This unique mode is intended to let the host controller scan the AY-
Q54’s keypad while still keeping the proximity card readers 26-Bit
Wiegand or Clock & Data formats active.
An optional interface board must be used between the AY-Q54 and
the host system. Each key press is immediately sent on DATA0 as
an ASCII character at a baud rate of 9600 bits per second.
When a key is pressed DATA1 is pulled “low” until the key is
released at which point DATA1 will be set to “high”. This allows the
controller to detect the duration of the key press.
The MD-P64 interface unit outputs the data received to 7 outputs
emulating a keyboard. The interface unit will not effect any data that
it receives from the proximity reader wether it is 26-Bit Wiegand or
Clock & Data.
Key pressed = ASCII Value
0 = ‘0’ ( 0x30 hex )
6 = ‘6’ ( 0x36 hex )
1 = ‘1’ ( 0x31 hex )
7 = ‘7’ ( 0x37 hex )
2 = ‘2’ ( 0x32 hex )
8 = ‘8’ ( 0x38 hex )
3 = ‘3’ ( 0x33 hex )
9 = ‘9’ ( 0x39 hex )
4 = ‘4’ ( 0x34 hex )
= ‘ ’ ( 0x2A hex )
5 = ‘5’ ( 0x35 hex )
# = ‘#’ ( 0x23 hex )
Buffers up to 8 keys and outputs keypad data without a facility code
like standard Clock and Data card output.
The keypad PIN code can be one to eight digits long. The PIN code
length is selected while programming the reader for Option 8. The
reader will transmit the data when it receives the last key press of
the PIN code. The data is sent across the two data output lines as
binary data in Clock & Data format.
Single Key, 3x4 Matrix Keypad (MD-P64)
1 to 8 Keys BCD, Clock & Data
If the “ “ key or the “ “ key are pressed during PIN code entry, the
keypad will clear the PIN code entry buffer, generate a beep and is
ready to receive a new keypad PIN code.
If the entry of the digit keypad PIN code is disrupted and no number
key or “ ” key is pressed within 5 seconds, the keypad will clear the
PIN code entry buffer, generate a medium length beep and is ready
to receive a new keypad PIN code.
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OPTION 7
OPTION 8
