Motorola MPC823e - Page 587

Communication Processor Module
MOTOROLA MPC823e REFERENCE MANUAL 16-133
SERIAL
I/F
COMMUNICATION
16
PROCESSOR MODULE
Figure 16-54. Example of Clock Edge (CE) Effect When DSCx = 0
Figure 16-55. Example of Clock Edge (CE) Effect When DSCx = 1
CE=0
L1xCLK
L1xSYNC (FE=0)
L1TXDx (BIT 0)
L1STx (ON BIT 0)
L1xSYNC (FE=1)
RX SAMPLED HERE
L1STx IS DRIVEN FROM CLOCK LOW IN
BOTH THE FEx SETTINGS
tFSDx=1
CE=1
L1xCLK
L1xSYNC
(FEx=0)
L1TXDx (BIT 0)
L1STx (ON BIT 0)
L1xSYNC
(FEx=1)
RX SAMPLED HERE
L1STx DRIVEN FROM CLOCK HIGH FOR BOTH FEx SETTINGS