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Section 17 I
2
C Bus Interface 3 (IIC3)
Rev. 0.50 May 18, 2006 Page 814 of 1588
REJ09B0313-0050
17.3.2 I
2
C Bus Control Register 2 (ICCR2)
ICCR2 is an 8-bit readable/writable register that issues start/stop conditions, manipulates the SDA
pin, monitors the SCL pin, and controls reset in the control part of the I
2
C bus.
7
6
5
4
3
2
1
0
0
1
1
1
1
1
0
1
R/W
R/W
R/W
R/W
R
R
R/W
R
Bit:
Initial value:
R/W:
BBSY
SCP
SDAO SDAOP SCLO
-
IICRST
-
Bit Bit
Name
Initial
Value
R/W Description
7 BBSY
0 R/W
Bus
Busy
Enables to confirm whether the I
2
C bus is occupied or
released and to issue start/stop conditions in master
mode. With the clocked synchronous serial format, this
bit is always read as 0. With the I
2
C bus format, this bit
is set to 1 when the SDA level changes from high to low
under the condition of SCL = high, assuming that the
start condition has been issued. This bit is cleared to 0
when the SDA level changes from low to high under the
condition of SCL = high, assuming that the stop
condition has been issued. Write 1 to BBSY and 0 to
SCP to issue a start condition. Follow this procedure
when also re-transmitting a start condition. Write 0 in
BBSY and 0 in SCP to issue a stop condition.
6
SCP
1
R/W Start/Stop Issue Condition Disable
Controls the issue of start/stop conditions in master
mode. To issue a start condition, write 1 in BBSY and 0
in SCP. A retransmit start condition is issued in the
same way. To issue a stop condition, write 0 in BBSY
and 0 in SCP. This bit is always read as 1. Even if 1 is
written to this bit, the data will not be stored.
Содержание Single-Chip Microcomputer SH7203
Страница 2: ...Rev 0 50 May 18 2006 Page ii of xxx ...
Страница 30: ...Rev 0 50 May 18 2006 Page xxx of xxx ...
Страница 52: ...Section 1 Overview Rev 0 50 May 18 2006 Page 22 of 1588 REJ09B0313 0050 ...
Страница 98: ...Section 2 CPU Rev 0 50 May 18 2006 Page 68 of 1588 REJ09B0313 0050 ...
Страница 128: ...Section 4 Clock Pulse Generator CPG Rev 0 50 May 18 2006 Page 98 of 1588 REJ09B0313 0050 ...
Страница 200: ...Section 6 Interrupt Controller INTC Rev 0 50 May 18 2006 Page 170 of 1588 REJ09B0313 0050 ...
Страница 242: ...Section 8 Cache Rev 0 50 May 18 2006 Page 212 of 1588 REJ09B0313 0050 ...
Страница 400: ...Section 9 Bus State Controller BSC Rev 0 50 May 18 2006 Page 370 of 1588 REJ09B0313 0050 ...
Страница 668: ...Section 11 Multi Function Timer Pulse Unit 2 MTU2 Rev 0 50 May 18 2006 Page 638 of 1588 REJ09B0313 0050 ...
Страница 696: ...Section 13 Watchdog Timer WDT Rev 0 50 May 18 2006 Page 666 of 1588 REJ09B0313 0050 ...
Страница 726: ...Section 14 Realtime Clock RTC Rev 0 50 May 18 2006 Page 696 of 1588 REJ09B0313 0050 ...
Страница 796: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 0 50 May 18 2006 Page 766 of 1588 REJ09B0313 0050 ...
Страница 876: ...Section 17 I2 C Bus Interface 3 IIC3 Rev 0 50 May 18 2006 Page 846 of 1588 REJ09B0313 0050 ...
Страница 1020: ...Section 19 Controller Area Network RCAN TL1 Rev 0 50 May 18 2006 Page 990 of 1588 REJ09B0313 0050 ...
Страница 1054: ...Section 21 D A Converter DAC Rev 0 50 May 18 2006 Page 1024 of 1588 REJ09B0313 0050 ...
Страница 1226: ...Section 23 USB 2 0 Host Function Module USB Rev 0 50 May 18 2006 Page 1196 of 1588 REJ09B0313 0050 ...
Страница 1294: ...Section 24 LCD Controller LCDC Rev 0 50 May 18 2006 Page 1264 of 1588 REJ09B0313 0050 ...
Страница 1386: ...Section 26 I O Ports Rev 0 50 May 18 2006 Page 1356 of 1588 REJ09B0313 0050 ...
Страница 1512: ...Section 30 List of Registers Rev 0 50 May 18 2006 Page 1482 of 1588 REJ09B0313 0050 ...
Страница 1598: ...Section 31 Electrical Characteristics Rev 0 50 May 18 2006 Page 1568 of 1588 REJ09B0313 0050 ...
Страница 1606: ...Appendix Rev 0 50 May 18 2006 Page 1576 of 1588 REJ09B0313 0050 ...
Страница 1618: ...Rev 0 50 May 18 2006 Page 1588 of 1588 REJ09B0313 0050 ...
Страница 1621: ......
Страница 1622: ...SH7203 Group Hardware Manual ...