Freescale Semiconductor MPC5604B - Register Description

MPC5604B/C Microcontroller Reference Manual, Rev. 8
254 Freescale Semiconductor
14.3 Register description
The CAN sampler registers are listed in Table 14-1.
14.3.1 Control Register (CR)
Table 14-1. CAN sampler memory map
Base address: 0xFFE7_0000
Address offset Register Location
0x00 Control Register (CR) on page 254
0x04–0x30 Sample registers 0–11 on page 255
Offset: 0x00 Access: Read/write
0 1 2 3 4 5 6 7 8 9 101112131415
R0000000000000000
W
Reset0000000000000000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
RX_COMPLETE
BUSY
ACTIVE_CK
000
MODE
CAN_RX_SEL BRP
CAN_SMPLR_EN
W
Reset0000000000000000
Figure 14-2. Control Register (CR)
Table 14-2. CR field descriptions
Field Description
RX_COMPLETE 1: CAN frame is stored in the sample registers
0: CAN frame has not been stored in the sample registers
BUSY This bit indicates the sampling status
1: Sampling is ongoing
0: Sampling is complete or has not started
ACTIVE_CK This bit indicates which is current clock for sample registers, that is, xmem_ck.
1: RC_CLK is currently xmem_ck
0: ipg_clk_s is currently xmem_ck
MODE 0: Skip the first frame and sample and store the second frame (SF_MODE)
1: Sample and store the first frame (FF_MODE)