參數(shù)資料
型號： MT9075B
廠商： Mitel Networks Corporation
英文描述： E1 Single Chip Transceiver(E1單片收發(fā)器)
中文描述： 素E1單芯片收發(fā)器（素E1單片收發(fā)器）
文件頁數(shù)： 27/82頁
文件大?。?/td> 275K
代理商： MT9075B
Preliminary Information
MT9075B
27
Receive
microprocessor port. The Rx message mode dual
port RAMs (on page 11H and 12H) have a unique
address associated with each incoming line channel.
When the processor reads any of the 32 memory
locations, it reads the last byte received from the
corresponding channel.
data
may
also
be
read
by
the
Alarms
The following alarms are detected by the receiver.
Each may generate a maskable interrupt:
Remote Alarm Indication (RAI) - bit 3 (A) of
the receive NFAS;
Alarm Indication Signal (AIS) - unframed all
ones signal for at least a double frame (512
bits) or two double frames (1024 bits);
Channel 16 Alarm Indication Signal - all ones
signal in channel 16;
Auxiliary pattern - 101010... pattern for at
least 512 bits;
Loss of Signal - a loss of signal condition
occurs when the receive signal is detected
with more than 127 consecutive zeros. A
loss of signal condition will terminate when
an average ones density of at least 12.5%
has been received over a period of 127
contiguous pulse positions starting with a
pulse.
Remote Signalling Multiframe Alarm - bit 6
(Y-bit) of the multiframe alignment signal.
T1 - (T1 timer bit on page 03H address 12H)
this status bit (and maskable interrupt) shall
be high when a signal that is not normal has
been received for a minimum of 100 msec.
This bit will be low when a normal signal is
being received.
T2 - (T2 timer bit on page 03H address 12H)
this status bit (and maskable interrupt) shall
be high when a normal signal has been
received for a minimum of 10 msec. This bit
will be low when an abnormal signal is being
received.
The alarm reporting latch (address 1BH page 04H)
contains a register whose bits are set high for
selected alarms. These bits stay high until the
register is read. This allows the controller to record
intermittent or sporadic alarm occurrences.
Automatic Alarms
The transmission of RAI and signalling multiframe
alarms can be made to function automatically from
control bits ARAI and AUTY (page 01H, address
11H) When ARAI = 0 and basic frame
synchronization is lost (page 03H, address 10H, bit
7, SYNC = 1), the MT9075 will automatically transmit
the RAI alarm signal to the far end of the link. The
transmission of this alarm signal will cease when
basic frame alignment is acquired.
When AUTY = 0 and signalling multiframe alignment
is not acquired (page 03H, address 10H, bit 6,
MFSYNC = 1), the MT9075 will automatically
transmit the multiframe alarm (Y-bit) signal to the far
end of the link. This transmission will cease when
signalling multiframe alignment is acquired.
Interrupts
The MT9075B has an extensive suite of maskable
interrupts, which are divided into eight categories
based on the type of event that caused the interrupt.
Each interrupt category has an associated interrupt
vector described in Table 11. When unmasked
interrupts occur, IRQ will go low and one or more bits
of the interrupt vector IV7-IV0 (page 04H, address
12H) will go high. After the interrupt vector is read it
is automatically cleared and IRQ will return to a high
impedance state. The interrupt acknowledgment
function can also be accomplished by toggling the
INTA bit (page 01H, address 1AH).
All the interrupts of the MT9075B are maskable. This
is accomplished through the corresponding interrupt
mask words on page 01H (except for the HDLC
interrupt mask registers which are located on page
0BH and 0CH).
National Use Bit Interrupt Mask Word (address 19H)
Bit 7 Bit 0
Interrupt Mask Word Zero (address 1BH)
Bit 7 Bit 0
Interrupt Mask Word One (address 1CH)
Bit 7 Bit 0
Interrupt Mask Word Two (address 1DH)
Bit 7 Bit 0
Interrupt Mask Word Three (address 1EH)
Bit 7 Bit 0
- - -
PRBSO PRBS
SanibI
SabitI
C8Sa6I
Sa6I
Sa5I
SYNI
RAII
AISI
AISI6I
LOSI
FERI
BPVO
SLPI
EBI
CRCI
CEFI
BPVI
RCR1
RCR0
BERI
SIGI
EBO
CRCO CALNI
FERO
JAI
BERO AUXPI CMFO
MFSYI CSYNI
- - -
YI
1SEC
T1I
T2I
- - -
相關(guān)PDF資料
PDF描述
MT9075 E1 Single Chip Transceiver
MT9075A E1 Single Chip Transceiver
MT9075AL E1 Single Chip Transceiver
MT9075AP E1 Single Chip Transceiver
MT9075BL E1 Single Chip Transceiver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT9075B-1 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:E1 Single Chip Transceiver
MT9075BL 制造商:Microsemi Corporation 功能描述:FRAMER E1 5V 100MQFP - Trays
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
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