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參數資料
| 型號： | ADSP-2196MKSTZ-160 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 66/68頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DSP CONTROLLER 16BIT 144-LQFP |
| 標準包裝： | 1 |
| 系列： | ADSP-21xx |
| 類型： | 定點 |
| 接口： | 主機接口，SPI，SSP，UART |
| 時鐘速率： | 160MHz |
| 非易失內存： | ROM（48 kB） |
| 芯片上RAM： | 40kB |
| 電壓 - 輸入/輸出： | 3.30V |
| 電壓 - 核心： | 2.50V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 144-LQFP |
| 供應商設備封裝： | 144-LQFP（20x20） |
| 包裝： | 托盤 |
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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.
7
REV. PrA
For current information contact Analog Devices at 800/262-5643
ADSP-2196
September 2001
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On-Chip Memory Security
The ADSP-2196 has a maskable option to protect the
contents of on-chip memories from being accessed. When
the ROM protection is set, the on-chip ROM space cannot
be accessed by a hardware emulator.
External (Off-Chip) Memory
Each of the ADSP-2196’s off-chip memory spaces has a
separate control register, so applications can configure
unique access parameters for each space. The access param-
eters include read and write wait counts, waitstate
completion mode, I/O clock divide ratio, write hold time
extension, strobe polarity, and data bus width. The core
clock and peripheral clock ratios influence the external
memory access strobe widths. For more information, see
Clock Signals on page 14. The off-chip memory spaces are:
External memory space (MS3–0 pins)
I/O memory space (IOMS pin)
Boot memory space (BMS pin)
All of these off-chip memory spaces are accessible through
the External Port, which can be configured for 8-bit or
16-bit data widths.
External Memory Space
External memory space consists of four memory banks.
These banks can contain a configurable number of 64K
word pages. At reset, the page boundaries for external
memory have Bank0 containing pages 1
63, Bank1 con-
taining pages 64
127, Bank2 containing pages 128191,
and Bank3 containing Pages 192
254. The MS3–0
memory bank pins select Banks 3–0, respectively. The
external memory interface decodes the 8 MSBs of the DSP
program address to select one of the four banks. Both the
ADSP-219x core and DMA-capable peripherals can access
the DSP’s external memory space.
I/O Memory Space
The ADSP-2196 supports an additional external memory
called I/O memory space. This space is designed to support
simple connections to peripherals (such as data converters
and external registers) or to bus interface ASIC data regis-
ters. I/O space supports a total of 256K locations. The first
8K addresses are reserved for on-chip peripherals. The
upper 248K addresses are available for external peripheral
devices. The DSP’s instruction set provides instructions for
accessing I/O space. These instructions use an 18-bit
address that is assembled from an 8-bit I/O page (IOPG)
register and a 10-bit immediate value supplied in the
instruction. Both the ADSP-219x core and a Host (through
the Host Port Interface) can access I/O memory space.
Boot Memory Space
Boot memory space consists of one off-chip bank with 254
pages. The BMS memory bank pin selects boot memory
space. Both the ADSP-219x core and DMA-capable
Figure 2. ADSP-2196 Memory Map
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