SI2457-C-FS Silicon Laboratories Inc, SI2457-C-FS Datasheet - Page 46

• Manufacturer Part Number: SI2457-C-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2457-C-FS

• 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: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Si2457/34/15/04
46
Register
UAA
U9F
UA0
UA1
UA2
UA3
UA4
UA5
UA6
UA7
UA8
UA9
U87
V29MODE This is a bit mapped register.
Name
SASF
SAM
SC0
SC1
SC2
SC3
SC4
SC5
SC6
SC7
SC8
SC9
Description
This is a bit-mapped register
SAS frequency detection. See “AN93: Modem Designer’s Guide” for complete
details.
SAS cadence 0. Sets the duration of the first SAS tone (ms).
SAS cadence 1. Sets the duration of the first SAS silence (ms).
SAS cadence 2. Sets the duration of the second SAS tone (ms).
SAS cadence 3. Sets the duration of the second SAS silence (ms).
SAS cadence 4. Sets the duration of the third SAS tone (ms).
SAS cadence 5. Sets the duration of the third SAS silence (ms).
SAS cadence 6. Sets the duration of the fourth SAS tone (ms).
SAS cadence 7. Sets the duration of the fourth SAS silence (ms).
SAS cadence 8. Sets the duration of the fifth SAS tone (ms).
SAS cadence 9. Sets the duration of the fifth SAS silence (ms).
Table 16. U-Register Description (Continued)
Rev. 1.1
Default
0x001E
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000