CP3BT23_14 Datasheet, PDF (156/324 Pages) Texas Instruments – CP3BT23 Reprogrammable Connectivity Processor with Bluetooth and Dual CAN Interfaces

CP3BT23
SNOSCX3A – JULY 2013 – REVISED JANUARY 2014
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INTERNAL
DIAGEN
EIT
If the Internal function is enabled, the CANTX and CANRX pins of the CAN module are
internally connected to each other. This feature can be used in conjunction with the
LOOPBACK mode. This means that the CAN module can receive its own sent messages
without connecting an external transceiver chip to the CANTX and CANRX pins; it allows
software to run real stand-alone tests without any peripheral devices.
0 – Normal mode.
1 – Internal mode.
The Diagnostic Enable bit globally enables or disables the special diagnostic features of
the CAN module. This includes the following functions:
• LO (Listen Only).
• IGNACK (Ignore Acknowledge).
• LOOPBACK (Loopback).
• INTERNAL (Internal Loopback).
• Write access to hidden receive buffer.
0 – Normal mode.
1 – Diagnostic features enabled.
The Error Interrupt Type bit configures when the Error Interrupt Pending Bit
(CIPND.EIPND) is set and an error interrupt is generated if enabled by the Error Interrupt
Enable (CIEN.EIEN).
0 – The EIPND bit is set on every error on the CAN bus.
1 – The EIPND bit is set only if the error state (CSTPND.NS) changes as a result of
incrementing either the receive or transmit error counter.
156 CAN Module
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