參數(shù)資料
型號(hào)： MT90210
廠商： Mitel Networks Corporation
英文描述： Multi-Rate Parallel Access Circuit
中文描述： 多速率電路并行訪問
文件頁(yè)數(shù)： 4/27頁(yè)
文件大小： 133K
代理商： MT90210
MT90210
Preliminary Information
2-148
58-59,
61-62,
64,
66-68
P0-P1,
P2-P3,
P4,
P5-P7
Parallel Input/Output Data Bus.
This 8 bit data bus is a bidirectional parallel port used to
perform 8-bit transactions between the MT90210 and the external dual port RAM. Data is
clocked in and out of the P0-P7 parallel port according to Figures 22 and 23.
70
Strobe
Strobe Output.
This output is typically connected to the Chip-enable input of the external
dual port RAM. It is kept low during all read cycles, stays high during inactive periods and
goes low for the last half of a memory write cycle.
72-73,
75- 77,
80-82,
84-85,
87,
89-90
A0-A1,
A2-A4,
A5-A7,
A8-A9,
A10,
A11-A12
External Memory Address Outputs A0-A12.
These 13 address output lines are provided
by the MT90210 to allow a direct connection to an external dual port RAM.
91
RBC
Read Data Block Complete (output)
. A transition on this output is used to notify the
external CPU that the MT90210 has finished reading the contents of one entire 125
μ
s
frame from the external dual port memory (e.g.; from addresses 0000h to 0FFFh in modes
3, 4 or 5). Whenever RBC toggles, the MT90210 starts reading the next half of the memory
(addresses 1000h to 1FFFh) while the local CPU updates the first half with more data to
be sent. RBC toggles every 125
μ
s. When this signal is low, the MT90210 is reading the
lower memory block.
94
WBC
Write Data Block Complete (Output).
A transition on this output is used to notify the
external CPU that the MT90210 has finished writing the contents of one entire 125
μ
s
frame into the external dual port memory (e.g; from addresses 0000h to 0FFFh in modes
3,4 or 5). Once WBC toggles, the local CPU can access the Dual port memory to get the
data while the MT90210 writes the contents of the next 125
μ
s frame into the other half
(addresses 1000h to 1FFFh) of the dual port memory. WBC toggles every 125
μ
s. When
this signal is low, the MT90210 is writing to the lower memory block.
4,16,
63, 71,
78, 86,
92, 99
V
DD
Supply Input.
+5V.
41, 55
V
DD2
Supply Input.
+5V.
5,10,
17, 23,
60, 65,
69, 74,
79,83,
88, 93,
98
V
SS
Ground.
28
V
SS2
Ground.
Pin Description (continued)
Pin
Name
Description
相關(guān)PDF資料
PDF描述
MT90210AL Multi-Rate Parallel Access Circuit
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT90210AL 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Multi-Rate Parallel Access Circuit
MT90220 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Octal IMA/UNI PHY Device
MT90220AL 制造商:Zarlink Semiconductor Inc 功能描述:I.C.
MT90220ALX01 制造商:Mitel Networks Corporation 功能描述:
MT90221 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Quad IMA/UNI PHY Device
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