SI2457-C-GT Silicon Laboratories Inc, SI2457-C-GT Datasheet - Page 54

• Manufacturer Part Number: SI2457-C-GT
• Description: IC ISOMODEM SYSTEM-SIDE 24TSSOP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2457-C-GT

• Mfg Application Notes: SI2493/57/34/15/04, Appl Note AN93
• Data Format: V.21, V.22, V.23, V.32, V.34, V.90, Bell 103, Bell 212A
• Baud Rates: 56k
• Interface: Parallel, UART
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si2457/34/15/04
U6A ITC4
Reset settings = N/A
U6C LVS
Reset settings = 0xXX40
54
Name
15:3
Name
15:8
Type
Type
Bit
1:0
Bit
7:0
Bit
Bit
2
Reserved Read returns zero.
Reserved Do not modify.
Reserved Read returns zero.
LVS[7:0]
D15
D15
Name
Name
OVL
D14
D14
Overload Detected.
This bit has the same function as ROV, but clears itself after the overload has been removed.
See the “Billing Tone Detection” section in “AN93: Modem Designer’s Guide”. This bit is not
affected by the BTE bit.
Line Voltage Status.
Eight bit signed, twos complement number representing the tip-ring voltage. Each bit repre-
sents 1 V. Polarity of the voltage is represented by the MSB (sign bit).
0000_0000 = Measured voltage is < 3 V.
D13
D13
LVS[7:0]
D12
D12
R
D11
D11
D10
D10
D9
D9
Rev. 1.1
D8
D8
Function
Function
D7
D7
D6
D6
D5
D5
D4
D4
D3
D3
OVL
D2
D2
R
D1
D1
D0
D0