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參數(shù)資料
| 型號： | MT9079 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Advanced Controller for E1(先進的E1幀調節(jié)器和控制器) |
| 中文描述： | 高級控制器素E1（先進的素E1幀調節(jié)器和控制器） |
| 文件頁數(shù)： | 42/60頁 |
| 文件大?。?/td> | 347K |
| 代理商： | MT9079 |
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MT9079
4-248
location. The BPV counter is cleared by writing zero
to location 1DH first and then writing zero to location
1CH of page 4.
The interrupt vector byte is then cleared by reading
it. This step ensures that interrupts that occurred
when the interface was not initialized will be cleared
before the MT9079 IRQ output is activated. The IRQ
output function is activated by making SPND low.
TAIS is now made high, which indicates to the far end
of the link that this end is functional.
It should be noted that Figure 12 is an initialization
example and does not imply that there is a rigid
sequence that must be followed.
PCM 30 Trunk and Timing Interface
Figure 13 shows the MT9079 connection to a
generic Line Interface Unit (LIU). The LIU has three
functions: 1) it converts the framed transmit signal to
the required PCM 30 pseudo-ternary signal; 2) it
converts the received PCM 30 pseudo-ternary signal
to a binary signal; and c) it extracts a data clock form
the receive PCM 30 signal.
In order to meet network requirements, it is
necessary to control the transmit equalization of the
LIU (EC1 - EC3). This pre-emphasizes the transmit
pulse shape so it can fit within a standard pulse
template at a specific point on the transmit link.
When using a LIU that clocks data in and out with
separate signals, the MT9079 remote loopback can
allow bit errors to occur. This is because the MT9079
does not re-time the looped signal, so phase
differences in the C2 and RCLK clock signals will
impact the transmit data. This problem can be
prevented by implementing the remote loopback in
the LIU and controlling it from a port. Performing the
remote loopback in the LIU also more closely
adheres to network requirements, which state that a
remote loopback should be implemented as close to
the PCM 30 side of the trunk as possible.
Figure 13 - PCM 30 Line Interface Unit (LIU)
Figure 14 - Common Channel Signalling Control (Time Slot 16) through the MC68302
Voice/Data Bus
DSTi
DSTo
F0i
C4i/C2i
E8ko
E2i
TxA
TxB
RxA
RxB
MT9079
EC3
EC2
EC1
RLOOP
TCLK
to
Control
Port
LIU
RCLK
E1 Transmit
Trunk
Interface
E1 Receive
System Timing
MT8980D
STon
STin
CSTo
DTA
C4i
MT9079
DSTi
DSTo
C4i/C2i
TxA
TxB
RxA
RxB
E2i
To Trunk Interface
MT8980
μ
P Interface
MT9079
μ
P Interface
D
L
L
L
L
L
MC68302
C2
+5V
909
C4
Address
Data
&
Control
100
100
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MT9079AC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS? FAMILY Advanced Controller for E1 |
| MT9079AE | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS? FAMILY Advanced Controller for E1 |
| MT9079AL | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS⑩ FAMILY Advanced Controller for E1 |
| MT9079AP | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS⑩ FAMILY Advanced Controller for E1 |
| MT9079APR | 制造商:Microsemi Corporation 功能描述:FRAMER E1 5V 44PLCC - Tape and Reel |
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