SN250 datasheet(44/130 Pages) STMICROELECTRONICS

Il numero della parte	SN250

Spiegazioni elettronici	Single-chip ZigBee/802.15.4 solution

PDF	130 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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Functional description—application modules

SN250

44/130

7.2

Serial controller SC1

The SN250 SC1 module provides asynchronous (UART) or synchronous (SPI or I2C) serial

communications.

Figure 6 is a block diagram of the SC1 module.

Figure 6.

SC1 block diagram

The full-duplex interface of the SC1 module can be configured into one of these three

communication modes, but it cannot run them simultaneously. To reduce the interrupt

service requirements of the CPU, the SC1 module contains buffered data management

schemes for the three modes. A dedicated, buffered DMA controller is available to the SPI

and UART controllers while a FIFO is available to all three modes. In addition, a SC1 data

Finally, the SC1 routes the interface signals to GPIO pins. These are shared with other

functions and are controlled by the GPIO_CFG register. For selecting alternate pin functions,

please refer to Table 17 and Table 18.

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