MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 562

• Manufacturer Part Number: MCBSTM32EXL
• Description: BOARD EVALUATION FOR STM32F103ZE
• Manufacturer: Keil

Specifications of MCBSTM32EXL

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Controller area network (bxCAN)
22.9
22.9.1
22.9.2
562/995
RESET
31
15
rs
Bits 31:17
30
14
●
CAN registers
Register access protection
Erroneous access to certain configuration registers can cause the hardware to temporarily
disturb the whole CAN network. Therefore the CAN_BTR register can be modified by
software only while the CAN hardware is in initialization mode.
Although the transmission of incorrect data will not cause problems at the CAN network
level, it can severely disturb the application. A transmit mailbox can be only modified by
software while it is in empty state, refer to
The filter values can be modified either deactivating the associated filter banks or by setting
the FINIT bit. Moreover, the modification of the filter configuration (scale, mode and FIFO
assignment) in CAN_FMxR, CAN_FSxR and CAN_FFAR registers can only be done when
the filter initialization mode is set (FINIT=1) in the CAN_FMR register.
CAN control and status registers
Refer to
CAN master control register (CAN_MCR)
Address offset: 0x00
Reset value: 0x0001 0002
Bit 16 DBF: Debug freeze
Bit 15 RESET: bxCAN software master reset
29
13
The error and status change interrupt can be generated by the following events:
–
–
–
Reserved, forced by hardware to 0.
0: CAN working during debug
1: CAN reception/transmission frozen during debug. Reception FIFOs can still be
accessed/controlled normally.
0: Normal operation.
1: Force a master reset of the bxCAN -> Sleep mode activated after reset (FMP bits and
CAN_MCR register are initialized to the reset values). This bit is automatically reset to 0.
Section 1.1 on page 37
28
12
Error condition, for more details on error conditions please refer to the CAN Error
Status register (CAN_ESR).
Wakeup condition, SOF monitored on the CAN Rx signal.
Entry into Sleep mode.
Reserved
27
11
26
10
25
9
Doc ID 13902 Rev 9
for a list of abbreviations used in register descriptions.
Reserved
24
8
TTCM
23
rw
Figure 198: Transmit mailbox
7
ABOM
22
rw
6
AWUM
21
rw
5
NART
20
rw
4
RFLM
19
rw
3
states.
TXFP
18
rw
2
SLEEP
17
rw
1
RM0008
INRQ
DBF
16
rw
rw
0