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參數(shù)資料
| 型號(hào)： | MT90840 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Distributed Hyperchannel Switch(分布式超級(jí)通道開關(guān)) |
| 中文描述： | 分布式Hyperchannel開關(guān)（分布式超級(jí)通道開關(guān)） |
| 文件頁數(shù)： | 5/50頁 |
| 文件大?。?/td> | 315K |
| 代理商： | MT90840 |
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Preliminary Information
MT90840
2-235
59
10
TRST
Test Reset
(
Input
). Asynchronously initializes the JTAG TAP controller, placing it
in the Test-Logic-Reset state. This pin is pulled high internally when not driven.
This pin should be pulsed low on power-up, or held low continuously, to ensure
that the MT90840 is in the normal functional state, and not the test state.
60
11
TCK
Test Clock
(
Input
). Provides the clock to the JTAG test logic. This pin is pulled high
by an internal pull-up when not driven.
61
12
TMS
Test Mode Select
(
Input
). JTAG signal that controls the state transitions of the
TAP controller, sampled on rising TCK. This pin is pulled high by an internal
pull-up when not driven.
62
13
TDO
Test Data
(
Output
). JTAG serial data is output on this pin on the falling edge of
TCK. This pin is held in a high impedance state when JTAG scan is not enabled.
65
16
SPCKo
Serial Port Clock (Output)
In TM2 and TM3, this is a 4.096 MHz clock output
derived from the system 4.096 MHz reference. (As controlled by the C4/8R bit and
the INTCLK bit in the TIM Register.) This output is used to shift data in and out of
the serial port.
In TM1 and TM4, this output is automatically placed in high impedance.
For applications with the serial port running at 8.192 Mbps this output is not used,
and an 8.192 MHz clock source must be supplied at C4/8R1 or C4/8R2.
66-73
17-24
STo7-STo0
Serial Output Streams 7 to 0 (Bidirectional)
. Serial TDM data-streams at 2.048,
4.096 or 8.192 Mbps, with 32, 64 or 128 channels respectively per stream. For
2.048 and 4.096 Mbps applications, streams STo0-STo7 can be used, while for
8.192 Mbps, only streams STo0-STo3 are used (512 channel limit). These eight
bidirectional lines can be programmed as inputs or outputs (default) on a
per-channel basis.
76-83
32-39
AD0-AD7
Multiplexed Address/Data Bus (Bidirectional
). These I/O lines provide an 8-bit
interface to a microprocessor for control and monitoring of the MT90840. These
pins function as eight input address lines to the Address Latch circuit as well as
eight data I/O lines.
84
40
R/W \ WR
Read/Write \ Write (Input)
. In Motorola multiplexed-bus mode this input is
R/W, which controls the direction of the data bus lines (AD0-AD7) during a
microprocessor access. In Intel/National multiplexed-bus mode this input is WR,
an active low signal which configures the data bus lines (AD0-AD7) as inputs
during a microprocessor write access.
1,11
24,32,
43,53,
64,74
15,25,
41,55,
68,74,
90,10
0
V
SS
Ground
.
2, 12,
25,33
44,54,
63,75
5, 14,
26,42
56,69,
75,91
V
DD
+5 Volt Power Supply.
Pin Description (continued)
Pin #
Name
Description
84
100
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT90840AK | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Distributed Hyperchannel Switch |
| MT90840AL | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 512 X 2430/512 X 512/2.373K X 2.373K 5V 100MQFP - Trays |
| MT90840AL1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 512 X 2430/512 X 512/2.373K X 2.373K 5V 100MQFP - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DGTL SWITCH DHS 100MQFP 制造商:Microsemi Corporation 功能描述:IC DGTL SWITCH DHS 100MQFP |
| MT90840AP | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 512 X 2430/512 X 512/2.373K X 2.373K 5V 84PLCC - Rail/Tube |
| MT90840AP1 | 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 512 X 2430/512 X 512/2.373K X 2.373K 5V 84PLCC - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DGTL SWITCH DHS 84PLCC 制造商:Microsemi Corporation 功能描述:IC DGTL SWITCH DHS 84PLCC |
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