Pin No.Pin nameI/ODescription
LTR signal output. At LTR oscillating : 5.3VOutput 80Hz for
46LTR-OUTO
At the other : 5.3Vthree seconds.
47REC-OUTODICT, TEL-REC control output. At DICT, TEL-REC : O H � At the other : O L �
48TEL-OUTOTEL-REC control output. At TEL-REC : O H � At the other : O L �
49ALM-OUTOAlarm output. At alarm oscillating : 5.3V2.05 kHz
50 � 53KIN 0 � KIN 3Ikey scan input.
54VDD�Positiv power source terminal of the microcomputer.
55XT1IMicrocomputer operation mode selection input. (Connect to VDD).
56XT2�Not used (OPEN).
57NC�Not used. Connect to VDD
58X1IInput for clock oscillation (4.19MHz).
59X2OOutput for clock oscillation (4.19MHz).
���������������HU-LISTEN key input. At LISTEN key-in of the hand control unit (HU-80) : O L �
60HU-LIS-INI
At the other : O H �
61BS-INIHU-BS key input. At BS key-in of the hand unit (HU-80) : O L � At the other : O H �
62PB-OUTOPlayback control output. At LISTEN : O H � At the other : O L �
�������������
63MUTE-OUTOAmplifier mute output. At LISTEN, DICT, TEL-REC : O H � At the other : O L �
HU-FS key input. At FS key-in of the hand control unit (HU-80) : O L �
64FS-INI
At the other : O H �
Foot switch LISTEN key input. At LISTEN key-in of the foot control unit (FS-75) : O L �
65PR-INIAt the other : O H �
66SEC-IN�Not used (Connect to VDD).
��������HU-LTR key input. At LTR key-in of the hand control unit (HU-80) : O L �
67LTR-INI
At the other : O H �
��������������
68RESETIMicrocomputer reset input. Normal : O H �
69 � 80S0 � S11�Not used (OPEN).
� 20 � |
ACEC
