SI2457-D-FT Silicon Laboratories Inc, SI2457-D-FT Datasheet - Page 291

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

Specifications of SI2457-D-FT

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 75 illustrates the MCU software architecture, and the MCU and modem hardware connections.
Application layer
Buffer management layer
Interrupt service and/or polling
Hardware access layer
MCU
Modem
Hardware Interface
Parallel interface
Parallel interface
Register 1 (HIR1)
Figure 75. MCU Software and Modem Interface
status_control.c
modem_hardware.c
receive FIFOs
Transmit and
SPI master
modem_main.c
SPI slave
Rev. 1.3
application_buffers.c
ISR_and_polling.c
UART interface
(UART, timers, etc.)
MCU_hardware.c
MCU hardware
dot_command_loop.c
Dot‐command shell
test_code.c
(Optional)
AN93
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