TLI5012BE1000_15 Datasheet, PDF (29/37 Pages) Infineon Technologies AG – GMR-Based Angle Sensor

TLI5012B E1000
Specification
Command Word
SSC Communication between the TLI5012B E1000and a microcontroller is initiated by a command word. The
structure of the command word is shown in Table 4-16. 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.
Table 4-16 Structure of the Command Word
Name
Bits
Description
RW
[15]
Read - Write
0: Write
1: Read
Lock
UPD
[14..11]
[10]
4-bit Lock Value
0000_B: Default operating access for addresses 0x00:0x04
1010_B: Configuration access for addresses 0x05:0x11
Update-Register Access
0: Access to current values
1: Access to values in update buffer
ADDR
[9..4]
6-bit Address
ND
[3..0]
4-bit Number of Data Words
Safety Word
The safety word consists of the following bits:
Table 4-17 Structure of the Safety Word
Name
STAT¹⁾
Bits
Description
Chip and Interface Status
[15]
Indication of chip reset or watchdog overflow (resets after readout) via SSC
0: Reset occurred
1: No reset
[14]
System error (e.g. overvoltage; undervoltage; V_DD-, GND- off; ROM;...)
0: Error occurred (S_VR; S_DSPU; S_OV; S_XYOL: S_MAGOL; S_FUSE;
S_ROM; S_ADCT)
1: No error
[13]
Interface access error (access to wrong address; wrong lock)
0: Error occurred
1: No error
[12]
Valid angle value (NO_GMR_A = 0; NO_GMR_XY = 0)
0: Angle value invalid
1: Angle value valid
RESP
[11..8]
Sensor number response indicator
The sensor number bit is pulled low and the other bits are high
CRC
[7..0]
Cyclic Redundancy Check (CRC)
1) When an error occurs, the corresponding status bit in the safety word remains “low” until the STAT register (address 00_H)
is read via SSC interface.
Data Sheet
29
Rev. 1.1, 2015-09