
Maps and Registers
ATCA-7540 Installation and Use (6806871A01A)
123
1
Change in data set ready (DDSR) indicator
DDSR indicates that the DSR# input has changed state since
the last time it was read by the CPU. When DDSR is set and
the modem status interrupt is enabled, a modem status
interrupt is generated:
1: Change in state of DSR# input since last read
0: No change in state of DSR# input since last read
0
LPC: r/w
2
Trailing edge of the ring indicator (TERI) detector
TERI indicates that the RI# input to the chip has changed
from a low to a high level. When TERI is set and the modem
status interrupt is enabled, a modem status interrupt is
generated. Not supported.
0
LPC: r/w
3
Change in data carrier detect (DDCD) indicator
DDCD indicates that the DCD# input to the chip has changed
state since the last time it was read by the CPU. When DDCD
is set and the modem status interrupt is enabled, a modem
status interrupt is generated. Not supported.
0
LPC: r/w
4
Complement of the clear-to-send (CTS#) input
When the Asynchronous Communications Element (ACE) is
in diagnostic test mode (LOOP [MCR4] = 1), this bit is equal
to the MCR bit 1 (#).
Ext.
LPC: r
5
Complement of the data set ready (DSR#) input
When the ACE is in the diagnostic test mode (LOOP [MCR4]
= 1), this bit is equal to the MCR bit 0 (DTR#).
Ext.
LPC: r
6
Complement of the ring indicator (RI#) input
When the ACE is in the diagnostic test mode (LOOP [MCR4]
= 1), this bit is equal to the MCR bit 2 (OUT1#). Not
supported.
Ext.
LPC: r
7
Complement of the data carrier detect (DCD#) input
When the ACE is in the diagnostic test mode (LOOP [MCR4]
= 1), this bit is equal to the MCR bit 3 (OUT2#). Not
supported.
Ext.
LPC: r
Table 5-34. Modem Status Register (MSR) (continued)
LPC I/O Address: Base + 6
Bit Description
Default
Access
Содержание ATCA-7540
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Страница 28: ...About this Manual 28 ATCA 7540 Installation and Use 6806871A01A ...
Страница 34: ...Safety Notes 34 ATCA 7540 Installation and Use 6806871A01A ...
Страница 66: ...Hardware Preparation and Installation 66 ATCA 7540 Installation and Use 6806871A01A ...
Страница 276: ...Supported IPMI Commands 276 ATCA 7540 Installation and Use 6806871A01A ...
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