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S9S12C128F0MFUE Datasheet, PDF (296/690 Pages) Freescale Semiconductor, Inc – Reference Manual | |||
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Chapter 10 Freescaleâs Scalable Controller Area Network (S12MSCANV2)
Table 10-2. 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 10.4.5.4, 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 10.4.5.5, 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
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MC9S12C-Family / MC9S12GC-Family
Freescale Semiconductor
Rev 01.24
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