AD21465WBBZ3 datasheet(7/60 Pages) AD

номер детали	AD21465WBBZ3

подробное описание детали	SHARC Processor material that is subject to change without notice

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ADSP-21462W/ADSP-21465W/ADSP-21467

Preliminary Technical Data

Rev. PrA

|

Page 7 of 60

|

November 2008

External Memory Execution

In the ADSP-21462W/ADSP-21465W/ADSP-21467, the pro-

gram 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 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 cou-

pled with the inherent latency of fetching instructions from

DDR2 DRAM. VISA mode and SIMD mode accesses are sup-

ported for DDR2 space. However, external memory execution

from DDR2 space is different for VISA and non-VISA mode.

DDR2 Support

The ADSP-21462W/ADSP-21465W/ADSP-21467 supports a

16-bit DDR2 interface operating at a maximum frequency of

half the core clock. Execution from external memory is sup-

ported. External memory devices up to 2 Gbits in size can be

supported. Delay line DMA functionality supported.

DDR2 DRAM Controller

The DDR2 DRAM controller provides an 16-bit interface to up

to four separate banks of industry-standard DDR2 DRAM

devices. Fully compliant with the DDR2 DRAM standard, each

bank can has its own memory select line (DDR2_CS3-

DDR2_CS0), and can be configured to contain between 32M

bytes and 256M bytes of memory. DDR2 DRAM external mem-

ory address space is shown in Table 5

A set of programmable timing parameters is available to config-

ure the DDR2 DRAM banks to support memory devices.

Table 3. ADSP-21462W/ADSP-21465W/ADSP-21467 Internal Memory Space

IOP Registers 0x0000 0000–0x0003 FFFF

Long Word (64 bits)

Extended Precision Normal or

Instruction Word (48 bits)

Normal Word (32 bits)

Short Word (16 bits)

BLOCK 0 ROM

0x0004 0000–0x0004 7FFF

BLOCK 0 ROM

0x0008 0000–0x0008 AAA9

BLOCK 0 ROM

0x0008 0000–0x0008 FFFF

BLOCK 0 ROM

0x0010 0000–0x0011 FFFF

Reserved

0x0004 8000–0x0004 8FFF

Reserved

0x0009 0000–0x0009 1FFF

Reserved

0x0009 0000–0x0009 1FFF

Reserved

0x0012 0000–0x0012 3FFF

BLOCK 0 RAM

0x0004 9000–0x0004 EFFF

BLOCK 0 RAM

0x0008 C000-0x0009 3FFF

BLOCK 0 RAM

0x0009 2000-0x0009 DFFF

BLOCK 0 RAM

0x0012 4000–0x0013 BFFF

Reserved

0x0004 F000–0x0004 FFFF

Reserved

0x0009 E000–0x0009 FFFF

Reserved

0x0009 E000–0x0009 FFFF

Reserved

0x0013 C000–0x0013 FFFF

BLOCK 1 ROM

0x0005 0000–0x0005 7FFF

BLOCK 1 ROM

0x000A 0000–0x000A AAA9

BLOCK 1 ROM

0x000A 0000–0x000A FFFF

BLOCK 1 ROM

0x0014 0000-0x0015 FFFF

Reserved

0x0005 8000–0x0005 8FFF

Reserved

0x000B 000–0x000B 1FFF

Reserved

0x000B 0000–0x000B 1FFF

Reserved

0x0016 0000-0x0016 3FFF

BLOCK 1 RAM

0x0005 9000–0x0005 EFFF

BLOCK 1 RAM

0x000A C000-0x000B 3FFF

BLOCK 1 RAM

0x000B 2000-0x000B DFFF

BLOCK 1 RAM

0x0016 4000-0x0017 BFFF

Reserved

0x0005 F000–0x0005 FFFF

Reserved

0x000B E000–0x000B FFFF

Reserved

0x000B E000–0x000B FFFF

Reserved

0x0017 C000–0x0017 FFFF

BLOCK 2 RAM

0x0006 0000–0x0006 3FFF

BLOCK 2 RAM

0x000C 0000–0x000C 5554

BLOCK 2 RAM

0x000C 0000-0x000C 7FFF

BLOCK 2 RAM

0x0018 0000–0x0018 FFFF

Reserved

0x0006 4000–0x0006 FFFF

Reserved

0x000C 8000–0x000D FFFF

Reserved

0x000C 8000–0x000D FFFF

Reserved

0x0019 0000–0x001B FFFF

BLOCK 3 RAM

0x0007 0000–0x0007 3FFF

BLOCK 3 RAM

0x000E 0000–0x000E 5554

BLOCK 3 RAM

0x000E 0000–0x000E 7FFF

BLOCK 3 RAM

0x001C 0000–0x001C FFFF

Reserved

0x0007 4000–0x0007 FFFF

Reserved

0x000E 8000–0x000F FFFF

Reserved

0x000E 8000–0x000F FFFF

Reserved

0x001D 0000–0x001F FFFF

Аналогичный номер детали - AD21465WBBZ3

производитель	номер детали	датащи	подробное описание детали
Vanlong Technology Co.,...	AD2140F60DCA	48Kb / 1P	Small and light size
Vanlong Technology Co.,...	AD2140F60HCA	48Kb / 1P	Small and light size
Analog Devices	AD21477WYCPZ1XX	1Mb / 76P	SHARC Processor REV. B
	AD21477WYSWZ1AXX	1Mb / 76P	SHARC Processor REV. B
	AD21478WYCPZ1XX	1Mb / 76P	SHARC Processor REV. B

More results

Аналогичное описание - AD21465WBBZ3

производитель	номер детали	датащи	подробное описание детали
Analog Devices	ADSP-21469	1Mb / 56P	SHARC Processor material that is subject to change without notice Rev. PrB
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	1418JC7	154Kb / 1P	DATA SUBJECT TO CHANGE WITHOUT NOTICE
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	EJ444	134Kb / 1P	Data subject to change without notice

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