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參數(shù)資料
| 型號： | ADSP-2188MBSTZ-266 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 4/40頁 |
| 文件大小： | 0K |
| 描述： | IC DSP CONTROLLER 16BIT 100LQFP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | ADSP-21xx |
| 類型： | 定點 |
| 接口： | 主機接口，串行端口 |
| 時鐘速率： | 66MHz |
| 非易失內(nèi)存： | 外部 |
| 芯片上RAM： | 256kB |
| 電壓 - 輸入/輸出： | 3.30V |
| 電壓 - 核心： | 2.50V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-LQFP |
| 供應(yīng)商設(shè)備封裝： | 100-LQFP（14x14） |
| 包裝： | 托盤 |
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REV. 0
–12–
ADSP-2188M
IACK Configuration
Mode D = 0 and in host mode:
IACK is an active, driven signal
and cannot be “wire OR’d.”
Mode D = 1 and in host mode:
IACK is an open drain and
requires an external pull-down, but multiple
IACK pins can be
“wire OR’d” together.
MEMORY ARCHITECTURE
The ADSP-2188M provides a variety of memory and peripheral
interface options. The key functional groups are Program Memory,
Data Memory, Byte Memory, and I/O. Refer to the following
figures and tables for PM and DM memory allocations in the
ADSP-2188M.
Program Memory
Program Memory (Full Memory Mode) is a 24-bit-wide
space for storing both instruction opcodes and data. The ADSP-
2188M has 48K words of Program Memory RAM on chip, and
the capability of accessing up to two 8K external memory over-
lay spaces using the external data bus.
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 16 bits wide only.
ACCESSIBLE WHEN
PMOVLAY = 2
0x2000 – 0x3FFF2
EXTERNAL
MEMORY
ACCESSIBLE WHEN
PMOVLAY = 1
0x2000 – 0x3FFF
PM MODE B = 0
INTERNAL
MEMORY
ACCESSIBLE WHEN
PMOVLAY = 7
ACCESSIBLE WHEN
PMOVLAY = 6
ACCESSIBLE WHEN
PMOVLAY = 5
ACCESSIBLE WHEN
PMOVLAY = 4
ACCESSIBLE WHEN
PMOVLAY = 0
ALWAYS
ACCESSIBLE
AT ADDRESS
0x0000 – 0x1FFF
0x2000 – 0x3FFF
PM (MODE B = 1)1
0x0000 – 0x1FFF2
EXTERNAL
MEMORY
ACCESSIBLE WHEN
PMOVLAY = 0
0x2000 – 0x3FFF
INTERNAL
MEMORY
ACCESSIBLE WHEN
PMOVLAY = 0
RESERVED
NOTES
1WHEN MODE B = 1, PMOVLAY MUST BE SET TO 0
2SEE TABLE III FOR PMOVLAY BITS
0x3FFF
8K
INTERNAL
0x0000
0x1FFF
0x2000
PROGRAM MEMORY
MODE B = 0
ADDRESS
8K INTERNAL
PMOVLAY = 0, 4, 5, 6, 7
OR
8K EXTERNAL
PMOVLAY = 1, 2
0x3FFF
8K
INTERNAL
0x0000
0x1FFF
0x2000
PROGRAM MEMORY
MODE B = 1
ADDRESS
8K INTERNAL
PMOVLAY = 0
Figure 4. Program Memory
Table III. PMOVLAY Bits
PMOVLAY
Memory
A13
A12:0
0, 4, 5, 6, 7
Internal
Not Applicable
1
External Overlay 1
0
13 LSBs of Address Between 0x2000 and 0x3FFF
2
External Overlay 2
1
13 LSBs of Address Between 0x2000 and 0x3FFF
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