82563EB datasheet(39/52 Pages) INTEL

39 / 52 page

82563EB/82564EB Gigabit Platform LAN Connect Networking Silicon

There are no required timing relationships between PHY_RESET_N, PHY_SLEEP, and either

PHY_PWR_GOOD, the power supply being stable, or the oscillator being stable. The 82563EB/

82564EB will come out of reset when both PHY_PWR_GOOD is asserted (1b) and

PHY_RESET_N is deasserted (1b). It will be active when PHY_PWR_GOOD is asserted (1b),

PHY_RESET_N is deasserted (1b), and PHY_SLEEP is deasserted (0b).

4.9

Power Consumption

The 82563EB/825654EB’s power consumption (Tables 34 through 37) is the sum of each port’s

power consumption. A port’s power consumption depends on whether the port’s logic, PHY, and

Kumeran are operational, and the 82563EB/825654EB’s operating speeds. These in turn, depend

on the following factors:

Table 33. Reset Specification

Title

Description

Min

Max

Units

PHY_PWR_GOOD pulse

Minimum pulse width for

LAN_PWR_GOOD

100

µs

Tppg

Minimum time PHY_PWR_GOOD must be

low after power supply is in operating

range

100

µs

Txoc

Time from oscillator stable to

PHY_PWR_GOOD assertion, when using

an external oscillator.

100

µs

Tpco

Time from PHY_PWR_GOOD assertion

until the 82563EB/82564EB outputs the

PHY_CLK_OUT.

350

µs

PHY_PWR_GOOD input

Powers off the entire chip (including PHY_CLK_OUT) when 0b. It has priority

over PHY_RESET_N or PHY_SLEEP.

PHY_RESET_N input

When 0b, the entire chip is held in reset except PHY_CLK_OUT.

PHY_SLEEP input

When 1b the entire chip is powered down, except PHY_CLK_OUT.

Port Disable Register

The port’s PHY and Kumeran can be disabled by writing a 1b to the “Disable

Port” bit of the “Power Management Control” register.

PHY Power Down

ThE 82563EB/82564EB can be powered down with an indication over the

Kumeran bus or by writing a 1b to the “Control Register’s” “Power Down” bit.

Link Down

When the link is required but the link is down the 82563EB/82564EB remains

in energy detect mode, attempting to detect energy from the link partner.

Speed

The 82563EB/82564EB uses progressively more power as the speed

increases from 10 Mb/s to 100 Mb/s to 1000 Mb/s. Speed is normally based on

auto-negotiation with the link partner, but may be forced or influenced by the

power state.

Power State

The power state can be used in conjunction with the “Low Power Link Up” and

“Auto-Negotiation 1000 Disable” to control the 82563EB/82564EB’s speed.

Kumeran Electrical Idle

Nothing is transmitted on the differential pairs.

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