COMMELL MPX-2515 - Manual (Page 16)

Commell MPX-2515 User’s Guide Rev 0101
Taiwan Commate Computer Inc. 16
Figure 11 CAN Differential Bus
Recessive State
In the recessive state (i.e., logic '1' on the MCP2551 TXD input), the differential
voltage on CANH and CANL is less than the minimum threshold (< 0.5V receiver
input or < 1.5V transmitter output).
Dominant State
In the dominant state (i.e., logic '0' on the MCP2551 TXD input), the differential
voltage on CANH and CANL is greater than the minimum threshold. A dominant bit
overdrives a recessive bit on the bus to achieve nondestructive bitwise arbitration.
1.7.3 Comparison
The ISO-11898-2 specification requires that a compliant or compatible transceiver
must meet a number of electrical specifications. The following table shows the major