TLE9222 datasheet(21/43 Pages) INFINEON

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Data Sheet

Rev. 1.0 2015-06-12

TLE9222

Functional Description

4.8

SPI Interface and Status Register

The TLE9222 has a 16-bit SPI interface for reading out the internal status register. The bits in the register

reflects detailed flags regarding external events such as wake-up and power-on recognition, detection of

errors / warnings and operation mode indication, see Table 5.

Table 5

Bit definition of the status register

Bit

Name

Indication

Comment

Bit 0 Remote wake-up

flag

“Low”: Remote wake-up detected

–

“High”: –

–

Bit 1 Mode flag

”Low”: BD_Standby mode

–

“High”: BD_Normal mode

–

Bit 2 BGE flag

“Low”: Transmitter disabled by Bus Guardian,

BGE input “low” in BD_Normal mode

Error, will trigger Bit 12 → “low”

“High”: –

–

Bit 3 RxEN flag

“Low”: Bus activity ongoing

Not latched

“High”: Bus idle

–

Bit 4 Power-on flag

“Low”: Power-on detected

–

“High”: –

–

Bit 5 Bus-error flag

“Low”: Bus error detected

Error, will trigger Bit 12 → “low”

“High”: –

–

Bit 6 Temperature-high

flag

“Low”: Overtemperature detected

Error, will trigger Bit 12 → “low”

“High”: –

–

Bit 7 Transmitter time-

out flag

“Low”: Transmitter activation time-out

Error, will trigger Bit 12 → “low”

“High”: –

–

Bit 8 VCC-undervoltage

flag

“Low”: VCC Undervoltage detected

Error, will trigger Bit 12 → “low”

“High”: –

–

Bit 9 VIO-undervoltage

flag

“Low”: VIO Undervoltage detected

Error, will trigger Bit 12 → “low”

“High”: –

–

Bit 10 SPI-error flag

“Low”: SPI error detected

Error, will trigger Bit 12 → “low”

“High”: –

–

Bit 11 Temperature-

warning flag

“Low”: High temperature warning

–

“High”: –

–

Bit 12 Error flag

“Low”: Error(s) detected

Error, will trigger ERRN output

“low” if signal on STBN is “high”

“High”: No errors detected

–

Bit 13 Reserved

Always ”High”

–

Bit 14 Reserved

Always “Low”

–

Bit 15 Even parity bit

“Low”: Odd parity of Bit 0 to Bit 14

–

“High”: Even parity of Bit 0 to Bit 14

–

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