Section 17 Serial Communication Interface with FIFO (SCIF)
Rev. 1.00 Apr. 28, 2008 Page 510 of 994
REJ09B0452-0100
17.3.12 Modem Status Register (FMSR)
FMSR is a read-only register that indicates the status of or a change in the modem control pins.
Bit
Bit Name
Initial Value R/W
Description
7
DCD
Undefined
R
Data Carrier Detect
Indicates the inverted state of the
DCD
input pin.
6 RI
Undefined
R Ring
Indicator
Indicates the inverted state of the
RI
input pin.
5 DSR
Undefined
R
Data Set Ready
Indicates the inverted state of the
DSR
input pin.
4
CTS
Undefined
R
Clear to Send
Indicates the inverted state of the
CTS
input pin.
3
DDCD
0
R
Delta Data Carrier Indicator
Indicates a change in the
DCD
input signal after the
DDCD bit is read.
0: No change in the
DCD
input signal after FMSR
read
[Clearing condition]
FMSR read
1: A change in the
DCD
input signal after FMSR
read
[Setting condition]
A change in the
DCD
input signal
2
TERI
0
R
Trailing Edge Ring Indicator
Indicates a rise in the
RI
input signal after the TERI
bit is read.
0: No change in the
RI
input signal after FMSR read
[Clearing condition]
FMSR read
1: A rise in the
RI
input signal after FMSR read
[Setting condition]
A rise in the
RI
input pin
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...
Page 1020: ...Rev 1 00 Apr 28 2008 Page 994 of 994 REJ09B0452 0100...
Page 1023: ......
Page 1024: ...H8S 2117R Group Hardware Manual...