XR16V2652IL32 datasheet(11/48 Pages) EXAR

Part #	XR16V2652IL32

Description	HIGH PERFORMANCE DUART WITH 32-BYTE FIFO

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Manufacturer	EXAR [Exar Corporation]

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XR16V2652

11

REV. 1.0.2

HIGH PERFORMANCE DUART WITH 32-BYTE FIFO

FIGURE 5. BAUD RATE GENERATOR

TABLE 5: TYPICAL DATA RATES WITH A 24 MHZ CRYSTAL OR EXTERNAL CLOCK AT 16X SAMPLING

Required

Output Data

Rate

DIVISOR FOR

16x Clock

(Decimal)

DIVISOR

OBTAINABLE IN

V2652

DLM PROGRAM

VALUE (HEX)

DLL PROGRAM

VALUE (HEX)

DLD PROGRAM

VALUE (HEX)

DATA ERROR

RATE (%)

400

3750

E

A6

0

2400

625

2

71

0

4800

312.5

312 8/16

1

38

8

0

9600

156.25

156 4/16

0

9C

4

0

10000

150

0

96

0

19200

78.125

78 2/16

0

4E

2

0

25000

60

0

3C

0

28800

52.0833

52 1/16

0

34

1

0.04

38400

39.0625

39 1/16

0

27

1

0

50000

30

0

1E

0

57600

26.0417

26 1/16

0

1A

1

0.08

75000

20

0

14

0

100000

15

0

F

0

115200

13.0208

13

0

D

0

0.16

153600

9.7656

9 12/16

0

9

C

0.16

200000

7.5

7 8/16

0

7

8

0

225000

6.6667

6 11/16

0

6

B

0.31

230400

6.5104

6 8/16

0

6

8

0.16

250000

6

0

6

0

300000

5

0

5

0

400000

3.75

3 12/16

0

3

C

0

460800

3.2552

3 4/16

0

3

4

0.16

500000

3

0

3

0

750000

2

0

2

0

921600

1.6276

1 10/16

0

1

A

0.16

1000000

1.5

1 8/16

0

1

8

0

XTAL1

XTAL2

Crystal

Osc/

Buffer

MCR Bit-7=0

(default)

MCR Bit-7=1

DLL, DLM and DLD

Registers

Prescaler

Divide by 1

Prescaler

Divide by 4

16X or 8X or 4X

Sampling

Rate Clock

to Transmitter

and Receiver

To Other

Channel

Fractional Baud

Rate Generator

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XR16V2652IL32 Datasheet(PDF) 11 Page - Exar Corporation

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