MT90733 Mitel Networks Corporation, MT90733 Datasheet

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MT90733

Manufacturer Part Number
MT90733
Description
CMOS DS3 Framer (DS3F)
Manufacturer
Mitel Networks Corporation
Datasheet
Features
Applications
U.S. Patent Number 5040170
DS3 payload access in either bit-serial or
nibble-parallel mode
C-bit parity or M13 operating mode
Separate interface for C-bits
Detect and generate DS3 AIS, and idle signals
Transmit reference generator for serial
operation
Transmit and receive FEAC channel under
software control
Transmit single errors: framing, FEBE, C-bit
parity, and P-bit parity
FEBE, C-bit and P-bit performance counters
Transmit-to-Receive and Receive-to-Transmit
loopbacks
Subrate multiplexing
Wideband data or video transport
DS3 monitor and test
Channel extenders
FORCFEBE
FORCEOE
FORCECP
FORCEPP
CRDCC
CXDCC
AD(7-0)
STUFC
STUFD
CRCK
OENA
CXCK
D3RD
D3RC
D3TD
D3TC
CRD
CXD
CRF
CXF
ALE
SEL
WR
RD
FE
X1
X2
Line Side
Receive
P I/O
DS3
Send
DS3
Figure 1 - Functional Block Diagram
Interpreter
DS3
Description
The MT90733 DS3 Framer (DS3F) is designed for
mapping broadband payloads into the DS3 frame for-
mat, which meets ANSI’s T1.107-1988 and supple-
ment T1.107a-1990.
Although the C-bit parity format is recommended, the
DS3F can also operate in the M13 mode. In the C-bit
parity format, the DS3F provides a separate interface
for selected C-bits. The DS3F also provides software
access for transmitting and receiving the FEAC chan-
nel, and generates and detects DS3 AIS, DS3 idle, P-
bit parity and C-bit parity. In addition, performance
counters are provided, as well as the ability to gener-
ate single framing, FEBE, C-bit parity and P-bit parity
errors. The payload interface is selectable through
software as either a bit-serial or nibble-parallel format.
Receive
Transmit
MT90733AP
Reference
Generator
Transmit
Frame
Terminal Side
Ordering Information
Output
Input
-40° to 85°C
68 Pin PLCC
ISSUE 1
Advance Information
CMOS
DS3 Framer (DS3F)
Serial Parallel
N.C.
N.C.
XCK
XFSI
XDS
N.C.
N.C.
N.C.
N.C.
N.C.
RDS
RCS
RCG
RFS
N.C.
TDOUT
TCG
TFOUT
TCOUT
TFIN
TCIN
MT90733
XFNO
XCN
XCK
N.C.
XNIB3
XNIB2
XNIB1
RNIB3
RNIB2
RNIB1
RNIB0
RCN
N.C.
RFN
XNIB0
May 1995
5-23

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MT90733 Summary of contents

Page 1

... FORCEPP FORCFEBE U.S. Patent Number 5040170 MT90733AP Description The MT90733 DS3 Framer (DS3F) is designed for mapping broadband payloads into the DS3 frame for- mat, which meets ANSI’s T1.107-1988 and supple- ment T1.107a-1990. Although the C-bit parity format is recommended, the DS3F can also operate in the M13 mode. In the C-bit parity format, the DS3F provides a separate interface for selected C-bits ...

Page 2

... MT90733 CMOS 10 ALE STUFD STUFC 16 17 VDD 18 AD7 AD6 19 AD5 20 AD4 21 VSS 22 AD3 23 24 AD2 AD1 25 26 AD0 Pin Description Power Supply & Ground Pin # Name I/O/P 4, 17, 27 VDD P 38, 51 22, 33 VSS P 44, 53, 67 Note Input Output Power ...

Page 3

... Transmit Clock. A 44.736 Mbit/s clock input with a stability of 20 ppm and a duty cycle of 50 10%. XCK provides the time base for the transmitter in the DS3F. Transmit Clock for Nibble Interface. Output clock signal derived from the transmit clock (XCK). MT90733 CMOS 5-25 ...

Page 4

... MT90733 CMOS Transmit Reference Generator Interfac Pin # Name I/O/P 45 TDOUT O 46 TCG O 47 TFOUT O 48 TCOUT O 52 TCIN I Note Input Output Power Receive C-Bit Interface Pin # Name I/O/P 30 CRDCC O 35 CRF O 36 CRCK O 37 CRD O Note Input Output Power Transmit C-Bit Interface Pin # ...

Page 5

... Write. An active low input signal generated by the processor for writing to the registers which reside in the memory map. Address/Data Bus. These leads constitute the time multiplexed address and data bus for accessing the registers which reside in the DS3F memory map. MT90733 CMOS 5-27 ...

Page 6

... MT90733. The C-bits may be inserted internally, written generated by the external C-bit interface. Figure 4 shows a video application where the MT90733 is used for the reception of TV signals and commands transmission. techniques allow the TV signal to be transmitted and received in DS3 bandwidth. The bandwidth required for the command channel in the other direction is very low ...

Page 7

... Advance Information Rx Line Side LIU Tx Figure 3. Wideband Data Transport Using MT90733 Rx Line Side LIU Tx MT90733 Terminal Video Signal Terminal MT90733 Commands Figure 4. Video Application Using MT90733 MT90733 CMOS Wideband Data Sink / Source TV TV Codec 5-29 ...

Page 8

... MT90733 CMOS NOTES: 5-30 Advance Information ...

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