 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
ADSP-21161N Datasheet(PDF) 6 Page - Analog Devices |
|
||||||||||||||||||||||||||||||
ADSP-21161N Datasheet(HTML) 6 Page - Analog Devices |
|
|
6 / 60 page  ADSP-21161N –6– REV. A PM bus, with one dedicated to each memory block, assures single-cycle execution with two data transfers. In this case, the instruction must be available in the cache. Off-Chip Memory and Peripherals Interface The ADSP-21161N’s external port provides the processor’s interface to off-chip memory and peripherals. The 62.7-M word off-chip address space (254.7-M word if all SDRAM) is included in the ADSP-21161N’s unified address space. The separate on- chip buses—for PM addresses, PM data, DM addresses, DM data, I/O addresses, and I/O data—are multiplexed at the external port to create an external system bus with a single 24-bit address bus and a single 32-bit data bus. Every access to external memory is based on an address that fetches a 32-bit word. When fetching an instruction from external memory, two 32-bit data locations are being accessed for packed instructions. Unused link port lines can also be used as additional data lines DATA15 –DATA0, allowing single-cycle execution of instructions from external memory, at up to 100 MHz. Figure 3 on Page 7 shows the alignment of various accesses to external memory. The external port supports asynchronous, synchronous, and syn- chronous burst accesses. Synchronous burst SRAM can be interfaced gluelessly. The ADSP-21161N also can interface glue- lessly to SDRAM. Addressing of external memory devices is facilitated by on-chip decoding of high-order address lines to generate memory bank select signals. The ADSP-21161N provides programmable memory wait states and external memory acknowledge controls to allow interfacing to memory and peripherals with variable access, hold, and disable time requirements. SDRAM Interface The SDRAM interface enables the ADSP-21161N to transfer data to and from synchronous DRAM (SDRAM) at the core clock frequency or at one-half the core clock frequency. The Figure 2. Memory Map 0x000A 0000 - 0x000A 7FFF (BLK 1) 0x0002 8000 - 0x0002 9FFF (BLK 1) 0x0005 0000 - 0x0005 3FFF (BLK 1) 0x0010 0000 - 0x0011 FFFF 0x0004 0000 - 0x0004 3FFF (BLK 0) 0x0008 0000 - 0x0008 7FFF (BLK 0) 0x0012 0000 - 0x0013 FFFF 0x0014 0000 - 0x0015 FFFF 0x0016 0000 - 0x0017 FFFF 0x001A 0000 - 0x001B FFFF 0x0000 0000 - 0x0001 FFFF 0x0002 0000 - 0x0002 1FFF (BLK 0) 0x0020 0000 BANK 1 MS0 BANK 2 MS1 BANK 3 MS2 MS3 IOP REGISTERS LONG WORD ADDRESSING SHORT WORD ADDRESSING NORMAL WORD ADDRESSING ADDRESS BANK 0 0x03FF FFFF (SDRAM) 0x00FF FFFF (NON-SDRAM) 0x0400 0000 0x07FF FFFF (SDRAM) 0x04FF FFFF (NON-SDRAM) 0x0800 0000 0x0BFF FFFF (SDRAM) 0x08FF FFFF (NON-SDRAM) 0x0C00 0000 0x0FFF FFFF (SDRAM) 0x0CFF FFFF (NON-SDRAM) NOTE: BANK SIZES ARE FIXED 0x0018 0000 - 0x0019 FFFF INTERNAL MEMORY SPACE MULTIPROCESSOR MEMORY SPACE ADDRESS IOP REGISTERS OF ADSP-21161N WITH ID = 001 IOP REGISTERS OF ADSP-21161N WITH ID = 010 IOP REGISTERS OF ADSP-21161N WITH ID = 011 IOP REGISTERS OF ADSP-21161N WITH ID = 100 IOP REGISTERS OF ADSP-21161N WITH ID = 101 IOP REGISTERS OF ADSP-21161N WITH ID = 110 RESERVED 0x001C 0000 0x001F FFFF EXTERNAL MEMORY SPACE |
Similar Part No. - ADSP-21161N |
|
Similar Description - ADSP-21161N |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
