Datasheet

Section 14 IEBus™ Controller (IEB) [H8S/2258 Group]
Rev. 6.00 Mar. 18, 2010 Page 513 of 982
REJ09B0054-0600
Bit Bit Name
Initial
Value
R/W Description
5 SRQ 0 R Slave Transmission Request
Indicates whether or not the unit is in transmit request
status as a slave unit.
1: The unit is in transmit request status as a slave unit
[Setting condition]
When the CMX flag is cleared to 0 after the slave transmit
request command is issued.
0: The unit is not in transmit request status as a slave unit
[Clearing condition]
When a slave transmission has been completed.
4 SRE 0 R Slave Receive Status
Indicates the execution status in slave/broadcast reception.
1: Slave/broadcast reception is being executed
[Setting condition]
When the slave/broadcast reception is started while the RE
bit in IECTR is set to 1.
0: Slave/broadcast reception is not being executed
[Clearing condition]
When the slave/broadcast reception has been completed.
3 LCK 0 R Lock Status Indication
Set to 1 when a unit is locked by a lock request from the
master unit. IELA1 and IELA2 values are valid only when
this flag is set to 1.
1: A unit is locked
[Setting condition]
When data for the number of bytes specified by the
message length is not received after the control bits that
make the unit locked are received from the master unit.
(The LCK flag is set to 1 only when the message length
exceeds the maximum number of transfer bytes in one
frame. This flag is not set by completion of other errors.)
0: A unit is unlocked
[Clearing condition]
When an unlock condition is satisfied or when an unlock
command is issued.