Mitsubishi DS907x SIP User Manual page 102

USER'S GUIDE
RPC STATUS REGISTER – STATUS (ADDRESS 0DAH) Figure 12–5
ST7 ST6
Bit Description:
RPS.7–4:
Initialization:
Read Access:
Write Access:
RPS.3:
Initialization:
Read Access:
Write Access:
RPS.2:
Initialization:
Read Access:
Write Access:
RPS.1:
Initialization:
Read Access:
Write Access:
RPS.0:
Initialization:
Read Access:
Write Access:
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ST5 ST4
General purpose status bits that can be written by the DS5001/2 and can be
read by the external host.
Cleared when RPCON=0.
Can be read by the DS5001/2 and host CPU when RPC mode is invoked.
Can be written by the DS5001/2 when RPC mode is invoked.
IA0
Stores the value of the external system A0 for the last DBBIN Write when
a valid write occurs (as determined by the IBF flag).
Cleared when RPC=0.
Can be read by the DS5001/2 and host CPU when in RPC mode.
Automatically written when a valid DBBIN Write occurs. Cannot be written
otherwise.
F0
General purpose flag written by the DS5001/2 and read by the external host.
Cleared when RPC=0.
Can be read by the DS5001/2 and host CPU when in RPC mode.
Can be written by the DS5001/2 when in RPC mode.
IBF
Input Buffer Full Flag is set following a write by the external host, and is
cleared following a read of the DBBIN by the DS5001/2.
Cleared when RPC=0.
Can be read by the DS5001/2 and host CPU when in RPC mode.
Written automatically as part of the RPC communication. Cannot be set by
the application software.
OBF
Output Buffer Full Flag is set following a write of the DBBOUT by the
DS5001/2, and is cleared following a read of the DBBOUT by the external
host.
Cleared when RPC=0.
Can be read by the DS5001/2 and host CPU when in RPC mode.
Written automatically as part of the RPC communication. Cannot be set by
the application software.
IAO FO
102
IBF OBF