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MC9S12HZ256_08 Datasheet, PDF (341/692 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Chapter 12 Freescaleâs Scalable Controller Area Network (MSCANV2)
Table 12-4. CANCTL1 Register Field Descriptions (continued)
Field
1
SLPAK
0
INITAK
Description
Sleep Mode Acknowledge â This ï¬ag indicates whether the MSCAN module has entered sleep mode (see
Section 12.4.6.4, âMSCAN Sleep Modeâ). It is used as a handshake ï¬ag for the SLPRQ sleep mode request.
Sleep mode is active when SLPRQ = 1 and SLPAK = 1. Depending on the setting of WUPE, the MSCAN will
clear the ï¬ag if it detects activity on the CAN bus while in sleep mode.
0 Running â The MSCAN operates normally
1 Sleep mode active â The MSCAN has entered sleep mode
Initialization Mode Acknowledge â This ï¬ag indicates whether the MSCAN module is in initialization mode
(see Section 12.4.6.5, âMSCAN Initialization Modeâ). It is used as a handshake ï¬ag for the INITRQ initialization
mode request. Initialization mode is active when INITRQ = 1 and INITAK = 1. The registers CANCTL1,
CANBTR0, CANBTR1, CANIDAC, CANIDAR0âCANIDAR7, and CANIDMR0âCANIDMR7 can be written only by
the CPU when the MSCAN is in initialization mode.
0 Running â The MSCAN operates normally
1 Initialization mode active â The MSCAN has entered initialization mode
MC9S12HZ256 Data Sheet, Rev. 2.05
Freescale Semiconductor
341
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