Aeroflex Circuit Technology

SCD7000SC REV B 7/30/01 Plainview NY (516) 694-6700

19

Power Consumption

Parameter

Condition

CPU Clock Speed

150 MHz

200 MHz

210 MHz

225 MHz

VccInt

Power

(mWatts)

Standby

No SysAD bus activity

500

1000

1500

2000

Active

R4000 write protocol with no

FPU operation

(integer Instruction only)

2200

4400

2700

5400

2800

5600

3800

7600

Write re-issue or pipelined

writes with superscalar

(integer and floating point

instructions)

2550

5100

3150

6300

3300

6600

4250

8500

Note 1: Typical integer instruction mix and cache miss rates with worst case supply voltage.

Note 2: Worst case instruction mix with worst case supply voltage.

Note: I/O supply power is application dependant, but typically <10% of VccInt.

AC Electrical Characteristics – Clock Parameters

Parameter

Symbol

Test

Condition

CPU Clock Speed

Units

150 MHz

200 MHz

210 MHz

225 MHz

Min

Max

Min

Max

Min

Max

Min

Max

SysClock High

Transition < 5ns

3333

ns

SysClock Low

Transition < 5ns

3333

ns

SysClock Frequency

25

75

25

75

25

70

25

75

MHz

SysClock Period

40

40

40

40

ns

Clock Jitter for SysClock

±200

±200

±150

±150

ps

SysClock Rise Time

2222

ns

SysClock Fall Time

2222

ns

ModeClock Period

256

256

256

256

JTAG Clock Period

4444

Note:

Operation of the ACT 7000 is only guaranteed with the Phase Lock Loop enabled