SI2434-D-FS Silicon Laboratories Inc, SI2434-D-FS Datasheet - Page 47

• Manufacturer Part Number: SI2434-D-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2434-D-FS

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

8. Pin Descriptions: Si2457/34/15/04 (24-Pin Option)
Pin #
5, 21
6, 20
7,19
1
2
3
4
8
CLKOUT/EECS/
CLKIN/XTALI
SS/RTS/D7
FSYNC/D6
VDA, VDB
Pin Name
XTALO
VD3.3
GND
A0
Clock Input/Crystal Oscillator Pin.
Provides support for parallel resonant AT cut crystals. A 4.9152 MHz or
32.768 kHz crystal or a 32.768 kHz or 4.9152 or 27 MHz clock on XTALI is
required.
Crystal Oscillator Pin.
Serves as the output of the crystal amplifier.
Clock Output/EEPROM Chip Select/Address Bit 0.
Clock output in serial mode. Active low read/write enable for SPI EEPROM in
serial mode when pin 4 is pulled low during powerup. Address Enable in parallel
mode.
Frame Sync/Data Bit.
Frame Sync output to codec in serial mode. Bidirectional parallel bus data bit 6 in
parallel mode.
Digital Supply Voltage.
Provides the 3.3 V supply voltage to the Si2457/34/15/04.
Ground.
Connects to the system digital ground.
Regulator Voltage Reference.
Connects to an external capacitor and serves as the reference for the internal
voltage regulator.
SPI Slave Select/Request to Send/Data Bit.
Active low slave select in SPI mode.
Active low request to send input used for flow control in UART mode. Bidirec-
tional parallel bus data bit 7 in parallel mode.
CLKOUT/EECS/A0
MISO/RXD/RD
MOSI/TXD/WR
SCLK/CTS/CS
CLKIN/XTALI
SS/RTS/D7
FSYNC/D6
XTALO
RESET
VD3.3
GND
VDA
Si2457/34/15/04
(24-Pin Option)
1
10
11
12
2
3
4
5
6
7
8
9
Rev. 1.3
24
23
22
20
19
18
17
16
15
14
13
21
ESC/D3
DCD/D4
VD3.3
GND
SDI/EESD/D2
RI/D1
INT/DO
SDO/EECLK/D5
VDB
AOUT/INT
C1A
C2A
Description
Si2457/34/15/04
47