Scsi interrupt enable zero (sien0), Scsi, Interrupt enable zero (sien0) – Avago Technologies LSI53C825AE User Manual
Page 159: Scsi interrupt enable zero, Sien0)
Operating Registers
4-71
COM
LSI53C700 Family Compatibility
0
When the COM bit is cleared, the LSI53C825A behaves
in a manner compatible with the LSI53C700 family;
selection/reselection IDs are stored in both the
and
SCSI First Byte Received (SFBR)
registers.
When this bit is set, the ID is stored only in the
register, protecting the SFBR from
being overwritten if a selection/reselection occurs during
a DMA register-to-register operation. This bit is not
affected by a software reset.
Registers: 0x3C–0x3F (0xBC–0xBF)
Adder Sum Output (ADDER)
Read Only
ADDER
Adder Sum Output
[31:0]
This register contains the output of the internal adder,
and is used primarily for test purposes. The power-up
value for this register is indeterminate.
Register: 0x40 (0xC0)
SCSI Interrupt Enable Zero (SIEN0)
Read/Write
This register contains the interrupt mask bits corresponding to the
interrupting conditions described in the
register. An interrupt is masked by clearing the appropriate mask
bit. For more information on interrupts see
31
0
ADDER
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
7
6
5
4
3
2
1
0
M/A
CMP
SEL
RSL
SGE
UDC
RST
PAR
0
0
0
0
0
0
0
0