MAC7200 datasheet(727/976 Pages) FREESCALE

727 / 976 page

Functional Description

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

649

31.9.2.14 LIN CRC Polynomial Register

31.10 Functional Description

31.10.1 General

This section provides a complete functional description of the eSCI block, detailing the operation of the

design from the end user perspective in a number of subsections.

Figure 31-21 shows the structure of the eSCI module. The eSCI allows full duplex, asynchronous, NRZ

serial communication between the CPU and remote devices, including other CPUs. The eSCI transmitter

and receiver operate independently, although they use the same baud rate generator. The CPU monitors the

status of the eSCI, writes the data to be transmitted, and processes received data.

Address Offset: 0x18

Access: User read/write (write with no ongoing transmissions)

765

43210

P15P14

P13P12

P11P10

Reset

11000101

Figure 31-19. LIN CRC Polynomial Register 1 (LINCRCP1)

Address Offset: 0x19

Access: User read/write (write with no ongoing transmissions)

765

43210

Reset

10011001

Figure 31-20. LIN CRC Polynomial Register 2 (LINCRCP2)

Table 31-20. LINCRCP1–2 Field Descriptions

Field

Description

7–0

Polynomial bit xn. Used to define the LIN polynomial - standard is x15 + x14 + x10 + x8 + x7 + x4 + x3 + 1

(the polynomial used for the CAN protocol).

MAC7200 Datasheet(PDF) 727 Page - Freescale Semiconductor, Inc