RC82562EP Intel, RC82562EP Datasheet - Page 37
RC82562EP
Manufacturer Part Number
RC82562EP
Description
IC ETH 10/100 PLC DEV CTRL 64BGA
Manufacturer
Intel
Specifications of RC82562EP
Rohs Status
RoHS non-compliant
Controller Type
Ethernet Controller
Interface
IEEE 802.3
Voltage - Supply
3.135 V ~ 3.465 V
Mounting Type
Surface Mount
Package / Case
64-BGA
Current - Supply
-
Operating Temperature
-
Other names
832361
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6.2
6.2.1
Intel 8255x 10/100 Mbps Ethernet Controller Family Open Source Software Developer Manual
Table 8.
Initializing the LAN Controller
A hardware or software reset prepares the 8255x for normal operation. Since the PCI Specification
already provides automatic configuration of many critical parameters such as I/O, memory
mapping and interrupt assignment, the device is set to an operational default state after reset.
However, the device cannot transmit or receive frames until a Configure command is issued.
Different reset commands affect the controller in different ways as detailed by the table below.
Reset Commands
The phrase “Software Reset” will be used throughout this manual to indicate a complete reset using
the Port Reset command, unless specified otherwise. Port commands are discussed in detail in
Section 6.3.3, “PORT
LAN Controller Addressing Format
The 8255x supports a 32-bit enhanced linear addressing mode and 32-bit segmented addressing
mode. The 8255x accommodates both types of addressing schemes with the enhanced linear
addressing mode. The controller always calculates a physical address by adding the appropriate 32-
bit BAR (CU base or RU base) to a 32-bit offset. This allows a linear addressing scheme to be used
by setting the base address to zero and using the full 32-bit offset registers to indicate the linear
address. A 32-bit segmented scheme can be used as well by programming the appropriate 32-bit
base address register and using the lower 16 bits of the 32-bit offset. This is illustrated in the table
below.
Hardware reset. This occurs when the
Reset pin (RST#) is asserted. (This is
caused by turning the system on or by
pressing the system reset button.)
Software reset. (This is issued as Port
Reset command.)
Selective reset. (This is issued as Port
Selective Reset command.)
Self test. (This is issued as a Port Self
Test command.)
Reset Operation
Interface”.
Resets all internal registers. A full initialization sequence
is needed to make the device operational.
Resets all internal registers, except the PCI configuration
registers. A full initialization sequence is needed to make
the device operational.
Maintains PCI configuration, RU and CU base registers,
HDS size, error counters, configure, IA setup and
multicast setup command information. RU and CU are set
to the idle state. All other setup and configuration
information is lost.
Resets all internal registers except for the PCI
configuration registers. A full initialization sequence is
needed to make the device operational. A selective reset
is issued internally before the command is executed. A
software reset is issued internally after the command is
completed.
Effect on LAN Controller
Host Software Interface
29
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