Motorola MPC823e - Page 581

Communication Processor Module
MOTOROLA MPC823e REFERENCE MANUAL 16-127
SERIAL
I/F
COMMUNICATION
16
PROCESSOR MODULE
Figure 16-51. Serial Interface RAM Dynamic Changes
16 RXA
ROUTE
THE TSA USES THE FIRST PART OF
FRAMING SIGNALS:
L1RCLKA
L1RSYNCA
1)
INITIAL STATE
THE RAM, AND THE SHADOW IS
16 RXA
SHADOW
0313263
CSRRA=0
PROGRAM THE
1)
PROGRAMMING
SHADOW RAM FOR THE NEW
THE SERIAL ENTERFACE
EXCHANGE
THE SHADOW AND THE
RX AND TX ROUTE AND SETS
THE SECOND PART OF THE RAM.
CSR
x
N = 0
CURRENT-ROUTE RAMS
64 95 96 127
RAM ADDRESS:
CSRTA=0
CSRRA=1
CSRTA=1
CSRRA=0
CSRTA=0
16 TXA
ROUTE
FRAMING SIGNALS:
L1TCLKA
L1TSYNCA
16 TXA
SHADOW
RAM ADDRESS:
CSR
x
N.
16 RXA
ROUTE
FRAMING SIGNALS:
L1RCLKA
L1RSYNCA
16 RXA
SHADOW
0313263
64 95 96 127
RAM ADDRESS:
16 TXA
ROUTE
FRAMING SIGNALS:
L1TCLKA
L1TSYNCA
16 TXA
SHADOW
RAM ADDRESS:
AND RESETS THE CSR
x
N.
16 RXA
ROUTE
FRAMING SIGNALS:
L1RCLKA
L1RSYNCA
16 RXA
SHADOW
0313263
64 95 96 127
RAM ADDRESS:
16 TXA
ROUTE
FRAMING SIGNALS:
L1TCLKA
L1TSYNCA
16 TXA
SHADOW
RAM ADDRESS:
EXCHANGES BETWEEN