SI2401-FSR Silicon Laboratories Inc, SI2401-FSR Datasheet - Page 38

• 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

Si2401
38
*Note: These registers are explained in detail in the following section.
Register
SDB
S3C
SDF
SEB
S37
S39
S3A
S62
S82
SE0
SE1
SE2
SE3
SE4
SE5
SE5
SE5
SE5
SE6
SE6
SE6
SE8
“S”
Register
Address
0xDB
(hex)
0x3C
0xDF
0xEB
0x3A
0xE0
0xE1
0xE2
0xE3
0xE4
0xE5
0xE5
0xE5
0xE5
0xE6
0xE6
0xE6
0xE8
0x37
0x39
0x62
0x82
DSPR4
GPIO1
GPIO2
DGSR
DADH
Name
DADL
DSP1
DSP2
DSP3
CIDG
CDR
CDT
GPD
DDH
ATD
DDL
TPD
LVS
CF1
CF5
RC
IST
Table 21. S-Register Summary (Continued)
Function
Carrier detect return. Minimum length of time that a carrier must
return and be detected in order to be recognized after a carrier
loss is detected
(5/3 ms units).
Carrier detect timeout. Amount of time modem waits for carrier
detect before aborting call (1 second units).
Delay between going off-hook and answer tone generation when
in answer mode (53.33 ms units).
This is a bit-mapped register.
This is a bit-mapped register.
This is a bit-mapped register.
Line Voltage Status. Eight bit signed, 2s complement number
representing the tip-ring voltage. Each bit represents 1 volt.
Polarity of the voltage is represented by the MSB (sign bit).
0000_0000 = Measured voltage is < 3 V.
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.
This is a bit-mapped register.
(SE8 = 0x00) Write only definition. DSP register address lower
bits [7:0].
(SE8 = 0x01) Write only definition. DSP data word lower bits
[7:0].
(SE8 = 0x02) Read only definition. This is a bit-mapped register.
(SE8 = 0x02) Write only definition. This is a bit-mapped register.
(SE8 = 0x00) Write only definition. DSP register address upper
bits [15:8].
(SE8 = 0x01) Write only definition. DSP data word upper bits
[13:8]
(SE8 = 0x02) Write only definition. This is a bit-mapped register.
Set the mode to define E5 and E6 for low-level DSP control.
This is a bit-mapped register.
*
*
Rev. 1.0
*
*
*
*
*
*
*
*
*
*
1
1
1
Reset
0x3C
0x0C
0x0E
0x20
0x29
0x01
0x41
0x08
0x22
0x00
0x00
0x00