RM7000-250T View Datasheet(PDF) - PMC-Sierra

Part Name

Description

Manufacturer

RM7000-250T

RM7000™ Microprocessor with On-Chip Secondary Cache Datasheet Released

PMC-Sierra 

RM7000™ Microprocessor with On-Chip Secondary Cache Datasheet

Released

10.3 System Interface Parameters

CPU Speed

Parameter1 Symbol Test Conditions

200 MHz 250 MHz 266 MHz 300 MHz

Min Max Min Max Min Max Min Max Units

Data Output2,3 tDO

mode14..13 = 10 (fastest) 1.0 5.0 1.0 5.0 1.0 4.5 1.0 4.5 ns

mode14..13 = 11

1.0 5.5 1.0 5.5 1.0 5.0 1.0 4.5 ns

mode14..13 = 00

1.0 6.0 1.0 6.0 1.0 5.0 1.0 5.0 ns

mode14..13 = 01

(slowest)

1.0 7.0 1.0 6.5 1.0 6.0 1.0 5.5 ns

Data Setup4 tDS

trise = see above table 2.5

2.5

2.5

2.5

ns

Data Hold4

tDH

tfall = see above table

1.0

1.0

1.0

1.0

ns

Notes

1. Timings are measured from 0.425 x VccIO of clock to 0.425 x VccIO of signal for 3.3V I/O.

2. Capacitive load for all output timings is 50 pF.

3. Data Output timing applies to all signal pins whether tristate I/O or output only.

4. Setup and Hold parameters apply to all signal pins whether tristate I/O or input only.

5. Only mode 14:13 = 10 is tested and guaranteed.

10.4 Boot-Time Interface Parameters

Parameter7 Symbol

Mode Data

tDS

Setup

Mode Data Hold tDH

Test Condi-

tions

Min

4

0

Max

Units

SysClock cycles

SysClock cycles

Proprietary and Confidential to PMC-Sierra, Inc and for its Customer’s Internal Use

48

Document ID: PMC-2002175, Issue 1

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