COMMELL MPX-2515 - Manual (Page 34)

Commell MPX-2515 User’s Guide Rev 0100
Taiwan Commate Computer Inc. 34
#define MCP_ABORT_TXB2 0X58 /* sub-command code */
#define EP2 2 /* Endpoint 2 */
#define EP3 3 /* Endpoint 3 */
OFFSET BULK OUT (EP2) BULK IN (EP1)
SIZEOF_DATA 0X04 0X01
COMMAND 0X23 0X23
ERROR 0X00 Error code
DATA_0 0X58 Abort status code
DATA_1 Reserved checksum
DATA_2 0X50
DATA_3 0X08
DATA_4 checksum
DATA_5
1.9 CCP_CAN_BIT_MODIFY Service
1.9.1 Introduction to Bit Modify
The Bit Modify instruction provides a means for setting or clearing individual bits
in specific status and control registers. This command is not for all registers. Please
refer to the MCP2515 data sheet to determine which registers allow the use of this
command.
Note:
Executing the Bit Modify command on registers that are not bit-modifiable
will force the mask to FFh. This will allow byte writes to the registers, not bit
modify.
The following figure shows the Bit Modify operations.