MT9079 Mitel Semiconductor, MT9079 Datasheet - Page 31

• Manufacturer Part Number: MT9079
• Description: CMOS ST-BUS FAMILY Advanced Controller for E1
• Manufacturer: Mitel Semiconductor

Bit
7
6
5
4
3
2
1
0
Table 39 - Interrupt Mask Word Three
Name
MFSYI
CSYNI
1SECI
RFALI
STOP
STRT
DATA
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
YI
(Page 1, Address 1EH)
Multiframe
rupt. When unmasked an interrupt is
initiated when multiframe synchroni-
zation is lost. 1 - unmasked, 0 -
masked.
10000000.
CRC-4 Multiframe Alignment. When
unmasked an interrupt is initiated
when CRC-4 multiframe synchroni-
zation is lost. 1 - unmasked, 0 -
masked.
10000000.
Remote
unmasked an interrupt is initiated
when the near end detects a failure
of the remote end CRC-4 process
based on the receive E-bit error
count. See the RFAIL status bit
description of page 3, address 19H. 1
- unmasked, 0 - masked. Interrupt
vector = 10000000.
Remote Multiframe Loss Interrupt.
When unmasked an interrupt is initi-
ated when a remote multiframe alarm
signal is received. 1 - unmasked, 0 -
masked.
10000000.
One
unmasked an interrupt is initiated
when the 1SEC status bit c hanges
state. 1 - unmasked, 0 - masked.
Interrupt vector = 00001000.
Stop Interrupt. When unmasked an
interrupt is initiated when either
STOP0, STOP1, STOP0 or STOP1 is
high and a match or a mismatch
between the received data, and the
data in the code detect word (CDW)
and detect word mask (DWM). 1 -
unmasked, 0 - masked. Interrupt vec-
tor = 00000010.
Start Interrupt. When unmasked an
interrupt is initiated when either
START0,
START1 is high and a match or a
mismatch is made between the
received data, and the data in the
code detect word (CDW) and detect
word mask (DWM). 1 - unmasked, 0 -
masked.
00000010.
Data Interrupt. When unmasked an
interrupt is initiated when the data
received in selected time slots (per
time slot control words) matches the
data in the code detect word (CDW).
1 - unmasked, 0 - masked. Interrupt
vector = 00000010.
Functional Description
Second
Failure
START1,
Interrupt
Interrupt
Interrupt
Interrupt
Synchronization
Interrupt.
Status.
START0
vector
vector
vector
vector
When
When
Inter-
or
=
=
=
=
Control Page 2
Tables 40 to 50 describe the bit functions of the page
2 control registers. ( ) in the “Name” column of these
tables indicates the state of the control bit after a
RESET or RST function.
2 - 1
7 - 0
Bit
Table 40 - Error and Debounce Selection Word
Bit
7
6
5
4
3
0
Table 41 - Bit Error Rate Compare Word
DBNCE
Name
CRCE
BPVE
FASE
NFSE
LOSE
Name
CMP7
CMP0
(00H)
(0)
(0)
(0)
(0)
(0)
(0)
---
-
(Page 2, Address 10H)
(Page 2, Address 11H)
Bipolar Violation Error Insertion. A
zero-to-one transition of this inserts a
single bipolar violation error into the
transmit PCM 30 data. A one, zero or
one-to-zero transition has no function.
CRC-4 Error Insertion. A zero-to-one
transition of this bit inserts a single
CRC-4 error into the transmit PCM 30
data. A one, zero or one-to-zero transi-
tion has no function.
Frame Alignment Signal Error Insertion.
A zero-to-one transition of this bit inserts
a single error into the time slot zero
frame alignment signal of the transmit
PCM
one-to-zero transition has no function.
Non-frame Alignment Signal Error Inser-
tion. A zero-to-one transition of this bit
inserts a single error into bit two of the
time slot zero non-frame alignment sig-
nal of the transmit PCM 30 data. A one,
zero or one-to-zero transition has no
function.
Loss of Signal Error Insertion. If one, the
MT9079 transmits an all zeros signal
(no pulses) in every PCM 30 time slot.
When
violations are transmitted. If zero, data is
transmitted normally.
Unused.
Debounce Select. This bit selects the
debounce period (1 for 14 msec.; 0 for
no debounce). Note: there may be as
much as 2 msec. added to this duration
because the state change of the signal-
ling equipment is not synchronous with
the PCM 30 signalling multiframe.
Bit Error Rate Compare Word 7 to 0.
CMP7 is the most significant bit and
CMP0 is the least significant bit of a bit
pattern that is compared with the data of
the selected receive circular buffer one.
When individual bit mismatches are
detected the Bit Error Rate Counter
(BERC) is incremented.
Functional Description
Functional Description
HDB3
30
data.
encoding is activated no
A
one,
MT9079
zero
4-267
or