SI2493-C-FS Silicon Laboratories Inc, SI2493-C-FS Datasheet - Page 63

• Manufacturer Part Number: SI2493-C-FS
• Description: IC ISOMODEM SYSTEM-SIDE 16SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI2493-C-FS

• Mfg Application Notes: SI2493/57/34/15/04, Appl Note AN93
• Data Format: V.21, V.22, V.23, V.29, V.32, V.34, V.90, V.92, Bell 103, Bell 212A
• Baud Rates: 56k
• Interface: 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

The following are examples of Boot commands, AT
command macros, and automatically-loaded firmware
upgrades.
3.3.7. Boot Command Example
On power-up or reset, it is desired to set the UART rate
to 115.2 kbps and limit the Si2493/57/34/15/04 to V.34
and lower operation.
The AT commands required to do this manually are:
AT\T12<CR>
AT&H2<CR>
To implement this as a Boot Command, the commands
are:
BOOT<CR>
AT\T12<CR>
AT&H2<CR>
<CR>
This must be written to the EEPROM as ascii hex in
eight (8) address blocks. The actual AT commands to
store this boot command in the EEPROM starting at hex
address 0000 are:
AT:M0000,42,4F,4F,54,0D,41,54,5C
AT:M0008,54,31,32,0D,41,54,26,48
AT:M0010,32,0D,0D,00,00,00
Note that 41h corresponds to the display character A,
54h to T, 42 to B, 4F to O etc., and the value, 0D, for
carriage return corresponds to the decimal value, 13,
stored in S-Register 3 (S3). Table 30 shows the
relationship between the decimal values, hex values,
and display characters.
3.3.8. AT Command Macro Example
This example creates an AT command macro,
ATN<CR>, to configure the Si2493/57/34/15/04 for
operation in Norway.
The AT commands required to do this manually are:
AT:U2C,00B0,0080<CR>
AT:U67,000C,0010,0004<CR>
AT:U4D,001<CR>
To implement this as an AT command macro, the
EEPROM contents should be:
N<CR>
AT:U2C,00B0,0080<CR>
AT:U67,000C,0010,0004<CR>
AT:U4D,001<CR>
<CR><CR>
Rev. 0.9
This must be written to the EEPROM as ASCII hex in
eight (8) address blocks. The actual AT commands to
store this boot command in the EEPROM starting at hex
address 0000 are:
AT:M0000,4E,0D,41,54,3A,55,32,43
AT:M0008,2C,30,30,42,30,0D,0D,30
AT:M0010,38,30,0D,41,54,3A,55,36
AT:M0018,37,2C,30,30,30,43,2C,30
AT:M0020,30,31,30,2C,30,30,30,34
AT:M0028,0D,41,54,3A,55,34,44,2C
AT:M0030,30,30,31,0D,0D,0D
With this macro installed in the EEPROM, the
ATN<CR>
operation in Norway.
3.3.9. Autoloading Firmware Upgrade Example
This example stores a firmware upgrade in EEPROM
that is automatically loaded into the modem after power-
up or hardware/software reset with a pulldown on the
D6 pin (Si2493/57/34/15/04 pin 4).
The AT commands required to load the firmware
upgrade manually are:
AT*Y254:W0050,0000<CR>
AT:PF800.08D5
To implement this as a boot command macro, the
commands are:
BOOT<CR>
AT*Y254:W0050,0000<CR>
AT:PF800.08D5
This must be written to the EEPROM as ascii hex in
eight (8) address blocks. The actual AT commands to
store this boot command in the EEPROM starting at hex
address 0000 are:
AT:M0000,42,4F,4F,54,0D,41,54,2A
AT:M0008,59,32,35,34,3A,57,30,30
AT:M0010,35,30,2C,30,30,30,30,0D
AT:M0018,41,54,3A,50,46,34,30,30
AT:M0020,2C,30,38,44,35,0D,0D,0D
Note that this firmware upgrade (patch) is only an
example meant to illustrate the procedure for loading a
patch into the EEPOROM. Loading this code into a
Si2493/57/34/15/04 causes undesirable behavior.
(24-Pin TSSOP Only)
command
configures
the
modem
AN93
for
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