Intermec Janus 2020 User Manual page 207

Method for Calculating the Two-Digit Hexadecimal Value for the UART FIFO Control Register (FCR)
7 6 5 4 3
NF
Two-digit hex value
Flag byte
2 1 0
Descriptions of each bit
0 to disable FIFO (16x450 mode)
1 to enable FIFO (16x550 mode)
0 does not reset
1 to reset receive FIFO
0 does not reset
1 to reset transmit FIFO
0 does a single transfer DMA
1 does a multiple transfer DMA that empties all of the FIFO
contents in one DMA session
Reserved (Always 0)
Reserved (Always 0)
Receiver trigger level. Indicates the number of bytes at which
the receive interrupt is generated.
7 6
0 0
1 0
0 1
1 1
BC
Networking the Reader
Number of bytes that generate
a receive interrupt
1
4
8
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