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ADSP-2196MKCA-160X Datasheet(PDF) 5 Page - Analog Devices |
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ADSP-2196MKCA-160X Datasheet(HTML) 5 Page - Analog Devices |
5 / 68 page This information applies to a product under development. Its characteristics and specifications are subject to change with- out notice. Analog Devices assumes no obligation regarding future manufacturing unless otherwise agreed to in writing. 5 REV. PrA For current information contact Analog Devices at 800/262-5643 ADSP-2196 September 2001 35(/,0,1$5< 7(&+1,&$/ '$7$ within 64K word boundaries of each of the 256 memory pages, but these buffers may not cross page boundaries. Secondary registers duplicate all the primary registers in the DAGs; switching between primary and secondary registers provides a fast context switch. Efficient data transfer in the core is achieved with the use of internal buses: • Program Memory Address (PMA) Bus • Program Memory Data (PMD) Bus • Data Memory Address (DMA) Bus • Data Memory Data (DMD) Bus •DMA Address Bus •DMA Data Bus The two address buses (PMA and DMA) share a single external address bus, allowing memory to be expanded off-chip, and the two data buses (PMD and DMD) share a single external data bus. Boot memory space and I/O memory space also share the external buses. Program memory can store both instructions and data, per- mitting the ADSP-2196 to fetch two operands in a single cycle, one from program memory and one from data memory. The DSP’s dual memory buses also let the ADSP-219x core fetch an operand from data memory and the next instruction from program memory in a single cycle. DSP Peripherals Architecture The functional block diagram on page 1 shows the DSP’s on-chip peripherals, which include the external memory interface, Host port, serial ports, SPI-compatible ports, UART port, JTAG test and emulation port, timers, flags, and interrupt controller. These on-chip peripherals can connect to off-chip devices as shown in Figure 1. The ADSP-2196 has a 16-bit Host port with DMA capa- bility that lets external Hosts access on-chip memory. This 24-pin parallel port consists of a 16-pin multiplexed data/address bus and provides a low-service overhead data move capability. Configurable for 8- or 16-bits, this port provides a glueless interface to a wide variety of 8- and 16-bit microcontrollers. Two chip-selects provide Hosts access to the DSP’s entire memory map. The DSP is bootable through this port. The ADSP-2196 also has an external memory interface that is shared by the DSP’s core, the DMA controller, and DMA capable peripherals, which include the UART, SPORT0, SPORT1, SPORT2, SPI0, SPI1, and the Host port. The external port consists of a 16-bit data bus, a 22-bit address bus, and control signals. The data bus is configurable to provide an 8 or 16 bit interface to external memory. Support for word packing lets the DSP access 16- or 24-bit words from external memory regardless of the external data bus width. When configured for an 8-bit interface, the unused eight lines provide eight programmable, bidirectional gen- eral-purpose Programmable Flag lines, six of which can be mapped to software condition signals. The memory DMA controller lets the ADSP-2196 move data and instructions from between memory spaces: inter- nal-to-external, internal-to-internal, and external-to- external. On-chip peripherals can also use this controller for DMA transfers. The ADSP-2196 can respond to up to seventeen interrupts at any given time: three internal (stack, emulator kernel, and power-down), two external (emulator and reset), and twelve user-defined (peripherals) interrupts. Programmers assign Figure 1. ADSP-2196 System Diagram 6( 5 , $ / '( 9 , & ( 2 3 7 , 2 1 $ / ' $ 7 $ ± ,2 0 6 $' 63 %0 6 0 6 ± %5 %* $&. :5 5' $''5 ± '$ 7 $ ± '$ 7 $ ± $ ''5 ± '$ 7 $ ± &6 $&. :( 2( ( ; 7 ( 51 $/ 0(02 5 < 2 3 7 , 2 1 $ / '$ 7 $ ± $ ''5 ± '$ 7 $ ± &6 $&. :( 2( %2 2 7 0(02 5 < 2 3 7 , 2 1 $ / '$ 7 $ ± $ ''5 ± '$ 7 $ ± &6 $&. :( 2( ( ; 7 ( 51$/ , 2 0 ( 0 2 5 < 2 3 7 ,2 1 $ / $''5 $ ''5 ± '$ 7 $ ± &6 $&. :5 5' +2 6 7 35 2 & ( 6 6 2 5 2 3 7 ,2 1 $ / &6 $/ ( +$' ± +$ +& 0 6 +& , 2 0 6 +5' +: 5 + $&. +$ / ( +$& . B 3 7& / . 7) 6 '7 5&/ . 5) 6 '5 7& / . 7) 6 '7 5&/ . 5) 6 '5 7& / . 6 & . 7) 6 0 2 6 , '7 0 , 6 2 5& / . 6 & . 5) 6 0 2 6 , '5 0 , 6 2 5; ' 7; ' 5( 6 ( 7 -7 $ * 63 2 5 7 63 2 5 7 63 2 5 7 &/ . , 1 ;7$ / 06 ( / ± 3 ) ± ') 3 ) %< 3 $ 6 6 %0 2 ' ( ± 23 0 2 ' ( & / .2 87 7 0 5 ± 8 $57 63 , 63 , 6( 5 , $ / '( 9 , & ( 2 3 7 , 2 1 $ / 6( 5 , $ / '( 9 , & ( 2 3 7 , 2 1 $ / 8$ 5 7 '( 9 , & ( 2 3 7 , 2 1 $ / &/ 2 & . 25 &5 < 6 7 $ / 7,0 ( 5 28 7 2 5 &$ 3 7 8 5 ( &/ 2 & . 0 8 /7 ,3 /< $1' 5 $1* ( %2 2 7 $ 1' 23 02 ' ( %* + |
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