Reader Functionality
AYC-Fx4 and AYC-Gx4 family manual Page 21
Option 6: 6 Keys BCD and parity bits, 26-Bit Wiegand
Sends buffer of 6 keys, adds parity and sends a 26-Bit Binary-
Coded Decimal (BCD) message. Each key is a four bit equivalent
of the decimal number.
The keypad PIN code must be 6 key presses long. On the sixth key
press of the 6 digit PIN code, the data is sent across the Wiegand
Data lines as a BCD message.
If the entry of the 6 digit keypad PIN code is disrupted and no
number 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 6 digit keypad PIN code.
(EP) AAAA BBBB CCCC DDDD EEEE FFFF (OP)
Where:
EP = Even parity for first 12 bits.
OP = Odd parity for last 12 bits.
Option 7: Single Key, 3x4 Matrix Keypad (MD-P64)
This unique mode is intended to let the host controller scan the
AYC-Fx4/AYC-Gx4 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 AYC-
Fx4/AYC-Gx4 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.
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