Ciprico Rimfire 3880 Benutzerhandbuch
21020285 D
User’s Guide
Chapter 2 Hardware Essentials
Page 2 - 14
Status Port
Status Port:
General
Format
After the RF3880 self-tests have completed successfully and the RDY bit is set
to one, the Status port is used to return general board information. The Status
Port will have the following format:
to one, the Status port is used to return general board information. The Status
Port will have the following format:
The meanings of the Status Port fields are as follows during normal operation:
ENT Entered
- This bit is used to signal when a new Single Command may
be issued to the adapter via a Channel Attention. The board is ready for another
Single Command write to the Channel Attention Port each time this bit value
toggles. It does not indicate that a command has completed, only that a new
Single Command may be initiated.
Single Command write to the Channel Attention Port each time this bit value
toggles. It does not indicate that a command has completed, only that a new
Single Command may be initiated.
Note
This bit does not toggle
for Command List
Channel Attentions.
This bit does not toggle
for Command List
Channel Attentions.
Initially this bit
⇒
0
After 1st Single Command Channel
Attention
Attention
⇒
1;
After 2nd Single Command Channel
Attention
Attention
⇒
0; etc.
RDY Ready
- This bit indicates when the adapter is ready to accept commands
after a reset has completed. During normal operation it should always be set to
one.
one.
0
⇒
No command can be accepted.
1
⇒
Ready to accept a command.
ERR Error
- This bit is used to signal that a catastrophic error occurred that
could not be reported through the command interface. (Example: Using an
invalid Parameter Block address which resulted in a VMEbus error. Typically
the AMBER LED will also light if this bit is set.)
invalid Parameter Block address which resulted in a VMEbus error. Typically
the AMBER LED will also light if this bit is set.)
0
⇒
Normal operation.
1
⇒
Error condition.
BIT
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Code
0
ERR
0
0
RDY ENT
Table 11: Status Port: General