Section 10 Serial Communication Interface
Rev. 7.00 Mar 10, 2005 page 357 of 652
REJ09B0042-0700
Table 10.8 SMR Settings and Corresponding Data Transfer Formats
SMR Data Transfer Format
Bit 7
COM
Bit 6
CHR
Bit 2
MP
Bit 5
PE
Bit 3
STOP Mode
Data
Length
Multiprocessor
Bit
Parity
Bit
Stop Bit
Length
00000 8-bit dataNo No1 bit
1 2 bits
10
Asynchronous
mode
Yes 1 bit
1 2 bits
1 0 0 7-bit data No 1 bit
1 2 bits
10 Yes1 bit
1 2 bits
0100 8-bit dataYes No1 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
mode
8-bit data No No No
*: 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
32
Pin Function
0 0 0 Internal I/O port (SCK
32
pin not used)
1
Asynchronous
mode
Outputs clock with same frequency as bit rate
1 0 External Inputs clock with frequency 16 times bit rate
1 0 0 Internal Outputs serial clock
10
Synchronous
mode
External Inputs serial clock
0 1 1 Reserved (Do not specify these combinations)
10 1
11 1