ZUSBOPTSC01ZAC datasheet(156/402 Pages) ZILOG

156 / 402 page

LIN-UART

P R E L I M I N A R Y

PS024604-1005

Z8 Encore!® Motor Control Flash MCUs

Product Specification

134

NEWFRM—Status bit denoting the start of a new frame. Reading the LIN-UART Receive

Data register resets this bit to 0.

0 = The current byte is not the first data byte of a new frame.

1 = The current byte is the first data byte of a new frame.

MPRX—Multiprocessor Receive

Returns the value of the last multiprocessor bit received. Reading from the LIN-UART

Receive Data register resets this bit to 0.

Digital Noise Filter Mode Status Field (MSEL = 001B)

NE—Noise Event. This bit is asserted if digital noise is detected on the receive data line

while the data is sampled (center of bit time). If this bit is set, it does not mean that the

receive data is corrupted (though it may be in extreme cases), just that one or more of the

noise filter data samples near the center of the bit time did not match the average data

value.

LIN Mode Status Field (MSEL = 010B)

NE—Noise Event. This bit is asserted if some noise level is detected on the receive data

line while the data is sampled (center of bit time). If this bit is set, it does not indicate that

the receive data is corrupt (though it may be in extreme cases), just that one or more of the

16x data samples near the center of the bit time did not match the average data value.

RxBreakLength—LIN mode received break length. This field may be read following a

break (LIN WAKE-UP or BREAK) so software can determine the measured duration of

the break. If the break exceeds 15 bit times the value saturates at 1111B.

Hardware Revision Mode Status Field (MSEL = 111B)

This field indicates the hardware revision of the LIN-UART block.

00_xxx LIN UART hardware rev

01_xxx reserved

10_xxx reserved

11_xxx reserved

LIN-UART Control 0 Register

The LIN-UART Control 0 Register, shown in Table 71, configures the basic properties of

the LIN-UART’s transmit and receive operations. A more detailed discussion of each bit

follows the table.

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