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參數(shù)資料
| 型號： | STLC1502 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | VOICE OVER IP PROCESSOR |
| 中文描述： | IP語音處理器 |
| 文件頁數(shù)： | 16/81頁 |
| 文件大?。?/td> | 526K |
| 代理商： | STLC1502 |
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STLC1502
16/81
Figure 6: EDM block diagram
It is possible to connect up to 4 external chips with x8, x16, and x32 data bus. Each memory bank space is
8Mbytes big so that a standard 64Mbit DRAM device can be connected. It is not possible to use a single
32Mbytes memory device.
It is the responsibility of the ARM code to properly configure the EDM block to initialize the DRAM at startup.
The external memory is mapped by the EDM interface as shown in Fig. 7.
Figure 7: EDM memory map
In the following table there is the list of the available external signals of the EDM interface.
NAME
Signal type
Description
EDM_CS(3:0)
OUT
Chip Select. Asserted when the EDM
decodes the proper address space in order
to select the right external device. To be con-
nected to RAS signal in case of use of EDO
memories
EDM_CLK
OUT
SDRAM Memory clock (same as ARM
clock). Not used with EDO.
EDM_CLKEN
OUT
SDRAM clock enable. Not used with EDO.
External
DRAM
EDM
11800000
EDM_CS0
EDM_CS1
EDM_CS2
EDM_CS3
13FFFFFF
117FFFFF
11000000
10FFFFFF
10800000
107FFFFF
10000000
Reserved
11FFFFFF
12000000
10000000
13FFFFFF
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相關(guān)代理商/技術(shù)參數(shù) |
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| STLC1502D | 制造商:STMicroelectronics 功能描述:VOIP STRADIVARIUS 1 - Trays |
| STLC1502P | 制造商:STMicroelectronics 功能描述:VOICE OVER IP PROCESSOR - Trays |
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| STLC1512 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:NorthenLite⑩ G.lite BiCMOS Analog Front-End Circuit |
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