Keypad Programming Instructions
AY-T6350 Installation and Programming Manual 23
5.5.1 Wiegand 26-Bit
In this mode, 3 bytes of the CSN are transmitted in Wiegand 26-Bit
format. Two parity bits are added. An even parity bit is sent first,
followed by three bytes card data than followed by odd parity bit.
The fourth byte of the cards serial number is not transmitted.
(EP) AAAA AAAA AAAA AAAA AAAA AAAA (OP)
Where: EP = Even parity for first 12 bits
OP = Odd parity for last 12 bits
A = 3 bytes code generated from card data
5.5.2 Clock and Data
In this mode, 4 bytes of the CSN are transmitted in Clock&Data
format.
5.5.3 Wiegand Card + PIN Transmission Format
This unique mode is intended to let host controllers get card and
keypad data simultaneously. This option overrules the selected
Keypad Transmission Format and sends the keypad data as described
below.
The output data turns into a virtual Wiegand 52-bit – 26-bit card data
followed by a 26-bit keypad data.
After a card is presented to the reader, the LED starts to flash white to
indicate that the reader is waiting for the PIN code.
The entered PIN code is buffered up to 5 keys and outputs keypad
data with a Facility code much like Option 5 (1 to 5 Keys + Facility
Code, Wiegand 26-Bit) (see Section 5.4.5).
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