4-42
Registers
Register: 0x0D
SCSI Status Zero (SSTAT0)
Read Only
ILF
SIDL Least Significant Byte Full
7
This bit is set when the least significant byte in the
contains data. Data is transferred
from the SCSI bus to the SCSI Input Data Latch register
before being sent to the DMA FIFO and then to the host
bus. The
register contains
SCSI data received asynchronously. Synchronous data
received does not flow through this register.
R
Reserved
6
OLF
SODL Least Significant Byte Full
5
This bit is set when the least significant byte in the
contains data. The SODL
register is the interface between the DMA logic and the
SCSI bus for asynchronous send operations. In the
asynchronous mode, data is transferred from the host
bus to the SODL register, and then to the SCSI bus. It is
possible to use this bit to determine how many bytes
reside in the device when an error occurs.
ARBIP
Arbitration in Progress
4
Arbitration in Progress (ARBIP = 1) indicates that the
LSI53C1000 has detected a Bus Free condition, asserted
SBSY, and asserted its SCSI ID onto the SCSI bus.
LOA
Lost Arbitration
3
When set, LOA indicates that the LSI53C1000 has
detected a bus free condition, arbitrated for the SCSI bus,
and lost arbitration due to another SCSI device asserting
the SSEL/ signal.
7
6
5
4
3
2
1
0
ILF
R
OLF
ARBIP
LOA
WOA
RST
SDP0
0
0
0
0
0
0
0
0
Содержание LSI53C1000
Страница 6: ...vi Preface...
Страница 16: ...xvi Contents...
Страница 28: ...1 12 Introduction...
Страница 234: ...4 124 Registers...
Страница 314: ...6 40 Specifications This page intentionally left blank...
Страница 318: ...6 44 Specifications This page intentionally left blank...
Страница 344: ...6 70 Specifications This page intentionally left blank...
Страница 350: ...6 76 Specifications Figure 6 42 LSI53C1000 329 Ball Grid Array Bottom view...
Страница 352: ...6 78 Specifications...
Страница 360: ...A 8 Register Summary...
Страница 376: ...IX 12 Index...