
Chapter 10 Freescale’s Scalable Controller Area Network (S12MSCANV2)
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MC9S12C-Family / MC9S12GC-Family
Freescale Semiconductor
Rev 01.24
1
SLPAK
Sleep Mode Acknowledge — This ag indicates whether the MSCAN module has entered sleep mode (see
Sleep mode is active when SLPRQ = 1 and SLPAK = 1. Depending on the setting of WUPE, the MSCAN will
clear the ag if it detects activity on the CAN bus while in sleep mode.
0 Running — The MSCAN operates normally
1 Sleep mode active — The MSCAN has entered sleep mode
0
INITAK
Initialization Mode Acknowledge — This ag indicates whether the MSCAN module is in initialization mode
mode request. Initialization mode is active when INITRQ = 1 and INITAK = 1. The registers CANCTL1,
CANBTR0, CANBTR1, CANIDAC, CANIDAR0–CANIDAR7, and CANIDMR0–CANIDMR7 can be written only by
the CPU when the MSCAN is in initialization mode.
0 Running — The MSCAN operates normally
1 Initialization mode active — The MSCAN has entered initialization mode
Table 10-2. CANCTL1 Register Field Descriptions (continued)
Field
Description