CP321 datasheet(75/144 Pages) ETC2

75 / 144 page

CP321

Configuration

ID 24977, Rev. 02

Page 4 - 17

4.4.2

UART B

The following table indicate the address mapping of the UART B. For a more detailed descrip-

tion please refer to the EXAR XR16C2850 DUART manual.

Table 4-18:UART B General Register Set

READ MODE

WRITE MODE

ADDRESS

Receive Holding Register

Transmit Holding Register

0xFFE0 0008

n/a

Interrupt Enable Register

0xFFE0 0009

Interrupt Status Register

FIFO Control Register

0xFFE0 000A

n/a

Line Control Register

0xFFE0 000B

n/a

Modem Control Register

0xFFE0 000C

Line Status Register

n/a

0xFFE0 000D

Modem Status Register

n/a

0xFFE0 000E

Scratchpad Register

0xFFE0 000F

Table 4-19:UART B Baud Rate Register Set

READ MODE

WRITE MODE

ADDRESS

LSB of divisor latch

0xFFE0 0008

MSB of divisor latch

0xFFE0 0009

Table 4-20:UART B Enhanced Register Set

READ MODE

WRITE MODE

ADDRESS

Trigger Level Register

0xFFE0 0008

Feature Control Register

0xFFE0 0009

Enhanced Feature Register

0xFFE0 000A

Enhanced Mode Select Register

0xFFE0 000B

Xon-1

0xFFE0 000C

Xon-2

0xFFE0 000D

Xoff-1

0xFFE0 000E

Xoff-2

0xFFE0 000F

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