SI2493-C-FS Silicon Laboratories Inc, SI2493-C-FS Datasheet - Page 107

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

Specifications of SI2493-C-FS

• Mfg Application Notes: SI2493/57/34/15/04, Appl Note AN93
• Data Format: V.21, V.22, V.23, V.29, V.32, V.34, V.90, V.92, Bell 103, Bell 212A
• Baud Rates: 56k
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AN93
3.5.1. PCM/Voice Mode (24-Pin TSSOP Only)
The Si3000 is used in conjunction with the Si2493/57/34/15/04 to transmit and receive 16-bit voice samples to and
from telephone lines as shown in Figure 21.
AT commands
HOST
2- wire
Responses
Si2457 Modem
NexGen
FSYNC
DAA
SDO
CLKOUT
SDI
TDMA Interface
SDO
SDI
FSYNC
MCLK
Handset
Si3000 Voice Codec
Figure 21. Voice Mode Block Diagram
Figure 22 shows the actual circuit connection between the Si2493/57/34/15/04 and the Si3000.
Rev. 0.9
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