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Table 10-8 SMR Settings and Corresponding Data Transfer Formats
SMR
Data Transfer Format
bit 7
bit 6
bit 2
bit 5
bit 3
Data
Multiprocessor Parity Stop Bit
COM CHR MP
PE
STOP Mode
Length
Bit
Bit
Length
0
0
0
0
0
Asynchronous 8-bit data
No
No
1 bit
1
mode
2 bits
1
0
Yes
1 bit
1
2 bits
1
0
0
7-bit data
No
1 bit
1
2 bits
1
0
Yes
1 bit
1
2 bits
0
1
0
0
8-bit data
Yes
No
1 bit
1
2 bits
1
0
5-bit data
No
1 bit
1
2 bits
1
0
0
7-bit data
Yes
1 bit
1
2 bits
1
0
5-bit data
No
Yes
1 bit
1
2 bits
1
*
0
*
*
Synchronous
8-bit data
No
No
No
mode
*:
Don’t care
Table 10-9 SMR and SCR3 Settings and Clock Source Selection
SMR
SCR3
bit 7 bit 1 bit 0
Transmit/Receive Clock
COM CKE1 CKE0 Mode
Clock Source
SCK
3x
Pin Function
0
0
0
Asynchronous Internal
I/O port (SCK
3x
pin not used)
1
mode
Outputs clock with same frequency as bit rate
1
0
External
Outputs clock with frequency 16 times bit rate
1
0
0
Synchronous
Internal
Outputs serial clock
1
0
mode
External
Inputs serial clock
0
1
1
Reserved (Do not specify these combinations)
1
0
1
1
1
1