Silicon Laboratories Si2457 Manual de usuario descargar pdf (Pagina 19)

Si2493/57/34/15/04

Global ISOmodem-EVB

Rev. 0.7 19

RS-232, Female,

Front View

USB

Keep Very Close

RXD_232

CTS_232

RD_232

TXD_232

DTR_232

DSR_232

RTS_232

CD_232

RXD_T

CTS_T

DSR_T

CD_T

RI_T

TXD_T

RTS_T

DTR_T

RI_U

CD_U

DSR_U

TXD_U

RXD_U

CTS_U

RTS_U

DTR_U

+3.3V

+3.3V

VCC_USB

DN5 15VDN5 15V

C58

0.1uF

C58

0.1uF

R112

10K

R112

10K

DN4 15VDN4 15V

DN1 15VDN1 15V

FB8

600 Ohm

BLM18AG601SN1

FB8

600 Ohm

BLM18AG601SN1

R110 10KR110 10K

U11

MAX3237

U11

MAX3237

C2+

1

C2-

3

C1+

28

C1-

25

V+

27

V-

4

T1IN

24

T2IN

23

T3IN

22

T4IN

19

T5IN

17

R1OUTB

16

R1OUT

21

R2OUT

20

R3OUT

18

EN

13

GND

2

T1OUT

5

T2OUT

6

T3OUT

7

T4OUT

10

T5OUT

12

VCC

26

R1IN

8

R2IN

9

R3IN

11

MBAUD

15

SHDN

14

C62

0.1uF

C62

0.1uF

DN8 15VDN8 15V

C53

0.1uF

C53

0.1uF

DN3 15VDN3 15V

C52

560pF

C52

560pF

R109 10KR109 10K

J10

DB9

J10

DB9

CD(O)

1

RXD(O)

2

TXD(I)

3

DTR(I)

4

SG

5

DSR(O)

6

RTS(I)

7

CTS(O)

8

RD(O)

9

MH

10

MH

11

D14D14

C63

0.1uF

C63

0.1uF

DN7 15VDN7 15V

DN2 15VDN2 15V

R111 10KR111 10K

U12

CP2102

U12

CP2102

REGIN

7

VDD

6

GND

3

VBUS

8

D-

5

D+

4

CTS

23

RTS

24

RXD

25

TXD

26

DSR

27

DTR

28

DCD

1

RI

2

SUSPEND

11

SUSPEND

12

RST

9

GND

EPAD

D15D15

C57 0.1uFC57 0.1uF

C61

0.1uF

C61

0.1uF

J11

USB Type B

J11

USB Type B

+V

1

D-

2

D+

3

GND

4

SH

5

SH

6

C59

0.1uF

C59

0.1uF

C56 0.1uFC56 0.1uF

DN6 15VDN6 15V

FB9

600 Ohm

BLM18AG601SN1

FB9

600 Ohm

BLM18AG601SN1

R108

0

NOPOP

R108

0

NOPOP

C54

1uF

C54

1uF

C60

0.01uF

C60

0.01uF

C55

1uF

C55

1uF

Figure 13. RS-232 Interface and USB Interface Schematic

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 36 37

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