MFR4300 datasheet(79/266 Pages) FREESCALE

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FlexRay Module (FLEXRAYV2)

MFR4300 Data Sheet, Rev. 1

Freescale Semiconductor

3.3.2.11

Protocol Interrupt Flag Register 0 (PIFR0)

The register holds one set of the protocol related individual interrupt flags. The application clears an

interrupt flag by writing a '1' to it. Writing a ‘0’ will not change the state of the flag. If the application tries

to clear a flag and the FlexRay module sets this flag at the same ¹³×time, then that flag remains set.

RBIE

Receive Buffer Interrupt Enable — This flag controls if the receive buffer interrupt line is asserted when the

RBIF flag is set.

0 Disable interrupt line

1 Enable interrupt line

TBIE

Transmit Interrupt Enable — This flag controls if the transmit buffer interrupt line is asserted when the TBIF

flag is set.

0 Disable interrupt line

1 Enable interrupt line

0x0018

Write: Normal Mode

76543

210

R FATL

_IF

INTL

_IF

ILCF

_IF

CSA

_IF

MRC

_IF

MOC

_IF

CCL

_IF

MXS

_IF

MTX

_IF

LTXB

_IF

LTXA

_IF

TBVB

_IF

TBVA

_IF

TI2

_IF

TI1

_IF

CYS

_IF

Reset

000000

00000

Figure 3-10. Protocol Interrupt Flag Register 0 (PIFR0)

Table 3-17. PIFR0 Field Descriptions (Sheet 1 of 3)

Field

Description

FATL_IF

Fatal Protocol Error Interrupt Flag — This flag is set when the protocol engine has detected a fatal protocol

error. In this case, the protocol engine goes into the POC:halt state immediately. The fatal protocol errors are:

1) pLatestTx violation, as described in the MAC process of the FlexRay protocol

2) transmission across slot boundary violation, as described in the FSP process of the FlexRay protocol

0 No such event.

1 Fatal protocol error detected.

INTL_IF

Internal Protocol Error Interrupt Flag — This flag is set when the protocol engine has detected an internal

protocol error. In this case, the protocol engine goes into the POC:halt state immediately. An internal protocol

error occurs when the protocol engine has not finished a calculation and a new calculation is requested. This

can be caused by a hardware error.

0 No such event.

1 Internal protocol error detected.

ILCF_IF

Illegal Protocol Configuration Interrupt Flag — This flag is set when the protocol engine has detected an

illegal protocol configuration parameter setting. In this case, the protocol engine goes into the POC:halt state

immediately.

The protocol engine checks the listen_timeout value programmed into the Protocol Configuration Register 14

(PCR14) and Protocol Configuration Register 15 (PCR15) when the CONFIG_COMPLETE command was sent

by the application via the Protocol Operation Control Register (POCR). If the value of listen_timeout is equal to

zero, the protocol configuration setting is considered as illegal.

0 No such event.

1 Illegal protocol configuration detected.

Table 3-16. GIFER Field Descriptions (Sheet 3 of 3)

Field

Description

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