Gw-instek GDS-2000A series Option User Manual Manual de usuario descargar pdf (Pagina 54)

GDS-2000A Series Options Manual

SPI

The SPI (Serial Interface Peripheral) bus is fully

configurable to accommodate the wide variety of

SPI interfaces. This bus is only available on 4

channel models.

Inputs

SCLK, SS, MOSI, MISO

Threshold

SCLK, SS, MOSI, MISO

Configuration

SCLK edge, SS logic level, Word

size, Bit order

Trigger On

SS Active, MOSI, MISO,

MOSI&MISO

UART Serial Bus Configuration

The UART bus menu is designed to decode RS-232 and other

common RS-232 variants such as RS-422, RS-485. The software

configuration is also flexible enough to decode the many

proprietary protocols based on RS-232.

Background

Basic RS-232 protocol uses single-ended data

transmissions. The signal voltage levels can be

high (±15V)* and employ active low signaling.

High speed variants of RS-232, such as RS-422 and

RS-485 use differential signaling and commonly

employ low voltage differential signals with active

high signaling.

Universal Asynchronous Receiver / Transmitter

(UART) or RS-232 driver/receiver ICs commonly

used for embedded applications typically use

active high signaling with standard IC signal

levels.

*Note: the GDS-2000A does not support ±15V

signaling for the Logic Analyzer inputs)

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Gw-instek GDS-2000A series Option User Manual Manual de usuario Pagina 54