參數(shù)資料
型號： 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
文件頁數(shù)： 65/97頁
文件大?。?/td> 702K
代理商： MT90883
MT90880/1/2/3
Data Sheet
65
Zarlink Semiconductor Inc.
demanding applications, the MT9088x can connect to up to four external memory devices, with a total capacity
of up to 8 Mbytes.
Connecting to a single external memory devices
The diagram in Figure 28 shows how to connect the MT90880 up to a single PBSRAM device. The example
chosen is a Micron
TM
MT58L256L32P, an
8 Mbit "Syncburst
TM
" family SRAM. The clock to the memory is the 66
MHz system clock, used as the master clock to the MT90880 and the memory system.
The memory is permanently chip enabled, with all chip enable signals (CE#, CE2# and CE2) tied to an active
state. Read and write access is controlled by the MT90880 outputs RAM_OE[0]# and RAM_WE[0]#. The
MT90880 only performs 32 bit wide accesses to memory, therefore the memory's individual byte write signals
(BWa# to BWd#) are tied low. Write access to the full 32-bit word is controlled via the global write enable signal,
GW#.
Connection to a ZBT
device, such as the MT55L256L32P, is very similar, substituting the R/W# pin for the
Syncburst's GW#, and tying the control pins LBO# and CKE# low.
Figure 28 - Connecting the MT90880 to a Single External Memory Device
66 MHz
System Clock
V
DD
V
SS
MT9088x device
RAM_A[19:4]
RAM_A[3]
RAM_D[31:24]
RAM_ADSC#
RAM_WE[0]#
RAM_OE[0]#
S_CLK
RAM_A[2]
RAM_D[7:0]
RAM_D[15:8]
RAM_D[23:16]
Micron
TM
generic SRAM
e.g. MT58L256L32P
(256K x 32 bits Syncburst
TM
)
CLK
SA0
SA1
SA
ADSC#
GW#
OE#
DQd
DQc
DQb
DQa
ADV#
MODE
CE2
BWE#
ADSP#
ZZ
CE2#
BWa#
CE#
BWc#
BWd#
BWb#
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT90883A 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
MT90883A/IG 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
MT90883BP1N 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
MT90883IG 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
MT9088IG 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:TDM to Packet Processors
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