ADZS-21469-EZLITE【PDF 7/62 页】KIT EVAL EZ LITE ADSP-21469

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Preliminary Technical Data

ADSP-21462/ADSP-21465/ADSP-21467/ADSP-21469

to four separate devices to coexist, supporting any desired com-

bination of synchronous and asynchronous device types. Non

DDR2 DRAM external memory address space is shown in

External Memory Execution

In the ADSP-2146x, the program sequencer can execute code

directly from external memory bank 0 (SRAM, as well as DDR2

DRAM). This allows more options to a user in terms of code

Table 3. ADSP-21465W/ADSP-21467 Internal Memory Space

IOP Registers 0x0000 0000–0x0003 FFFF

Extended Precision Normal or

and data storage. With external execution, programs run at

slower speeds since 48-bit instructions are fetched in parts from

a 16-bit external bus coupled with the inherent latency of fetch-

ing instructions from DDR2 DRAM. VISA mode and SIMD

mode accesses are supported for DDR2 space.

Long Word (64 bits)

BLOCK 0 ROM

0x0004 0000–0x0004 7FFF

Reserved

0x0004 8000–0x0004 8FFF

BLOCK 0 RAM

0x0004 9000–0x0004 EFFF

Reserved

0x0004 F000–0x0004 FFFF

BLOCK 1 ROM

0x0005 0000–0x0005 7FFF

Reserved

0x0005 8000–0x0005 8FFF

BLOCK 1 RAM

0x0005 9000–0x0005 EFFF

Reserved

0x0005 F000–0x0005 FFFF

BLOCK 2 RAM

0x0006 0000–0x0006 3FFF

Reserved

0x0006 4000–0x0006 FFFF

BLOCK 3 RAM

0x0007 0000–0x0007 3FFF

Reserved

0x0007 4000–0x0007 FFFF

Instruction Word (48 bits)

BLOCK 0 ROM

0x0008 0000–0x0008 AAA9

Reserved

0x0009 0000–0x0009 1FFF

BLOCK 0 RAM

0x0008 C000-0x0009 3FFF

Reserved

0x0009 E000–0x0009 FFFF

BLOCK 1 ROM

0x000A 0000–0x000A AAA9

Reserved

0x000B 000–0x000B 1FFF

BLOCK 1 RAM

0x000A C000-0x000B 3FFF

Reserved

0x000B E000–0x000B FFFF

BLOCK 2 RAM

0x000C 0000–0x000C 5554

Reserved

0x000C 8000–0x000D FFFF

BLOCK 3 RAM

0x000E 0000–0x000E 5554

Reserved

0x000E 8000–0x000F FFFF

Normal Word (32 bits)

BLOCK 0 ROM

0x0008 0000–0x0008 FFFF

Reserved

0x0009 0000–0x0009 1FFF

BLOCK 0 RAM

0x0009 2000-0x0009 DFFF

Reserved

0x0009 E000–0x0009 FFFF

BLOCK 1 ROM

0x000A 0000–0x000A FFFF

Reserved

0x000B 0000–0x000B 1FFF

BLOCK 1 RAM

0x000B 2000-0x000B DFFF

Reserved

0x000B E000–0x000B FFFF

BLOCK 2 RAM

0x000C 0000-0x000C 7FFF

Reserved

0x000C 8000–0x000D FFFF

BLOCK 3 RAM

0x000E 0000–0x000E 7FFF

Reserved

0x000E 8000–0x000F FFFF

Short Word (16 bits)

BLOCK 0 ROM

0x0010 0000–0x0011 FFFF

Reserved

0x0012 0000–0x0012 3FFF

BLOCK 0 RAM

0x0012 4000–0x0013 BFFF

Reserved

0x0013 C000–0x0013 FFFF

BLOCK 1 ROM

0x0014 0000-0x0015 FFFF

Reserved

0x0016 0000-0x0016 3FFF

BLOCK 1 RAM

0x0016 4000-0x0017 BFFF

Reserved

0x0017 C000–0x0017 FFFF

BLOCK 2 RAM

0x0018 0000–0x0018 FFFF

Reserved

0x0019 0000–0x001B FFFF

BLOCK 3 RAM

0x001C 0000–0x001C FFFF

Reserved

0x001D 0000–0x001F FFFF

Rev. PrC

| Page 7 of 62 | January 2009

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