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March 31, 2008

IDT80KSW0004

Datasheet

12 Typical Power Figures

Typical power draw for the 80KSW0004 is approximately 2.7W total for all ports enabled as 3 4x @ 3.125G under 50% switch load. The following table

provides power figures on a per-block basis. An estimate of the device power figure for a given application usage can be determined by using the

"CPS Power Calculator" modeling tool available on www.IDT.com

Table 7 Typical Power Figures

Condition: Vdd = 1.2V, Vdds = 1.2V, Vdda = 1.2V, Vdd3 = 3.3V @ Room temperature

25oC

Maximum peak sustained power draw for the 80KSW0004 is 3.5W total (2.23W for VDD, 0.61W for VDDS, 0.42W for VDDA and 0.26W for VDD3) for all

ports enabled as 12 1x @ 3.125G under 100% switch load at the max operational voltage specification(1.2V+5%=1.26V, 3.3V+5%=3.45V) across full

temperature and process range.

Description

Type

Units

Supply

Comments

SerDes 1x @ 1.25G

45

mW

VDDS, VDDA

Analog SerDes power consumption (VDDS and VDDA). This does not

include the sRIO quad power consumption.

SerDes 1x @ 2.5G

60

mW

VDDS, VDDA

Analog SerDes power consumption (VDDS and VDDA). This does not

include the sRIO quad power consumption.

SerDes 1x @ 3.125G

75

mW

VDDS, VDDA

Analog SerDes power consumption (VDDS and VDDA). This does not

include the sRIO quad power consumption.

SerDes 4x @ 1.25G

200

mW

VDDS, VDDA

Analog SerDes power consumption (VDDS and VDDA). This does not

include the sRIO quad power consumption.

SerDes 4x @ 2.5G

220

mW

VDDS, VDDA

Analog SerDes power consumption (VDDS and VDDA). This does not

include the sRIO quad power consumption.

SerDes 4x @ 3.125G

245

mW

VDDS, VDDA

Analog SerDes power consumption (VDDS and VDDA). This does not

include the sRIO quad power consumption.

JTAG Block Enable

100

mW

VDD, VDD3

Configuration Register Access only. Max interface speed(10MHz).

I2C Block Enable

20

mW

VDD, VDD3

Configuration Register Access only. Max interface speed (400KHz).

Switch Block (max traffic)

312

mW

VDD

Switch block only. All ports enabled and sending traffic at max aggre-

gate throughput for the switch block.

Standy Power @1.25G

1286

mW

VDD

Part powered up, reset, all links up (reset configuration), no traffic

Standy Power @1.25G

214

mW

VDD3

Part powered up, reset, all links up (reset configuration), no traffic

Standy Power @1.25G

383, 270

mW

VDDS, VDDA

Part powered up, reset, all links up (reset configuration), no traffic

Quiescent Power

1200

mW

VDD

Minimum possible operational power draw. All ports disable, I2C and

JTAG signals static.

Quiescent Power

214

mW

VDD3

Minimum possible operational power draw. All ports disable, I2C and

JTAG signals static.

Quiescent Power

37, 32

mW

VDDS, VDDA

Minimum possible operational power draw. All ports disable, I2C and

JTAG signals static.

Reset Power

324

mW

VDD

Peak power during RESET of the device.

Reset Power

210

mW

VDD3

Peak power during RESET of the device.

Reset Power

35, 27

mW

VDDS, VDDA

Peak power during RESET of the device.

Peak sustained Power

1858

mW

VDD

All sRIO ports enabled at maximum speed, maximum traffic to the

switch.

Peak sustained Power

214

mW

VDD3

All sRIO ports enabled at maximum speed, maximum traffic to the

switch.

Peak sustained Power

512, 349

mW

VDDS, VDDA

All sRIO ports enabled at maximum speed, maximum traffic to the

switch