Renesas H8S/2111B 用户手册

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页码 582
Rev. 1.00, 05/04, page 239 of 544 
 
Bit Bit 
Name 
Initial 
Value R/W  Description 
MP 
R/W 
Multiprocessor Mode (enabled only in asynchronous 
mode) 
When this bit is set to 1, the multiprocessor 
communication function is enabled. The PE bit and O/
E
bit settings are invalid in multiprocessor mode. 
CKS1 
CKS0 
R/W 
R/W 
Clock Select 1,0 
These bits select the clock source for the on-chip baud 
rate generator. 
00: 
φ clock (n = 0) 
01: 
φ/4 clock (n = 1) 
10: 
φ/16 clock (n = 2) 
11: 
φ/64 clock (n = 3) 
For the relation between the bit rate register setting 
and the baud rate, see section 12.3.9, Bit Rate 
Register (BRR). n is the decimal display of the value of 
n in BRR. 
 
12.3.6 
Serial Control Register (SCR) 
SCR is a register that performs enabling or disabling of SCI transfer operations and interrupt 
requests, and selection of the transfer clock source. For details on interrupt requests, refer to 
section 12.7, Interrupt Sources. 
Bit Bit 
Name 
Initial 
Value R/W  Description 
TIE 
R/W 
Transmit Interrupt Enable 
When this bit is set to 1, a TXI interrupt request is 
enabled. 
RIE 
R/W 
Receive Interrupt Enable 
When this bit is set to 1, RXI and ERI interrupt requests 
are enabled. 
5 TE 
0  R/W 
Transmit 
Enable 
When this bit is set to 1, transmission is enabled. 
RE 0 R/W 
Receive 
Enable 
When this bit is set to 1, reception is enabled.