Intel GD82559ER User Manual
Page 19
Datasheet
13
Networking Silicon — GD82559ER
4.
GD82559ER Media Access Control Functional
Description
4.1
82559ER Initialization
The 82559ER has four sources for initialization. They are listed according to their precedence:
1. ALTRST# Signal
2. PCI RST# Signal
3. Software Reset (Software Command)
4. Selective Reset (Software Command)
4.1.1
Initialization Effects on 82559ER Units
The following table shows the effect of each of the different initialization sources on major
portions of the 82559ER. The initialization sources are listed in order of precedence. For example,
any resource that is initialized by the Software Reset is also initialized by the D3 to D0 transition
and ALTRST# and PCI RST# but not necessarily by the selective reset.
ALTRST#
PCI RST#
ISOLATE
#
D3 to D0
Transition
Software
Reset
Selective
Reset
EEPROM read and
initialization
3
3
3
--
--
--
Loadable microcode
decoded/reset
3
3
--
3
3
--
MAC configuration reset and
multicast hash
3
3
3
3
3
--
Memory pointers and
mircomachine state reset
3
3
--
3
3
3
PCI Configuration register
reset
3
3
3
3
--
--
PHY configuration reset
3
3
--
--
--
--
Power management event
reset
3
Clear only
if no
auxiliary
power
present
--
--
--
--
Statistic counters reset
3
3
--
3
3
--