Section 16 CIR Interface
Rev. 1.00 Apr. 28, 2008 Page 474 of 994
REJ09B0452-0100
16.3.3 Receive
Status Register (CSTR)
CSTR indicates the data reception state of the CIR.
Bit Bit
Name
Initial
Value R/W Description
7
CIRBUSY
0
R
CIR Busy Flag
Indicates the data receive state of the CIR.
[Setting condition]
When the CIR starts data reception.
[Clearing condition]
When the CIR has finished data reception.
6
CIRRDRF
0
R
Receive Data Register Full
Indicates whether CIRRDR contains a receive data
or not. This bit cannot be modified.
[Setting condition]
When a receive data is stored into CIRRDR.
[Clearing condition]
When a receive data has been read from CIRRDR.
5 REPF 0 R/W
*
Repeat Detection Flag
Indicates a repeat is generated.
[Setting condition]
When a repeat is detected.
[Clearing condition]
When writing 0 after reading REPF = 1.
4 OVRF 0 R/W
*
Overrun Error Flag
Indicates CIRRDR overflows.
[Setting condition]
When the next data is stored in CIRRDR while
CIRRDR is full.
[Clearing condition]
When writing 0 after reading OVRF = 1.
Summary of Contents for H8S/2100 Series
Page 2: ...Rev 1 00 Apr 28 2008 Page ii of xxvi...
Page 54: ...Section 1 Overview Rev 1 00 Apr 28 2008 Page 28 of 994 REJ09B0452 0100...
Page 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
Page 158: ...Section 5 Interrupt Controller Rev 1 00 Apr 28 2008 Page 132 of 994 REJ09B0452 0100...
Page 244: ...Section 8 8 Bit PWM Timer PWMU Rev 1 00 Apr 28 2008 Page 218 of 994 REJ09B0452 0100...
Page 330: ...Section 10 16 Bit Timer Pulse Unit TPU Rev 1 00 Apr 28 2008 Page 304 of 994 REJ09B0452 0100...
Page 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Page 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
Page 706: ...Section 20 LPC Interface LPC Rev 1 00 Apr 28 2008 Page 680 of 994 REJ09B0452 0100...
Page 752: ...Section 21 FSI Interface Rev 1 00 Apr 28 2008 Page 726 of 994 REJ09B0452 0100...
Page 774: ...Section 23 RAM Rev 1 00 Apr 28 2008 Page 748 of 994 REJ09B0452 0100...
Page 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
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