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參數(shù)資料
| 型號： | MT9075BL |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | E1 Single Chip Transceiver |
| 中文描述： | 素E1單芯片收發(fā)器 |
| 文件頁數(shù)： | 24/78頁 |
| 文件大?。?/td> | 1008K |
| 代理商： | MT9075BL |
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MT9075A
Preliminary Information
4-152
b) Remote Loopback (RM Loop) - RTIP and RRING
to TTIP and TRING respectively at the PCM 30 side.
Bit RLBK = 0 normal; RLBK = 1 activate.
c) ST-BUS Loopback (ST Loop) - DSTi to DSTo at
the system side. Bit SLBK = 0 normal; SLBK = 1
activate.
d) Payload Loopback (PL Loop) - RTIP and RRING
to TTIP and TRING respectively at the system side
with FAS and NFAS operating normally. Bit PLBK = 0
normal; PLBK = 1 activate. The payload loopback is
effectively a physical connection of DSTo to DSTi
within the MT9075A. Channel zero and the DL
originate at the point of loopback.
e) Metallic Loopback (MT Loop) - The external
signals RTIP and RRING are isolated from the
receiver and the analog outputs TTIP and TRING are
internally connected to the receiver analog input. Bit
MLBK = 0 normal; MLBK = 1 activate.
f) Local and Remote Time Slot Loopback. Remote
time slot loopback control bit RTSL = 0 normal; RTSL
= 1 activate, will loop around receive PCM 30 time
slots to the transmit PCM 30 time slots. Local time
slot loopback bit LTSL = 0 normal; LTSL = 1 activate,
will loop around DSTi time slots towards the DSTo
time slots.
Error Counters
The MT9075A has nine error counters, which can be
used for maintenance testing, an ongoing measure
of the quality of a PCM 30 link and to assist the
designer in meeting specifications such as ITU-T
I.431 and G.821. All counters can be preset or
cleared by writing to the appropriate locations. A
separate status page - “1 Second Status” on page
09H - latches the states of the following counters: E-
bit Error Counter, Errored Frame Alignment Signal
Counter, Bipolar Violation Counter and CRC Error
Counter on a one second interval, coincident with
the one second status bit.
Associated with each counter is a maskable event
occurrence interrupt and a maskable counter
overflow interrupt. Overflow interrupts are useful
when cumulative error counts are being recorded.
For example, every time the frame error counter
overflow (FERO) interrupt occurs, 256 frame errors
have been received since the last FERO interrupt. All
counters are cleared and held low by programming
the counter clear bit (master control page 01H,
address 1AH, bit 2) high. Counter overflows set bits
in the counter overflow latch (page 04H, address
16H); this latch is cleared when read.
The overflow reporting latch (page 04H, address
16H) contains a register whose bits are set when
individual counters overflow. These bits stay high
until the register is read.
PRBS Error Counter (PS7-0)
There are two 8 bit counters associated with PRBS
comparison; one for errors and one for time. Any
errors that are detected in the receive PRBS will
increment the PRBS Error Rate Counter of page
04H, address 10H. Writes to this counter will clear an
8 bit counter, PSM7-0 (page 01H, address 11H)
which counts receive CRC-4 multiframes. A
maskable PRBS counter overflow (PRBSO) interrupt
(page 1, address 19H) is associated with this
counter.
MT9075A
Tx
DSTi
DSTo
System
PCM30
MT9075A
Tx
DSTo
System
PCM30
Rx
MT9075A
Tx
DSTi
DSTo
System
PCM30
MT9075A
Tx
DSTi
DSTo
System
PCM30
Rx
MT9075A
Tx
DSTi
DSTo
System
PCM30
Rx
MT9075A
Tx
DSTi
DSTo
System
PCM30
Rx
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT9075BP | E1 Single Chip Transceiver |
| MT9075B-1 | E1 Single Chip Transceiver |
| MT9075 | () |
| MT9076 | T1/E1/J1 3.3V Single Chip Transceiver |
| MT9076AB | T1/E1/J1 3.3V Single Chip Transceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT9075BL1 | 制造商:Microsemi Corporation 功能描述:FRAMER E1 5V 100MQFP - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX SGL E1 W/LIU 100MQFP 制造商:Microsemi Corporation 功能描述:IC TXRX SGL E1 W/LIU 100MQFP |
| MT9075BP | 制造商:Microsemi Corporation 功能描述: |
| MT9075BP1 | 制造商:Microsemi Corporation 功能描述:Single Chip Transceiver 1TX 1RX 2.048Mbps 68-Pin PLCC Tube 制造商:Microsemi Corporation 功能描述:FRAMER E1 5V 68PLCC - Rail/Tube 制造商:Microsemi Corporation 功能描述:PB FREE E1 SINGLE CHIP TRANSCEIVER 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX SGL E1 W/LIU 68PLCC 制造商:Microsemi Corporation 功能描述:IC TXRX SGL E1 W/LIU 68PLCC |
| MT9075BPR | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:E1 Single Chip Transceiver |
| MT9075BPR1 | 制造商:Microsemi Corporation 功能描述:FRAMER E1 5V 68PLCC - Tape and Reel |
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