Electronic Components Datasheet Search |
|
ADSP-2185NKST-320 Datasheet(PDF) 11 Page - Analog Devices |
|
ADSP-2185NKST-320 Datasheet(HTML) 11 Page - Analog Devices |
11 / 48 page ADSP-218xN Rev. A | Page 11 of 48 | August 2006 Program Memory (Host Mode) allows access to all internal memory. External overlay access is limited by a single external address line (A0). External program execution is not available in host mode due to a restricted data bus that is only 16 bits wide. Data Memory Data Memory (Full Memory Mode) is a 16-bit-wide space used for the storage of data variables and for memory-mapped con- trol registers. The ADSP-218xN series has up to 56K words of Data Memory RAM on-chip. Part of this space is used by 32 memory-mapped registers. Support also exists for up to two 8K external memory overlay spaces through the external data bus. All internal accesses complete in one cycle. Accesses to external memory are timed using the wait states specified by the DWAIT register and the wait state mode bit. Data Memory (Host Mode) allows access to all internal mem- ory. External overlay access is limited by a single external address line (A0). Memory-Mapped Registers (New to the ADSP-218xM and N series) ADSP-218xN series members have three memory-mapped reg- isters that differ from other ADSP-21xx Family DSPs. The slight modifications to these registers (Wait State Control, Program- mable Flag and Composite Select Control, and System Control) provide the ADSP-218xN’s wait state and BMS control features. Default bit values at reset are shown; if no value is shown, the bit is undefined at reset. Reserved bits are shown on a grey field. These bits should always be written with zeros. I/O Space (Full Memory Mode) ADSP-218xN series members support an additional external memory space called I/O space. This space is designed to sup- port simple connections to peripherals (such as data converters and external registers) or to bus interface ASIC data registers. I/O space supports 2048 locations of 16-bit wide data. The lower eleven bits of the external address bus are used; the upper three bits are undefined. Two instructions were added to the core ADSP-2100 Family instruction set to read from and write to I/O memory space. The I/O space also has four dedicated three-bit wait state registers, Table 4. PMOVLAY Bits Processor PMOVLAY Memory A13 A12– 0 ADSP-2184N No Internal Overlay Region Not Applicable Not Applicable Not Applicable ADSP-2185N 0 Internal Overlay Not Applicable Not Applicable ADSP-2186N No Internal Overlay Region Not Applicable Not Applicable Not Applicable ADSP-2187N 0, 4, 5 Internal Overlay Not Applicable Not Applicable ADSP-2188N 0, 4, 5, 6, 7 Internal Overlay Not Applicable Not Applicable ADSP-2189N 0, 4, 5 Internal Overlay Not Applicable Not Applicable All Processors 1 External Overlay 1 0 13 LSBs of Address Between 0x2000 and 0x3FFF All Processors 2 External Overlay 2 1 13 LSBs of Address Between 0x2000 and 0x3FFF Table 5. DMOVLAY Bits Processor DMOVLAY Memory A13 A12– 0 ADSP-2184N No Internal Overlay Region Not Applicable Not Applicable Not Applicable ADSP-2185N 0 Internal Overlay Not Applicable Not Applicable ADSP-2186N No Internal Overlay Region Not Applicable Not Applicable Not Applicable ADSP-2187N 0, 4, 5 Internal Overlay Not Applicable Not Applicable ADSP-2188N 0, 4, 5, 6, 7, 8 Internal Overlay Not Applicable Not Applicable ADSP-2189N 0, 4, 5, 6, 7 Internal Overlay Not Applicable Not Applicable All Processors 1 External Overlay 1 0 13 LSBs of Address Between 0x0000 and 0x1FFF All Processors 2 External Overlay 2 1 13 LSBs of Address Between 0x0000 and 0x1FFF |
Similar Part No. - ADSP-2185NKST-320 |
|
Similar Description - ADSP-2185NKST-320 |
|
|
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 |