adsp-21266skstz-2b Analog Devices, Inc., adsp-21266skstz-2b Datasheet - Page 7

• Manufacturer Part Number: adsp-21266skstz-2b
• Description: Sharc Embedded Processor
• Manufacturer: Analog Devices, Inc.

Table 4. Internal Memory Space (ADSP-21261)
Table 5. Internal Memory Space (ADSP-21262/ADSP-21266)
DMA Controller
The ADSP-2126x’s on-chip DMA controller allows zero-over­
head data transfers without processor intervention. The DMA
controller operates independently and invisibly to the processor
core, allowing DMA operations to occur while the core is simul­
taneously executing its program instructions. DMA transfers
can occur between the ADSP-2126x’s internal memory and its
serial ports, the SPI-compatible (serial peripheral interface)
port, the IDP (input data port), parallel data acquisition port
(PDAP), or the parallel port. Up to 22 channels of DMA are
available on the ADSP-2126x—one for the SPI interface, 12 via
IOP Registers 0x0000 0000–0003 FFFF
Long Word (64 Bits)
Block 0 SRAM
0x0004 0000–0x0004 1FFF
Reserved
0x0004 2000–0x0005 7FFF
Block 0 ROM
0x0005 8000–0x0002 FFFF
Reserved
0x0005 3000–0x0005 FFFF
Block 1 SRAM
0x0006 0000–0x0006 1FFF
Reserved
0x0006 2000–0x0007 7FFF
Block 1 ROM
0x0007 8000–0x0007 DFFF
Reserved
0x0007 E000–0x0007 FFFF
IOP Registers 0x0000 0000–0003 FFFF
Long Word (64 Bits)
Block 0 SRAM
0x0004 0000–0x0004 3FFF
Reserved
0x0004 4000–0x0005 7FFF
Block 0 ROM
0x0005 8000–0x0005 FFFF
Block 1 SRAM
0x0006 0000–0x0006 3FFF
Reserved
0x0006 4000–0x0007 7FFF
Block 1 ROM
0x0007 8000–0x0007 FFFF
Extended Precision Normal or
Instruction Word (48 Bits)
Block 0 SRAM
0x0008 0000–0x0008 2AAA
Reserved
Block 0 ROM
0x000A 0000–0x000A 7FFF
Reserved
Block 1 SRAM
0x000C 0000–0x000C 2AAA
Reserved
Block 1 ROM
0x000E 0000–0x000E 7FFF
Reserved
Extended Precision Normal or
Instruction Word (48 Bits)
Block 0 SRAM
0x0008 0000–0x0008 5555
Reserved
Block 0 ROM
0x000A 0000–0x000A AAAA
Block 1 SRAM
0x000C 0000–0x000C 5555
Reserved
Block 1 ROM
0x000E 0000–0x000E AAAA
Rev. E | Page 7 of 48 | July 2008
Normal Word (32 Bits)
Block 0 SRAM
0x0008 0000–0x0008 3FFF
Reserved
0x0008 4000–0x000A FFFF
Block 0 ROM
0x000B 0000–0x000B BFFF
Reserved
0x000B C000–0x000B FFFF
Block 1 SRAM
0x000C 0000–0x000C 3FFF
Reserved
0x000C 4000–0x000E FFFF
Block 1 ROM
0x000F 0000–0x000F BFFF
Reserved
0x000F C000–0x000F FFFF
Normal Word (32 Bits)
Block 0 SRAM
0x0008 0000–0x0008 7FFF
Reserved
0x0008 8000–0x000A FFFF
Block 0 ROM
0x000B 0000–0x000B FFFF
Block 1 SRAM
0x000C 0000–0x000C 7FFF
Reserved
0x000C 8000–0x000E FFFF
Block 1 ROM
0x000F 0000–0x000F FFFF
the serial ports, eight via the input data port, and one via the
processor’s parallel port. Programs can be downloaded to the
ADSP-2126x using DMA transfers. Other DMA features
include interrupt generation upon completion of DMA trans­
fers, and DMA chaining for automatic linked DMA transfers.
Digital Audio Interface (DAI)
The digital audio interface provides the ability to connect vari­
ous peripherals to any of the SHARC DSP’s DAI pins
(DAI_P20–1).
ADSP-21261/ADSP-21262/ADSP-21266
Short Word (16 Bits)
Block 0 SRAM
0x0010 0000–0x0010 7FFF
Reserved
0x0010 8000–0x0015 FFFF
Block 0 ROM
0x0016 0000–0x0017 7FFF
Reserved
0x0017 8FFF–0x0017 FFFF
Block 1 SRAM
0x0018 0000–0x0018 7FFF
Reserved
0x0018 8000–0x001D FFFF
Block 1 ROM
0x001E 0000–0x001F 7FFF
Reserved
0x0000
Short Word (16 Bits)
Block 0 SRAM
0x0010 0000–0x0010 FFFF
Reserved
0x0011 0000–0x0015 FFFF
Block 0 ROM
0x0016 0000–0x0017 FFFF
Block 1 SRAM
0x0018 0000–0x0018 FFFF
Reserved
0x0019 0000–0x001D FFFF
Block 1 ROM
0x001E 0000–0x001F FFFF