Section 20
LPC Interface (LPC)
Rev. 1.00 Apr. 28, 2008 Page 639 of 994
REJ09B0452-0100
•
STR1
R/W
Bit
Bit Name Initial Value Slave Host Description
7
6
5
4
DBU17
DBU16
DBU15
DBU14
0
0
0
0
R/W
R/W
R/W
R/W
R
R
R
R
Defined by User
The user can use these bits as necessary.
3 C/
D
1 0
R R
Command/Data
When the host writes to IDR1, bit 2 of the I/O
address is written into this bit to indicate whether
IDR1 contains data or a command.
0: Content of input data register (IDR1) is a data
1: Content of input data register (IDR1) is a
command
2
DBU12
0
R/W
R
Defined by User
The user can use this bit as necessary.
1
IBF1
0
R
R
Input Buffer Full
This bit is an internal interrupt source to the slave
(this LSI). The IBF1 flag setting and clearing
conditions are different when the fast Gate A20 is
used. For details, see table 20.5.
0: [Clearing condition]
When the slave reads IDR1
1: [Setting condition]
When the host writes to IDR1 in I/O write cycle
0 OBF1 0
R/(W)
*
R
Output Buffer Full
0: [Clearing conditions]
•
When the host reads ODR1 in I/O read cycle
•
When the slave writes 0 to the OBF1 bit
1: [Setting condition]
When the slave writes to ODR1
Note:
*
Only 0 can be written to clear the flag.
Содержание H8S/2100 Series
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Страница 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
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Страница 330: ...Section 10 16 Bit Timer Pulse Unit TPU Rev 1 00 Apr 28 2008 Page 304 of 994 REJ09B0452 0100...
Страница 354: ...Section 11 16 Bit Cycle Measurement Timer TCM Rev 1 00 Apr 28 2008 Page 328 of 994 REJ09B0452 0100...
Страница 380: ...Section 12 16 Bit Duty Period Measurement Timer TDP Rev 1 00 Apr 28 2008 Page 354 of 994 REJ09B0452 0100...
Страница 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Страница 494: ...Section 15 Serial Communication Interface SCI Rev 1 00 Apr 28 2008 Page 468 of 994 REJ09B0452 0100...
Страница 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
Страница 706: ...Section 20 LPC Interface LPC Rev 1 00 Apr 28 2008 Page 680 of 994 REJ09B0452 0100...
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Страница 774: ...Section 23 RAM Rev 1 00 Apr 28 2008 Page 748 of 994 REJ09B0452 0100...
Страница 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
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