參數(shù)資料
型號(hào)： MT8986APR1
廠商： Toshiba Corporation
英文描述： CMOS ST-BUS Family Multiple Rate Digital Switch
中文描述： 意法半導(dǎo)體的CMOS總線家庭多速率數(shù)字開關(guān)
文件頁數(shù)： 15/46頁
文件大?。?/td> 765K
代理商： MT8986APR1
MT8986
Data Sheet
15
Zarlink Semiconductor Inc.
Table 6 - Use of STA Bits for Identical I/O Data Rate Operation
* - only in the 44 pin packages.
** - for Data Memory Read operations A0 is not required since two nibbles are provided per read access.
Table 7 - Use of STA Bits for Different I/O Data Rate Operation
Note: In rate conversion applications, Data Memory subsections have different sizes than Connection Memory subsections. This
implies that different address inputs are used to select individual positions within the subsections for each type of memory.
2 Mb/s *
16x8 *
STA3, STA2, STA1,
STA0
STA2, STA1, STA0
A4, A3, A2, A1, A0
4 Mb/s
4x4
STA1, STA0
STA1, STA0
A6, A4, A3, A2, A1, A0
4 Mb/s
8x4
STA2, STA1, STA0
STA1, STA0
A6, A4, A3, A2, A1, A0
8 Mb/s
2x2
STA0
STA0
A7, A6, A4, A3, A2, A1, A0
Nibble Switch
(2 Mb/s)
8x4
STA2, STA1, STA0
STA1, STA0
A6, A4, A3, A2, A1, A0 **
Different
I/O
Rate
Input x
Output
Streams
Config.
STA bits used to
select
Data
Memory
subsections
STA bits used to
select
Connection
Memory
subsections
Input Address pins used to
access individual Data
Memory
positions within the
selected subsection
Input Address pins used to
access individual
Connection Memory
positions within the
selected subsection
2 Mb/s to 4
Mb/s
8x4
STA2, STA1,
STA0
STA1, STA0
A4, A3, A2, A1, A0
A6,
A4, A3, A2, A1, A0
2 Mb/s to 8
Mb/s
8x2
STA2, STA1,
STA0
STA0
A4, A3, A2, A1, A0
A7, A6, A4, A3, A2, A1, A0
4 Mb/s to 2
Mb/s
4x8
STA1, STA0
STA2, STA1,
STA0
A6,
A4, A3, A2, A1, A0
A4, A3, A2, A1, A0
8 Mb/s to 2
Mb/s
2x8
STA0
STA2, STA1,
STA0
A7, A6, A4, A3, A2, A1, A0 A4, A3, A2, A1, A0
Identical
I/O
Rate
# of Input x
Output
Streams
STA bits used to
select subsections of
the Data
Memory
STA bits used to
select subsections of
the Connection
Memory
Input Address pins used to
select individual Connection
and Data Memory positions
within the selected subsection
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