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JANUS? 2020 Hand-Held Computer (4MB) - Intermec

JANUS? 2020 Hand-Held Computer (4MB) - Intermec

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NF BC Networking the Reader<br />

Method for Calculating the Two-Digit Hexadecimal Value for the UART FIFO Control Register (FCR)<br />

7 6 5 4 3 2 1 0<br />

Two-digit hex value<br />

Flag byte<br />

Descriptions of each bit<br />

0 to disable FIFO (16x450 mode)<br />

1 to enable FIFO (16x550 mode)<br />

0 does not reset<br />

1 to reset receive FIFO<br />

0 does not reset<br />

1 to reset transmit FIFO<br />

0 does a single transfer DMA<br />

1 does a multiple transfer DMA that empties all of the FIFO<br />

contents in one DMA session<br />

Reserved (Always 0)<br />

Reserved (Always 0)<br />

6<br />

Receiver trigger level. Indicates the number of bytes at which<br />

the receive interrupt is generated.<br />

7 6<br />

Number of bytes that generate<br />

a receive interrupt<br />

0 0 1<br />

1 0 4<br />

0 1 8<br />

1 1 14<br />

<strong>2020</strong>U.117<br />

6-21

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