KEY INPUT
If some key is depressed, some port of KI and KS is connected, and CPU recognizes which key is
depressed.
4.5 MHz
TM5 is used.
1/10 of main clock frequency
Input clock
Output clock 450KHz
TM6 is used.
1/16 or 1/14 of main clock frequency
Input clock 4.5MHz (main clock frequency)
Output clock 281.25KHz when sending signal
Output clock 321.43KHz when receiving signal
1 2
4 7
5 8
6 9
LINE2 LINE3
M2 M3
M10 M11
JOG FLASH
P50-57 ACTIVE "L"
P40-46 ACTIVE "L"
4.5MHz (main clock frequency)
3 4
* VOL+
SPEAKER
0
PHONE
# HOLD
LINE4 INTCOM
M4 M5
M12 M13
LOW
PROGRAM
TM: Timer
5 6
VOL- MUTE
PAGE ALL PAGE
Do NOT
DISTURB
REDIAL
M6 M7
M14
7
CONF
TRANSFER
BUSY
REDIAL
M8
21