SCSI Registers
4-35
Register: 0x07
General Purpose (GPREG)
Read/Write
A write to this register will cause the data written to be output to the
appropriate GPIO pin if it is set to output mode in the
register.
R
Reserved
[7:5]
GPIO
General Purpose I/O
[4:0]
These bits are programmed through the
register as inputs, outputs, or to
perform special functions. As an output, these pins can
be used to enable or disable external terminators. It is
also possible to program these signals as live inputs and
sense them through a SCRIPTS register to register Move
Instruction. GPIO[3:0] default as inputs and GPIO4
defaults as an output pin. When configured as inputs, an
internal pull-up is enabled.
LSI Logic software uses the GPIO[1:0] signals to access
serial EEPROM. GPIO1 is used as a clock, with the
GPIO0 pin serving as data.
LSI Logic software also reserves the use of GPIO[4:2]. If
there is a need to use GPIO[4:2], please check with
LSI Logic for additional information.
7
5
4
0
R
GPIO
x
x
x
0
x
x
x
x
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...