SI2401-FS Silicon Laboratories Inc, SI2401-FS Datasheet - Page 33

• Manufacturer Part Number: SI2401-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc
• Type: Integrated Global DAAr

Specifications of SI2401-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 ~ 3.6 V
• Mounting Type: Surface Mount
• Product: Modem Chip
• Supply Voltage (min): 3 V
• Supply Current: 15 mA
• Maximum Operating Temperature: + 100 C
• Minimum Operating Temperature: - 10 C
• Mounting Style: SMD/SMT
• Package: 16SOIC
• Main Category: Chipset
• Sub-category: ISOmodem
• Maximum Data Rate: 2.4 Kbps
• Typical Operating Supply Voltage: 3.3 V
• Power Supply Type: Digital
• Typical Supply Current: 10 mA
• Minimum Operating Supply Voltage: 3 V
• Maximum Operating Supply Voltage: 3.6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1167 - BOARD EVAL SI2401 UART INTERFACE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1095

*Note: These registers are explained in detail in the following section.
Register
S2A
S2B
S2C
S2D
S2E
S28
S29
S2F
S30
S31
S32
S34
S35
S36
“S”
Register
Address
(hex)
0x2C
0x2D
0x2A
0x2B
0x2E
0x2F
0x31
0x35
0x36
0x28
0x29
0x30
0x32
0x34
VTSOH V.22bis 2400 bps scrambled ones length high. Minimum length
OCDT
ARM1
Name
DTTO
FCDH
RSOL
RTCT
RATL
TASL
RSO
FCD
SDL
DTL
IS
Table 21. S-Register Summary (Continued)
of time for transmission of 2400 bps scrambled binary ones by a
call mode V.22bis modem (256 x 5/3 ms units added to the time
specified by VTSOL).
Intrusion suspend. When S82[2:1] (IB) = 10
the length of time from when dialing begins that the off-hook
intrusion algorithm is blocked (suspended) (500 ms units).
Receive scrambled ones V.22bis (2400 bps) length.
Minimum length of time required for detection of scrambled
binary ones during V.22bis handshaking by the answering
modem after S1 pattern conclusion (5/3 ms units).
V.23 direct turnaround carrier length. Minimum length of time that
a master mode V.23 modem must detect carrier when searching
for a direct turnaround sequence (5/3 ms units).
V.23 direct turnaround timeout. Length of time that the modem
searches for a direct turnaround carrier (5/3 ms units added to a
minimum time of 426.66 ms).
V.23 slave carrier detect loss. Minimum length of time that a
slave mode V.23 modem must lose carrier before searching
for a reverse turnaround sequence (5/3 ms units).
V.23 reverse turnaround carrier timeout. Amount of time a slave
mode V.23 modem searches for carriers during potential reverse
turnaround sequences (5/3 ms units).
FSK connection delay low. Amount of time delay added
between end of answer tone handshake and actual modem
connection for FSK modem connections (5/3 ms units).
FSK connection delay high. Amount of time delay added
between end of answer tone handshake and actual modem con-
nection for FSK modem connections (256 x 5/3 ms units).
Receive answer tone length. Minimum length of time required
for detection of a CCITT answer tone (5/3 ms units).
The time after going off-hook when the loop current sense bits
are checked for overcurrent status (5/3 ms units).
Answer tone length when answering a call (5/3 ms units). This
register is only used if TATL (1E) has a value of zero.
Receive scrambled ones V.22 length (5/3 ms units). Minimum
length of time that an originating V.22 (1200 bps) modem must
detect 1200 bps scrambled ones during a V.22 handshake.
Second kissoff tone detector length. The security modes, A1 and
!1, echo a “k” if a kissoff tone longer than the value stored in
SKDTL is detected (10 ms units).
Rev. 1.1
Function
b
, this register sets
Si2401/Si3008
Reset
0xD2
0x0C
0x3C
0x3C
0x0C
0x5A
0xA2
0x08
0x00
0x18
0x08
0xF0
0x00
0x30
33