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參數(shù)資料
| 型號(hào)： | MT9079 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Advanced Controller for E1(先進(jìn)的E1幀調(diào)節(jié)器和控制器) |
| 中文描述： | 高級(jí)控制器素E1（先進(jìn)的素E1幀調(diào)節(jié)器和控制器） |
| 文件頁數(shù)： | 41/60頁 |
| 文件大?。?/td> | 347K |
| 代理商： | MT9079 |
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MT9079
4-247
The TE control bit sets the state of the transmit
E-bits when the receive side has lost CRC-4
synchronization. In this case if the interface is the
Terminal Equipment (TE) side, then the E-bits must
be zero. If the interface is the Network Termination
(NT) side, the transmit E-bits must be one when
CRC-4 synchronization is lost. When CRC-4
synchronization is achieved the transmit E-bits will
function according to ITU-T G.704.
The MT9079 has a suite of 30 maskable interrupts.
At this point in the initialization procedure the SYNI,
RAII, AISI, AIS16I, LOSI, FERI, BPVO and SLPI
interrupts will be unmasked and all others will be
masked. If the application does not require
interrupts, the SPND control bit should be kept at
one.
Adjusting the ST-BUS offset will move the bit
positions of the ST-BUS output streams with respect
to the input frame pulse F0i. This can be used to
compensate for large delays in very long backplane
applications. It can also be used to minimize the
delay through the receive elastic buffer.
Selection of the PCM 30 encoding will be determined
by the line interface arrangement used. The default
is HDB3 encoding on bipolar non-return to zero
signals, which will interface directly to most Line
Interface Units (LIU).
After a power-on reset the state of the error counters
of page 4 will be undetermined. Therefore, each of
the counters appropriate to the application should be
cleared by writing a zero value to the counter
Figure 12 - MT9079 Initialization Procedure
START
TAIS input = low
Power-on Reset - RESET
input = RC > = 5 x power
supply rise time
Write 00H to all control
registers of pages 7 & 8
SPND bit = 1
Select mode of operation.
Note 1.
Select National bit, data
link, and AIS mode of
operation.
Note 1.
8KSEL bit = 1 if using the
E8Ko output for loop
(slave) timing.
Note 1.
A
A
Interface
Terminal
Equipment
NO
Mask and unmask
interrupts.
Note 1.
Select ST-BUS offset.
Note 1.
Select PCM 30 line
encoding.
Note 1.
Clear the error counters
of page 4.
Note 2.
Read interrupt vector
register, page 4.
Note 3.
SPND = 0.
Note 3.
TAIS input = high
STOP
YES
TE bit = 1
Notes:
1. Skip if default option is required.
2. Skip if counters are not used.
3. Skip if interrupts are not used.
Is
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相關(guān)代理商/技術(shù)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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