TLE5012B datasheet(31/50 Pages) INFINEON

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TLE5012B

Specification

Data Sheet

Rev. 2.0, 2014-02

4.4.1.2

SSC Data Transfer

The SSC data transfer is word-aligned. The following transfer words are possible:

•

Command Word (to access and change operating modes of the TLE5012B)

•

Data words (any data transferred in any direction)

•

Safety Word (confirms the data transfer and provides status information)

Figure 4-8 SSC data transfer (data-read example)

Figure 4-9 SSC data transfer (data-write example)

Command Word

SSC Communication between the TLE5012B and a microcontroller is generally initiated by a command word. The

structure of the command word is shown in Table 4-15. If an update is triggered by shortly pulling low CSQ without

a clock on SCK a snapshot of all system values is stored in the update registers simultaneously. A read command

with the UPD bit set then allows to readout this consistent set of values instead of the current values. Bits with an

update buffer are marked by an “u” in the Type column in register descriptions. The initialization of such an update

is described on page 33.

Table 4-15 Structure of the Command Word

Name

Bits

Description

[15]

Read - Write

0: Write

1: Read

Lock

[14..11]

4-bit Lock Value

0000B: Default operating access for addresses 0x00:0x04

1010B: Configuration access for addresses 0x05:0x11

COMMAND

READ Data 1

READ Data 2

SAFETY-WORD

SSC-Master is driving DATA

SSC-Slave is driving DATA

twr_delay

COMMAND

WRITE Data 1

SAFETY-WORD

SSC-Master is driving DATA

SSC-Slave is driving DATA

twr_delay

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