M16C/62P Group (M16C/62P, M16C/62PT)
17. Serial Interface
Rev.2.41
Jan 10, 2006
Page 188 of 390
REJ09B0185-0241
Figure 17.12
UiSMR4 Register
UARTi Special Mode Register 4 (i=0 to 2)
After Reset
00h
Bit Symbol
RW
NOTES :
1. Set to “0” w hen each condition is generated.
SCLHI
RW
ACKC
SCL Output Stop Enable Bit
0 : Disabled
1 : Enabled
SWC9
RW
SCL Wait Bit 3
0 : SCL “L” hold disabled
1 : SCL “L” hold enabled
STSPSEL
0 : Start and stop conditions not output
1 : Start and stop conditions output
RW
RW
ACKD
STPREQ
b0
RSTAREQ
STAREQ
RW
b7 b6 b5 b4 b3 b2 b1
U0SMR4 to U2SMR4
Bit Name
Symbol
Function
036Ch, 0370h, 0374h
Address
RW
RW
RW
ACK Data Output Enable Bit
0 : Serial interface data output
1 : ACK data output
0 : Clear
1 : Start
Restart Condition Generate Bit
(1)
SCL,SDA Output Select Bit
ACK Data Bit
0 : ACK
1 : NACK
Start Condition Generate Bit
(1)
0 : Clear
1 : Start
Stop Condition Generate Bit
(1)
0 : Clear
1 : Start
http://www.xinpian.net
提供单片机解密、IC解密、芯片解密业务
010-62245566 13810019655