LU82562GZ Intel, LU82562GZ Datasheet - Page 24

• Manufacturer Part Number: LU82562GZ
• Manufacturer: Intel

Specifications of LU82562GZ

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.45V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Lead Free Status / RoHS Status: Compliant

82562GZ — Networking Silicon
5.4.1
5.4.2
5.4.3
18
Table 6.
Table 7.
Auto Plugging Detection
The 82562GZ senses the link all the time. If it detects loss of any link activity for more than 6.6
seconds, it indicates to the Media Access Controller (MAC) an “unplugged state” by resetting the
SQL LAN Connect control bit. If the 82562GZ is in reduced power mode and link activity is
detected, the 82562GZ notifies the MAC (in less than 1 second) that it is in a “plugged state” by
setting the SQL LAN Connect control bit. Link activity detection is based on energy detection.
Dynamic Reduced Power
The 82562GZ can be configured to support dynamic reduced power. In the dynamic reduced power
mode, the 82562GZ transitions to reduced power mode when an unplugged state is detected. The
82562GZ will only return to full power if the reduced power bit on the LAN Connect is reset and a
plugged state is detected. However, if the 82562GZ is not configured to support dynamic reduced
power, the 82562GZ operates according to the LAN Connect power-down bit (in other words, the
82562GZ will operate in reduced power mode only if the LAN Connect power-down bit is set).
Configuration
The dynamic reduced power mode is configured through bit 13 of register 16. The default value is
disabled (0). The status of the 82562GZ can be read through bits 10:9 of register 16. When the
82562GZ is in reduced power mode, these two bits are set to 1b.
Register 16 (10 Hexadecimal): PLC Status, Control and Address Data
The 82562GZ can enter a reduced power state manually through bit 11 of register 0. This bit is
ORed with the LAN Connect power down bit, which allows the 82562GZ to enter a reduced power
state.
Register 0: Control Data
13
10
9
11
Bit
Bit
Dynamic Reduced Power Down
100BASE-TX Power Down
10BASE-T Power Down
Reduced Power Down
Name
Name
0 = Reduced power down disabled (normal
0 = Automatic reduced power down
1 = Automatic reduced power down
The 100BASE-TX Power Down bit indicates
the power state.
0 = Normal operation (default)
1 = Power down
The 10BASE-T Power Down bit indicates
the power state.
0 = Normal operation (default)
1 = Power down
1 = Reduced power down enabled
enabled
disabled (default)
operation; default)
Description
Description
Read/Write
Read Only
Read Only
Read/Write
Read/Write
Read/Write
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