AWR6843 datasheet(34/71 Pages) TI1

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AWR6843

SWRS248 – APRIL 2020

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Specifications

5.10.3 Multibuffered / Standard Serial Peripheral Interface (MibSPI)

5.10.3.1 Peripheral Description

The MibSPI/SPI is a high-speed synchronous serial input/output port that allows a serial bit stream of

programmed length (2 to 16 bits) to be shifted into and out of the device at a programmed bit-transfer rate.

The MibSPI/SPI is normally used for communication between the microcontroller and external peripherals

or another microcontroller.

Standard and MibSPI modules have the following features:

•

16-bit shift register

•

Receive buffer register

•

8-bit baud clock generator

•

SPICLK can be internally-generated (master mode) or received from an external clock source

(slave mode)

•

Each word transferred can have a unique format.

•

SPI I/Os not used in the communication can be used as digital input/output signals

5.10.3.2 MibSPI Transmit and Receive RAM Organization

The Multibuffer RAM is comprised of 256 buffers. Each entry in the Multibuffer RAM consists of 4 parts: a

16-bit transmit field, a 16-bit receive field, a 16-bit control field and a 16-bit status field. The Multibuffer

RAM can be partitioned into multiple transfer group with variable number of buffers each.

Table 5-7 and Table 5-8 assume the operating conditions stated in Table 5-6.

Table 5-6. SPI Timing Conditions

MIN

TYP

MAX

UNIT

Input Conditions

Input rise time

Input fall time

Output Conditions

CLOAD

Output load capacitance

AWR6843 Datasheet(PDF) 34 Page - Texas Instruments

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