SI2493-D-FS Silicon Laboratories Inc, SI2493-D-FS Datasheet - Page 17

• Manufacturer Part Number: SI2493-D-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2493-D-FS

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2.2. System Interface
The ISOmodem can be connected to a host processor through a UART, SPI or parallel interface. Connection to the
chip requires low-voltage CMOS signal levels from the host and any other circuitry interfacing directly. The
following sections describe the digital interface options in detail.
2.2.1. Interface Selection
The interface is selected during reset, as described in "2.1. Resetting the Device". Tables 12, 13, and 14 show the
functions of the affected pins for possible interface modes for 16-, 24- and 38-pin packages, respectively.
Table 13. Pin Functions vs. Interface Mode (TSSOP-24)
Pin #
Table 12. Pin Functions vs. Interface Mode (SOIC-16)
Pin #
10
15
16
17
18
22
23
24
11
2
3
8
9
14
15
16
11
3
5
6
7
CLKOUT (SSI)
FSYNC (SSI)
UART Mode
SDO (SSI)
SDI (SSI)
AOUT
DCD
RXD
ESC
RTS
TXD
CTS
INT
RI
UART Mode
RXD
DCD
TXD
CTS
ESC
RTS
INT
RI
Rev. 1.3
CLKOUT (SSI)
FSYNC (SSI)
SDO (SSI)
SPI Mode
SDI (SSI)
AOUT
SCLK
MISO
MOSI
DCD
ESC
INT
SS
RI
SPI Mode
SCLK
MISO
MOSI
DCD
ESC
Parallel Mode
INT
SS
RI
WR
INT
RD
CS
D6
A0
D7
D0
D1
D2
D3
D4
D5
AN93
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