SI2400-FS Silicon Laboratories Inc, SI2400-FS Datasheet - Page 73

• Manufacturer Part Number: SI2400-FS
• Description: 2400 BPS ISOMODEM EM SYSTEM-SIDE
• Manufacturer: Silicon Laboratories Inc
• Type: Chipsetr

Specifications of SI2400-FS

• Package / Case: 16-SOIC (3.9mm Width)
• Data Format: V.21, V.22, V.23, Bell 103, Bell 212A
• Baud Rates: 2.4k
• Interface: UART
• Voltage - Supply: 3 V ~ 5.25 V
• Mounting Type: Surface Mount
• Product: Modem Module
• Supply Voltage (min): 3 V
• Supply Current: 28 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1166 - BOARD EVAL FOR SI2400 ISOMODEM
• Lead Free Status / Rohs Status: Supplier Unconfirmed

SF4 (DAA4). DAA Low Level Functions 4
Reset settings = 0000_1111
Name
Type
Bit
6:4
3:2
1:0
Bit
7
SQLH
R/W
D7
Name
SQLH
ARG
ARL
ATL
D6
Ring Squelch.
If the host implements a manual ring detect (bypassing the Si2400 micro), this bit must
be set, then cleared following a polarity reversal detection. Used to quickly recover offset
on RNG1/2 pins after polarity reversal.
0 = Normal.
1 = Squelch.
Analog Receive Gain.
Off-Hook
000 = 0 dB gain 000 = 7 dB
001 = 3 dB gain
010 = 6 dB gain
011 = 9 dB gain
1xx = 12 dB gain
AOUT Receive—Path Level.
DAA receive path signal AOUT gain.
00 = 0 dB
01 = –6 dB
10 = –12 dB*
11 = Mute
AOUT Transmit—Path Level.
DAA transmit path signal AOUT gain.
00 = –18 dB
01 = –24 dB
10 = –30 dB*
11 = Mute
b
(0x0F)
ARG
R/W
D5
D4
D3
On-Hook
001 = 6 dB
010 = 4.8 dB
011 = 3.5 dB
1xx = 2.0 dB
Rev. 1.3
ARL
R/W
D2
Function
D1
R/W
ATL
D0
Si2400
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