MT9075B Mitel Networks Corporation, MT9075B Datasheet - Page 39

• Manufacturer Part Number: MT9075B
• Description: E1 Single Chip Transceiver
• Manufacturer: Mitel Networks Corporation

Preliminary Information
7-4
2-0
Bit
3
(0000)
Name
CTXP
TX2-0
Table 26: Transmit Pulse Control Word
(0)
(0)
---
Unused. Set low for normal operation.
Custom Transmit Pulse Level. A
zero means that the transmit pulse
level is determined by the bits TX2-0
listed in the table entry below. When
CPL is a one, the pulse level is
determined
programmed in registers 1CH - 1Fh on
Page 2.
Transmit pulse amplitude. Select the
TX2-TX0 bits according to the line
type, value of termination resistors
(R
TX2 TX1 TX0 Line( ) R
0
0
0
0
1
1
1
1
T
), and transformer turns ratio used
0
0
1
1
0
0
1
1
Functional Description
0
1
0
1
0
1
1
1
120
120
120
120/75 12.1
75/120 12.1
75
75
75
by
15
0
0
0
0
9.1
T
coefficients
( ) Xfmr
1:2
1:1
1:2
1:2
1:2
1:1
1:2
1:2
Bit
7
6
5
4
3
2
1
0
Table 28 - Error and Debounce Selection Word
DBNCE
CRCE
PERR
Name
BPVE
NFSE
LOSE
FASE
(0)
(0)
(0)
(0)
(0)
(0)
(0)
---
(Page 02H, Address 10H)
Bipolar Violation Error Insertion.
A zero-to-one transition of this bit
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 transition 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 30 data.
A one, zero or one-to-zero transition
has no function.
Non-frame
Error
transition of this bit inserts a single
error into bit two of the time slot zero
non-frame alignment signal 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 MT9075B transmits an all
zeros signal (no pulses) in every
PCM 30 time slot. If zero, data is
transmitted normally.
Payload Error Insertion. A zero-to-
one transition of this bit inserts a
single error in the transmit payload.
A one, zero or one-to-zero transition
has no function.
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 signalling
equipment is not synchronous with
the PCM 30 signalling multiframe.
Functional Description
Insertion.
Alignment
MT9075B
A
zero-to-one
Signal
39