Rev. 5.00, 09/03, page 454 of 760
Table 14.9 Serial Mode Reg ister Settings and SCI Communication Formats
SCSMR Settings SCI Communication Format
Bit 7
C/A
AA
ABit 6
CHR Bit 5
PE Bit 2
MP Bit 3
STOP Mode Data
Length Parity
Bit Multipro-
cessor Bit Stop Bit
Length
0 0 0 0 0 Asynchronous 8-bit Not set Not set 1 bit
12 bits
10 Set 1 bit
12 bits
1 0 0 7-bit Not set 1 bit
12 bits
10 Set 1 bit
12 bits
0*1 0 8-bit Not set Set 1 bit
*12 bits
1*0 7-bit 1 bit
*1
Asynchronous
(multiprocessor
format)
2 bits
1**** Synchronous 8-bit Not set None
Note: Asterisks (*) indicate don’t care bits.
Table 14.10 SCSMR and SCSCR Settings and SCI Clock Source Selection
SCSMR SCSCR Settings SCI Transmit/Receive Clock
Bit 7
C/A
AA
ABit 1
CKE1 Bit 0
CKE0 Mode Clock
Source SCK
Pin Function
0 0 0 Internal SCI does not use the SCK pin
1 Outputs a clock with frequency
matching the bit rate
1 0 External
1
Asynchronous
mode
Inputs a clock with frequency 16
times the bit rate
1 0 0 Internal Outputs the synchrono us clo ck
1
1 0 External Inputs the synchronous clock
1
Synchronous
mode