
EPC-7 Hardware Reference
SRIE
SYSRESET input enable. If set, assertion of VXI SYSRESET generates a
reset of the EPC-7. One use of this bit is having software reset the VXI sys-
tem (via bit SYSR) without resetting the EPC-7. This bit is read-only when
accessing this register from the VXI A16 space.
SYSC SYSCLK status bit. All writes to this register have the effect of clearing this
bit. The bit is then set if four rising edges of the VXI SYSCLK signal are
detected. This bit is intended to be used to detect that SYSCLK is being
generated on the backplane.
RDY
This RAM bit, if set while PASS=1, denotes that the EPC-7 is ready to ac-
cept operational commands. Setting the RSTP bit always clears this bit.
PASS If set (1), the EPC-7 has completed its selftest successfully. If this bit is
clear, the Test LED on the EPC-7 front panel is lit. The VXI SYSFAIL line
is asserted whenever PASS=0 and NOSF=0. This bit is read-only when
accessing this register from the VXI A16 space. Setting the RSTP bit
always clears this bit.
NOSF SYSFAIL inhibit. If set, the EPC-7 cannot assert the VXI SYSFAIL line.
RSTP
Reset EPC. Setting this bit will reset portions of the VME/VXI interface of
the EPC-7. Reset behavior is discussed in the next chapter.
7
Slave
Offset
Reg,
lower
1
1
1
1
1
1
1
1
8146
Slave Offset Reg, upper
Base
8147
7
This register defines the location of the EPC-7's slave memory.
Base
If A32=1 and SLE=1, this field defines the upper eight bits of the A32
addresses to which the EPC-7 responds. If A32=0 and SLE=1, the upper
two bits of this field define the upper two bits of the A24 addresses to
which the EPC-7 responds. That is, this field defines into which of 256
16MB A32 regions or 4 4MB A24 regions the EPC-7 is mapped.
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