SI2457-C-FT Silicon Laboratories Inc, SI2457-C-FT Datasheet - Page 49

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

Specifications of SI2457-C-FT

• Package / Case: 24-TSSOP
• 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
• Operating Frequency: 4.92 MHz
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Supply Current: 26 mA
• Operating Temperature Range: 0 C to + 70 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

U63 DAAC3
Reset settings = 0xXX03
U65 DAAC4
Reset settings = 0x00E0
*Note: Typically used only for board-level debug.
Name
Name
12:8
Type
Type
Bit
7:5
3:0
15
14
13
Bit
Bit
4
15:8
Bit
7:0
Reserved Read returns zero.
Reserved Read returns zero.
Reserved Must not change in a read-modify-write.
Reserved Must not change in a read-modify-write.
D15
D15
PWMG
Name
PDL*
PDN
Reserved Read returns 0x3.
LCS[7:0]
PWMG PDN
D14
Name
D14
R/W
PWM Gain.
0 = No gain.
1 = 6 dB gain applied to AOUT.
Powerdown.
Completely powerdown the Si2457/34/15/04 and Si3008. Once set to 1, the Si2457/34/15/04
must be reset to power on.
0 = Normal.
1 = Powerdown.
Powerdown Line-Side Chip.
0 = Normal operation.
1 = Places the Si3008 in powerdown mode.
D13
D13
R/W
Off-Hook Loop Current (1.1 mA/bit).
D12
LCS[7:0]
D12
R
D11
D11
D10
D10
Preliminary Rev. 0.7
D9
D9
D8
D8
Si2457/34/15/04-Si3008
Function
D7
D7
Function
D6
D6
D5
D5
D4
PDL
R/W
D4
D3
D3
D2
D2
D1
D1
D0
D0
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