Symbios SYM53C040 Enclosure Services Processor Technical Manual
5-1
Chapter 5
SFF-8067 Registers
This chapter contains descriptions of the SYM53C040 SFF-8067
registers. The SCSI/DMA registers, Two-Wire Serial registers,
Miscellaneous registers, and System registers are described in
and
through
. The term “set” is used to
refer to bits that are programmed to a binary one, while the terms “reset”
or “clear” are used to refer to bits that are programmed to binary zero.
Any bits marked as reserved should always be written to zero; mask all
information read from them. Reserved bit functions may change at any
time. Unless otherwise indicated, all bits in registers are active high, that
is, the feature is enabled by setting the bit. The bottom row of every
register diagram shows the default bit values, which are enabled after the
chip is powered on or reset.
summarizes the entire SYM53C040 register set.
Figure 5.1
Register Set Overview
0xFC00
0xFC1F
0xFC20
0xFCFF
0xFD00
0xFDFF
0xFE00
0xFEFF
0xFFFF
0xFF00
System Registers
Miscellaneous Registers
Two-Wire Serial Interface Registers
SFF-8067 Registers
SCSI Core and DMA Registers
Содержание Symbios SYM53C040
Страница 12: ...xii Preface...
Страница 90: ...4 18 SCSI and DMA Registers...
Страница 98: ...5 8 SFF 8067 Registers...
Страница 110: ...6 12 Two Wire Serial Registers...
Страница 126: ...7 16 Miscellaneous Registers...
Страница 160: ...8 34 System Registers...
Страница 184: ...9 24 Electrical Characteristics...
Страница 194: ...A 10 Register Summary...
Страница 214: ......