HP EZ-KIT Instrukcja Użytkownika Pobierz pdf (Strona 48)

ADSP-BF548 Processor I/O Peripherals

3-2 Getting Started with ADSP-BF548 EZ-KIT Lite

ADSP-BF548 Processor I/O Peripherals

The ADSP-BF548 processor’s I/O controllers and peripherals fall into

four categories:

1. Serial data interfaces

• Two-wire interface (TWI). A TWI interface is compatible

with the widely-used I

C bus standard. The processor sup-

ports up to two TWI interfaces.

• Serial peripheral interface (SPI) bus standard. The proces-

sor supports up to three SPI interfaces.

• Synchronous serial port (SPORT). This is a powerful

serial port containing two sets of input/output pins that can

operate in I

S mode and has eight-deep receive and transmit

buffers. A SPORT offers considerable control over word

length and framing options. The processor can support up

to four SPORT interfaces.

• Full-duplex universal asynchronous receiver/transmitter

(UART) interface. With external voltage level shifters, the

interface can provide RS-232 style communications. The

processor can support up to four UART interfaces.

• Universal Serial Bus (USB) 2.0 controller. The controller

operates in device or host (on-the-go) mode at low, full, or

high speed. The processor has one USB controller.

2. Parallel data interfaces

• Enhanced parallel peripheral interface (EPPI). An EPPI

supports direct connection of LCD panels, parallel ana-

log-to-digital (A/D) and digital-to-analog (D/A) converters,

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