SI2401-FSR Silicon Laboratories Inc, SI2401-FSR Datasheet - Page 35

• Manufacturer Part Number: SI2401-FSR
• Description: Telecom Line Management ICs 2400b/s System Side 3rd Gen DAA Tech
• Manufacturer: Silicon Laboratories Inc
• Type: Integrated Global DAAr

Specifications of SI2401-FSR

• Product: Modem Module
• Supply Voltage (min): 3 V
• Supply Current: 15 mA
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 10 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-16
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7. S Registers
Any register not documented here is reserved and should not be written. Bold selection in bit-mapped registers
indicates default values.
*Note: These registers are explained in detail in the following section.
Register
S0C
S0D
S00
S01
S02
S03
S04
S05
S06
S07
S08
S09
S0E
S0F
S10
S12
S13
S15
S16
S17
“S”
S11
Register
Address
(hex)
0x0C
0x0D
0x0E
0x0F
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x10
0x11
0x12
0x13
0x15
0x16
0x17
OFFPD Duration of off-hook time (5/3 ms units) for pulse dialing.
ONPD
Name
BTON
BTOF
INTM
OFHI
INTS
CLW
MLC
MF1
MF2
MF3
TEC
TDT
ACL
MF4
DW
CW
DIT
NR
TD
Function
Number of rings before answer; 0 suppresses auto answer.
Number of seconds modem waits before dialing after going off-
hook (maximum of 109 seconds).
Number of seconds modem waits for a dial tone before hang-up
added to time specified by DW (maximum of 109 seconds).
Duration that the modem waits (53.33 ms units) after loss of car-
rier before hanging up.
Both duration and spacing (5/3 ms units) of DTMF dialed tones.
Duration of on-hook time (5/3 ms units) for pulse dialing.
This is a bit-mapped register.
This is a bit-mapped register.
This is a bit-mapped register.
This is a bit-mapped register.
This is a bit-mapped register.
Pulse dialing Interdigit time (10 ms units added to a minimum
time of 64 ms).
TIES escape character. Default = +.
TIES delay time (53.33 ms units).
This is a bit-mapped register.
Absolute Current Level. When S13[4] (OFHD) = 0
represents the absolute current threshold used by the off-hook
intrusion algorithm (1 mA units.)
This is a bit-mapped register.
This is a bit-mapped register.
Busy tone on. Time that the busy tone must be on (10 ms units)
for busy tone detector.
Busy tone off. Time that the busy tone must be off (10 ms units)
for busy tone detector.
Table 21. S-Register Summary
Rev. 1.0
*
*
*
*
*
*
*
*
b
, ACL
Si2401
Reset
0x0E
0x2B
0x00
0x02
0x03
0x30
0x18
0x24
0x06
0x00
0x00
0x00
0x00
0x46
0x13
0x04
0x00
0x10
0x04
0x32
0x32
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