Datasheet

ST72334J/N, ST72314J/N, ST72124J
90/153
SERIAL COMMUNICATIONS INTERFACE (Cont’d)
Figure 50. SCI Baud Rate and Extended Prescaler Block Diagram
TRANSMITTER
RECEIVER
ETPR
ERPR
EXTENDED PRESCALER RECEIVER RATE CONTROL
EXTENDED PRESCALER TRANSMITTER RATE CONTROL
EXTENDED PRESCALER
CLOCK
CLOCK
RECEIVER RATE
TRANSMITTER RATE
BRR
SCP1
f
CPU
CONTROL
CONTROL
SCP0
SCT2
SCT1SCT0SCR2SCR1SCR0
/2
/PR
/16
CONVENTIONAL BAUD RATE GENERATOR
EXTENDED RECEIVER PRESCALER REGISTER
EXTENDED TRANSMITTER PRESCALER REGISTER