AT91SAM9G46B-CU Просмотр технического описания (PDF) - Atmel Corporation

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AT91SAM9G46B-CU

SMART ARM-based Embedded MPU

Atmel Corporation 

Table 2-1. Signal Description List (Continued)

Signal Name

Function

Active Reference

Type Level Voltage Comments

DDR Memory Interface - DDR2/LPDDR Controller - DDRSDRC0

DDR_D0–DDR_D15

Data Bus

I/O

VDDIOM0 Pulled-up input at reset

DDR_A0–DDR_A13

Address Bus

Output

VDDIOM0 0 at reset

DDR_CLK-#DDR_CLK

DDR Differential Clock Input

Output

VDDIOM0

DDR_CKE

DDR Clock Enable

Output High VDDIOM0

DDR_CS

DDR Chip Select

Output Low VDDIOM0

DDR_WE

DDR Write Enable

Output Low VDDIOM0

DDR_RAS-DDR_CAS

Row and Column Signal

Output Low VDDIOM0

DDR_DQM[0..1]

Write Data Mask

Output

VDDIOM0

DDR_DQS[0..1]

Data Strobe

Output

VDDIOM0

DDR_BA0–DDR_BA1

Bank Select

Output

VDDIOM0

DDR_VREF

Reference Voltage

Input

VDDIOM0

External Bus Interface - EBI

D0–D31

Data Bus

I/O

VDDIOM1 Pulled-up input at reset

A0–A25

Address Bus

Output

VDDIOM1 0 at reset

NWAIT

External Wait Signal

Input Low VDDIOM1

EBI - Static Memory Controller - SMC

NCS0–NCS5

Chip Select Lines

Output Low VDDIOM1

NWR0–NWR3

Write Signal

Output Low VDDIOM1

NRD

Read Signal

Output Low VDDIOM1

NWE

Write Enable

Output Low VDDIOM1

NBS0–NBS3

Byte Mask Signal

Output Low VDDIOM1

EBI - CompactFlash Support

CFCE1–CFCE2

CompactFlash Chip Enable

Output Low VDDIOM1

CFOE

CompactFlash Output Enable

Output Low VDDIOM1

CFWE

CompactFlash Write Enable

Output Low VDDIOM1

CFIOR

CompactFlash IO Read

Output Low VDDIOM1

CFIOW

CompactFlash IO Write

Output Low VDDIOM1

CFRNW

CompactFlash Read Not Write

Output

VDDIOM1

CFCS0–CFCS1

CompactFlash Chip Select Lines

Output Low VDDIOM1

EBI - NAND Flash Support

NANDCS

NAND Flash Chip Select

Output Low VDDIOM1

NANDOE

NAND Flash Output Enable

Output Low VDDIOM1

NANDWE

NAND Flash Write Enable

Output Low VDDIOM1

6

SAM9G46 Series [DATASHEET]

Atmel-11028G-ATARM-SAM9G46-Datasheet_08-Dec-15

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