參數(shù)資料
型號: ADSP-2185MBSTZ-266
廠商: Analog Devices Inc
文件頁數(shù): 38/40頁
文件大?。?/td> 0K
描述: IC DSP CONTROLLER 16BIT 100-LQFP
標(biāo)準(zhǔn)包裝: 1
系列: ADSP-21xx
類型: 定點(diǎn)
接口: 主機(jī)接口,串行端口
時鐘速率: 66MHz
非易失內(nèi)存: 外部
芯片上RAM: 80kB
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
其它名稱: ADSP-2185MBSTZ266
ADSP-2185MBSTZ266-ND
REV. 0
ADSP-2185M
–7–
Memory Interface Pins
The ADSP-2185M processor can be used in one of two modes: Full Memory Mode, which allows BDMA operation with full exter-
nal overlay memory and I/O capability, or Host Mode, which allows IDMA operation with limited external addressing capabilities.
The operating mode is determined by the state of the Mode C pin during
RESET and cannot be changed while the processor is running.
The following tables list the active signals at specific pins of the DSP during either of the two operating modes (Full Memory or
Host). A signal in one table shares a pin with a signal from the other table, with the active signal determined by the mode set. For the
shared pins and their alternate signals (e.g., A4/IAD3), refer to the package pinout tables.
Full Memory Mode Pins (Mode C = 0)
Pin Name
# of Pins
I/O
Function
A13:0
14
O
Address Output Pins for Program, Data, Byte, and I/O Spaces
D23:0
24
I/O
Data I/O Pins for Program, Data, Byte, and I/O Spaces (8 MSBs are also
used as Byte Memory Addresses.)
Host Mode Pins (Mode C = 1)
Pin Name
# of Pins
I/O
Function
IAD15:0
16
I/O
IDMA Port Address/Data Bus
A0
1
O
Address Pin for External I/O, Program, Data, or Byte Access
1
D23:8
16
I/O
Data I/O Pins for Program, Data, Byte, and I/O Spaces
IWR
1
I
IDMA Write Enable
IRD
1
I
IDMA Read Enable
IAL
1
I
IDMA Address Latch Pin
IS
1
I
IDMA Select
IACK
1
O
IDMA Port Acknowledge Configurable in Mode D; Open Drain
NOTE
1In Host Mode, external peripheral addresses can be decoded using the A0,
CMS, PMS, DMS, and IOMS signals.
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