User's Manual

Reader Functionality
AY-H6355BT Installation and User Manual 27
Option 1: Wiegand 26-Bit
In this mode, 3 LSB bytes from the card serial number (UID) are
transmitted in Wiegand 26-Bit format. Two parity bits are added. An
even parity bit is sent first, followed by three bytes of card data, and
by an odd parity bit.
(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
Option 2: Clock and Data
In this mode, up to 6 bytes of the card serial number are transmitted
in Clock & Data format.
Option 3: Wiegand 32-Bit
In this mode, 4 LSB bytes from the card serial number are transmitted in
Wiegand 32-Bit format. No parity bits are added.
AAAA AAAA BBBB BBBB CCCC CCCC DDDD DDDD
Where: A = 4
th
(MSB) byte of card serial number
B = 3
rd
byte of card serial number
C = 2
nd
byte of card serial number
D = 1
st
(LSB) byte of card serial number
Option 4: Wiegand 32-Bit Reversed Byte
In this mode, 4 LSB bytes from card serial number are transmitted in Wiegand
32-bit format. Bytes are sent in reversed order. The LSB part of the card serial
number is sent first and the MSB byte is sent last. No parity bits are added.
DDDD DDDD BBBB BBBB CCCC CCCC AAAA AAAA