Silicon Laboratories Si2457 Manuale Utente Scaricare il pdf (Pagina 12)

Si2493/57/34/15/04

Global ISOmodem-EVB

12 Rev. 0.7

3. Design

The following sections contain the schematics, bill of materials, and layout for the Si2493/57/34/15/04 including the

daughter card and motherboard.

These components are for

internal Silabs use only.

:LUHVFRPPRQWR

SLQSDUWV

R103 R106R101

No No

No Yes

NoNo

No Yes

PKG_16.11 & PKG_24.15

PKG_16.3 & PKG_24.4

PKG_16.15 & PKG_24.23

PKG_16.7 & PKG_24.11

PKG_24.16

R102

Yes

No Yes X

XNo

Yes

SPI 32 kHz

SPI 27 MHz

SPI 4.9252 MHz

Pin11 Pin3 Pin15Pin7

Pin15 Pin23Pin11

R104 R106R101 R102

No Yes

Yes

Pin16

16 pin sys side strapping table

UART 4.9152 MHz

UART 27 MHz

UART 32 kHz Parallel

PKG_24.17

R105

Pin17

Parallel

27 Mhz

4.9152 MHz

SPI

No Yes

Yes 27 Mhz

Yes X 4.9152 MHz

32.768 kHzNo No

No No UARTNo Yes 32.768 kHzX

No No UARTNo No No

No No UARTNo No Yes

4.9152 MHz

27 Mhz

24 pin system side strapping table

<<%<DUHDOWHUQDWHIRRWSULQWVDQGIUHTXHQFLHV

7KH9DOXHVRI&&YDU\6HH7KH%20

2QO\RQH6\VWHPVLGHSDUWLV

VROGHUHGDWWLPH8RU8

CTSb AOUT_INTb INTb RIb DCDb

CTSb AOUT_INTb FSYNCH(RI) DCDb

SDO_EECLK_RTSb

DCDb

ESC

AOUT_INTb

RXD

RESETb

XTALI

XTALO

RXD

RTSb

RESETb

DCDb

FSYNCH

RTSb

INTb

ESC

RIb

SDI_EESD

AOUT_INTb

CLKOUT_EECSb_AO

TXD

CTSb

TXD

CTSb

FSYNCH

SDO_EECLK_RTSb

SDI_EESD

RIb

AOUT_INTb

FSYNCH

INTb

ESC

DCDb

RIb

SDI_EESD

VDA

XTALO

XTALI

XTALO

AOUT_INTb

CTSb

DCDb

FSYNCH

INTb

RIb

VDA

VDB

RXD

TXD

CTSb

XTALI

RESETb

C1A

C2A

C1A

C2A

VDD

R101 10KR101 10K

C41 33pFC41 33pF

R121 NIR121 NI

R18 1.2KR18 1.2K

R111 200R111 200

R120 NIR120 NI

FB5FB5

C51

0.22uF

C51

0.22uF

R104 10KR104 10K

R102 10KR102 10K

C56

0.1uF

C56

0.1uF

R103 10KR103 10K

C52

0.1uF

C52

0.1uF

R105 10KR105 10K

R112 200R112 200

U13

Si24xx-16 pin

U13

Si24xx-16 pin

CLKIN/XTALI

XTALO

RIb

VDD3.3

RXD_SPI_MISO

TXD_SPI_MOSI

CTSb_SPI_SCLK

RESET

C2A

C1A

INTb

GND

ESC

DCDb

RTSb_SPI_CSb

SOCKET 8x2

C53

0.22uF

C53

0.22uF

C40 33pFC40 33pF

C55

0.1uF

C55

0.1uF

C54

1uF

C54

1uF

27 MHz

GND

VCC

OUT

C50

0.1uF

C50

0.1uF

R106 10KR106 10K

R110 200R110 200

Y1B

32.768KHz

Y1B

32.768KHz

U12

Si2493

U12

Si2493

CLKIN/XTALI

XTALO

CLKOUT/EECSb/A0

FSYNCH/D6

VD3.3

GND

VDA

RTSb/SPI_CSb/D7

VDB

GND

VD 3.3

C2A

C1A

ESC/D3

DCDb/D4

SDO/EECLK/D5

CTS/SPI_SCLK/CSb

RXD/SPI_MISO/RDb

TXD/SPI_MOSI/WRb

RESET

RIb/D1

SDI/EESD/D2

AOUT/INTb

INTb/D0

4.9152MHz

Figure 8. i2493/57/34/15/04 Schematic

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 36 37

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