xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 113
xrt94l33
Manufacturer Part Number
xrt94l33
Description
Multi-channel, Multi-function Device Aggregates 3 Ds3/e3/sts-1 Into Oc3/stm-1
Manufacturer
Exar Corporation
Datasheet
1.XRT94L33.pdf
(465 pages)
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3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
1.0 XRT94L33 ARCHITECTURE
The XRT94L33 can be configured to operate in any of the following modes for ATM and PPP Applications
• The 1-Channel STS-3c and up to 2 Channel DS3/E3 ATM UNI/PPP Mode
• The 1-Channel STS-3 (e.g., 3 Channel of ATM UNI/PPP over STS-1, which is in-turn mapped into STS-3
Mode
• The 1-Channel STS-3/STM-1 (e.g., 3 Channels of ATM/PPP over DS3/E3, which is turn mapped into STS-
3 Mode.
The basic functional architecture of the XRT94L33, when it is configured to operate in either of these modes
will be presented below.
1.1
If the XRT94L33 has been configured to operate in the “1 Channel STS-3c ATM UNI/PPP” Mode, then it will
have the “Functional Architecture” as is presented below in Figure 1.
Figure 1: The Functional Block Diagram of the XRT94L33 when it has been configured to operate in
the 1-Channel STS-3c ATM UNI/PPP Mode
FUNCTIONAL ARCHITECTURE OF THE XRT94L33 – 1 CHANNEL STS-3C ATM UNI/PPP MODE
XRT94L33 – Channel 0
Interface
Telecom
Interface
Interface
Telecom
Interface
STS-3
PECL
STS-3
Block
Block
STS-3
PECL
STS-3
STS-3
Block
Block
Block
Bus
CDR
STS-3
Block
Bus
CDR
Processor
Transmit
Processor
Processor
Transmit
STS-3
Processor
Block
Receive
TOH
STS-3
STS-3
Microprocessor
Block
Receive
Block
TOH
TOH
STS-3
Microprocessor
Block
TOH
Interface
Interface
Block
Block
Processor
Processor
Transmit
Processor
Processor
Transmit
Receive
STS-3c
STS-3c
Block
Receive
Block
STS-3c
STS-3c
POH
POH
Block
Block
Synthesizer
POH
POH
113
Synthesizer
Clock
Block
Clock
Block
Cell Processor
Cell Processor
Cell Processor
Cell Processor
Processor
Processor
Transmit
Processor
Processor
Transmit
Transmit
Receive
Receive
Transmit
Block
Receive
Block
Receive
Block
ATM
PPP
PPP
Block
ATM
Block
Block
Block
ATM
PPP
PPP
Block
ATM
POS-PHY
POS-PHY
UTOPIA/
Transmit
Transmit
UTOPIA
Interface
Interface
Interface
Interface
POS-PHY
POS-PHY
UTOPIA/
Transmit
Transmit
Receive
Receive
UTOPIA
Interface
Interface
Interface
Interface
Block
Block
Receive
Block
Receive
Block
Block
Block
Block
Block
XRT94L33
Rev.1.2.0.
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