ADSP-21469BBC-3 Просмотр технического описания (PDF) - Analog Devices

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производитель

ADSP-21469BBC-3

SHARC Processor

Analog Devices 

ADSP-21467/ADSP-21469

PIN FUNCTION DESCRIPTIONS

Use the termination descriptions in Table 9 when not using the

DDR2 or MLB interfaces.

Warning: System designs must comply with these termination

rules to avoid causing issues of quality, reliability, and power

leakage at these pins.

Table 9. Unused Pin Terminations

Pin Name

Unused Termination

DDR2_CKE, DDR2_CS, DDR2_DM, DDR2_DQSx,

DDR2_DQSx, DDR2_RAS, DDR2_CAS,

DDR2_WE, DDR2_CLKx, DDR2_CLKx

DDR2_ADDR, DDR2_BA, DDR2_DATA

VDD_DDR21

VREF

MLBCLK, MLBDAT, MLBSIG, MLBDO, MLBSO

Leave floating.

Internally three-state by setting the DIS_DDR2CTL bit of the DDR2CTL0 register

Connect to the VDD_INT supply

Leave floating/unconnected

Available on automotive models only. In standard products using silicon revision 0.2

and above connect to ground (GND). In standard products using silicon revisions

previous to revision 0.2, leave these pins floating if unused.

1 When the DDR2 controller is not used power down the receive path by setting the PWD bits of the DDR2PADCTLx register.

Rev. B | Page 13 of 76 | March 2013

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