S E R I A L C O N T RO L M O D U L E : U A RT

Receive Character-Based Flow Control register

The Receive Character Match Control registers configure the receive character match control logic. Each UART module has five Receive Character Match Control registers.

Register

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EN

 

 

Not used

 

 

 

 

 

 

 

VALUE

 

 

 

 

 

ABLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VALUE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Register bit

assignment

Bits

Access

Mnemonic

Reset

Description

 

 

 

 

 

Enable character match

 

D31

R/W

ENABLE

0

 

 

 

 

 

Write a 1 to enable the receive character match control

 

 

 

 

 

logic.

 

 

 

 

 

 

 

D30:24

R

Not used

0x0

Write this field to 0.

 

 

 

 

 

 

 

D23:16

R/W

MASK

0x0

Mask

 

 

 

 

 

Allows you to not include specific bits in the receive

 

 

 

 

 

character match operation. Writing 1 masks off the bit in

 

 

 

 

 

the specified position.

 

 

 

 

 

Bit positions that are not used should always be masked.

 

 

 

 

 

For example, bit positions 9 through 12 should always be

 

 

 

 

 

masked for 8-bit characters.

 

 

 

 

 

 

 

D15:08

R

Not used

0x0

Write this field to 0.

 

 

 

 

 

 

 

D07:00

R/W

DATA

0x0

Data

 

 

 

 

 

Allows you to specify the receive characters to match

 

 

 

 

 

against.

 

 

 

 

 

 

R e c e i v e C h a r a c t e r - B a s e d F l o w C o n t r o l r e g i s t e r

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Address: 9001_1028 / 9001_9028 / 9002_1028 / 9002_9028

The Receive Character-Based Flow Control register lets you define the UART module’s receive character-based flow control operation. Use this register in conjunction with the Receive Character Match Control registers to define the flow control characters. If enabled, this function’s output is wired to the UART module instead of the CTS signal.

400Hardware Reference NS9215

Page 400
Image 400
Digi NS9215 manual Enable character match, Mask, Data

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