ADSP-2187NBST-320 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADSP-2187NBST-320

DSP Microcomputer

Analog Devices 

ADSP-218xN Series

MEMORY ARCHITECTURE

The ADSP-218xN series provides a variety of memory and

peripheral interface options. The key functional groups are

Program Memory, Data Memory, Byte Memory, and I/O.

Refer to Figure 3 through Figure 8, Table 8 on page 14, and

Table 9 on page 14 for PM and DM memory allocations in

the ADSP-218xN series.

0X3FFF

PROGRAM MEMORY

MODEB = 1

RESERVED

0X2000

0X1FFF

0X0000

EXTERNAL PM

0X3FFF

0X2000

0X1FFF

0X1000

0X0FFF

0X0000

PROGRAM MEMORY

MODEB = 0

PM OVERLAY 1,2

(EXTERNAL PM)

PM OVERLAY 0

(RESERVED)

RESERVED

INTERNAL PM

DATA MEMORY

0X3FFF

0X3FE0

0X3FDF

0X3000

0X2FFF

0X2000

0X1FFF

0X0000

32 MEMORY-MAPPED

CONTROL REGISTERS

4064 RESERVED

WORDS

INTERNAL DM

DM OVERLAY 1,2

(EXTERNAL DM)

DM OVERLAY 0

(RESERVED)

Figure 3. ADSP-2184 Memory Architecture

0X3FFF

PROGRAM MEMORY

MODEB = 1

RESERVED

0X2000

0X1FFF

0X0000

EXTERNAL PM

0X3FFF

0X2000

0X1FFF

PROGRAM MEMORY

MODEB = 0

PM OVERLAY 1,2

(EXTERNAL PM)

PM OVERLAY 0

(RESERVED)

INTERNAL PM

0X0000

DATA MEMORY

0X3FFF

0X3FE0

0X3FDF

32 MEMORY-MAPPED

CONTROL REGISTERS

INTERNAL DM

0X2000

0X1FFF

0X0000

DM OVERLAY 1,2

(EXTERNAL DM)

DM OVERLAY 0

(INTERNAL DM)

Figure 4. ADSP-2185 Memory Architecture

0X3FFF

PROGRAM MEMORY

MODEB = 1

RESERVED

0X2000

0X1FFF

0X0000

EXTERNAL PM

0X3FFF

0X2000

0X1FFF

PROGRAM MEMORY

MODEB = 0

PM OVERLAY 1,2

(EXTERNAL PM)

PM OVERLAY 0

(RESERVED)

INTERNAL PM

0X0000

DATA MEMORY

0X3FFF

0X3FE0

0X3FDF

32 MEMORY-MAPPED

CONTROL REGISTERS

INTERNAL DM

0X2000

0X1FFF

0X0000

DM OVERLAY 1,2

(EXTERNAL DM)

DM OVERLAY 0

(RESERVED)

Figure 5. ADSP-2186 Memory Architecture

–12–

REV. 0

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