參數(shù)資料
型號(hào): MT90883
廠商: Zarlink Semiconductor Inc.
英文描述: TDM to Packet Processors
中文描述: TDM到分組處理器
文件頁(yè)數(shù): 66/97頁(yè)
文件大小: 702K
代理商: MT90883
MT90880/1/2/3
Data Sheet
66
Zarlink Semiconductor Inc.
Connecting to multiple external memory devices
The four devices are connected in banks, and the MT90880 device automatically switches to the next bank
when the address exceeds the range of the bank. Therefore the MT90880 needs to be informed during
initialisation which memory size is being used. This affects the number of active address signals and the total
available memory size, as shown in Table 17. Inactive address signals always output a low state.
Connection to the memory devices is identical to that for a single memory device (see Figure 29), except that
the four memory bank write enable signals, and the four memory bank output enable signals are connected to
each memory device in turn, e.g. RAM_WE[0]# to device 1, RAM_WE[1]# to device 2, etc. All other connections
and tie-offs are the same.
Table 29 - Total Available Memory Size, Using Four External SSRAM Devices
SSRAM size
Total available capacity using 4 devices
Active address
signals
16 Mbs
8 Mbytes
20:2
8 Mbs
4 Mbytes
19:2
4 Mbs
2 Mbytes
18:2
2 Mbs
1 Mbytes
17:2
1 Mbs
0.5 Mbytes
16:2
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參數(shù)描述
MT90883A 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
MT90883A/IG 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
MT90883BP1N 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
MT90883IG 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
MT9088IG 制造商:ZARLINK 制造商全稱(chēng):Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors