TLE5012_10 Datasheet, PDF (30/64 Pages) Infineon Technologies AG – GMR-Based Angular Sensor for Rotor-Position Sensing

TLE5012
Specifications
3.5.1.2 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 TLE5012)
• Data Words (any data transferred in any direction)
• Safety Word (confirms the data transfer and provide status information)
twr _del ay
COMMAND
READ Data 1
READ Data 2
SAFETY-WORD
SSC-Master is driving DATA
SSC-Slave is driving DAT A
Figure 18 SSC data transfer (data-read example)
twr_delay
COMMAND WRITE Data 1
SAFETY-WORD
Figure 19
SSC-Master is driving DATA
SSC-Slave is driving DAT A
SSC data transfer (data-write example)
Command Word
The TLE5012 is controlled by a Command Word. It is sent first at the start of every data transmission. The structure
of the Command Word is shown in Table 15, where the update (UPD) bit allows access to current or updated
values. If an update command is issued and UPD is set, the immediate values are stored in the update buffer
simultaneously. This enables a snapshot of all necessary system parameters at the same time. Bits with an update
buffer are marked by an “u” in the bit type in the register description.
Table 15
Name
RW
Lock
UPD
Structure of the Command Word
Bits
Description
[15]
Read - write
0:Write
1:Read
[14..11]
[10]
4-bit lock value
0000_B: Default operating access for addresses 0x00:0x04
1010_B: Config- access for addresses 0x05:0x11
Update register access
0: Access to current values
1: Access to updated values
Final Data Sheet
30
V 1.0, 2010-11