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AnyPort™ Multi-Service Access Processor
The RL56CSMV/6 is a member of the Conexant™ AnyPort™
family of multi-service access processors, and provides a
complete solution to the transport of multiple media types
between circuit-switched remote access and a variety of backend networks (Table 1). AnyPort processors are ideally suited
for the network infrastructures resulting from the convergence
of voice and data networking, addressing new requirements
such as Voice and Fax over packet networks, ISDN and Cellular
Data, while maintaining support of traditional PSTN Data/Fax
needs.
The processor and data pumps use an internal core voltage of
+2.5V, supplied by external pins (VCORE), for low power
consumption.
The RL56CSMV/6 transcends existing modem solutions by
providing a complete system solution for multi-service remote
access. The combined DSP/RISC architecture provides an ideal
engine to run Conexant’s extensive suite of field-proven
modulations, echo cancellers, voice coders, and
communications protocols. In addition, performing functions
such as T.38, V.120, async-to-sync HDLC conversion for PPP,
V.110, and synchronous HDLC for PPP on ISDN connections,
in the access processor allows system designers to reduce
system overhead and increase scalability.
The RL56CSMV/6 is a low-power system providing six
communication channels in a single package. Powerful and
downloadable DSP-based data pumps employ on-chip SRAM
to allow upgrades to future voice and communication
modulation schemes. An advanced RISC microcontroller
manages three dual data pumps simultaneously. An innovative
host interface to the Multi-Service Access Processor system
uses a shared SDRAM memory to increase data throughput
while reducing system cost and space. A programmable time
slot selection feature provides direct digital connection to a
T1/E1/PRI framing device.
A 35mm BGA package houses the RL56CSMV/6 with extra
balls available for thermal vias to minimize heat. A built-in
phase lock loop (PLL) minimizes board noise while easing
design. A quick-wake sleep mode further reduces power
consumption on idle channels.
Features
Generic
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Six access channels in one package
+3.3V/+2.5V operation with +5V tolerant inputs
Downloadable controller firmware and data pump code
Advanced RISC Machines (ARM) architecture
Low-power sleep mode with quick wake
Glueless interface to Conexant Bt8370 T1/E1/PRI framer with time
slot selection
• Built-in phase lock loop (PLL)
Signaling
• DTMF detection and generation
• Multi-frequency tone support for legacy network equipment (R1
and R2)
Data
• Data modem modes
− PSTN: ITU-T V.90, K56flex, K56Plus, V.34 (33.6 kbps), V.FC,
V.32 bis, V.32, V.22 bis, V.22A/B, V.23, and V.21; Bell 212A
and 103
− ISDN: 64/56 kbps ISDN Basic Rate Interface B Channel HDLC
control, or data pass-through mode for HDLC processing
elsewhere in the central site system
• Internal error correction and data compression (ECC)
− V.42 LAPM and MNP 2-4 error correction
− V.42 bis and MNP 5 data compression
− MNP 10EC™ enhanced cellular
• Async/sync HDLC conversion
• V.120 ISDN data
• V.110 cellular data
• LAP-B X.75
Voice
• Baseline configuration:
− G.723.1 and G.723.1 Annex A
− G.711 µ-law and A-law
− G.729 Annex A and Annex B
− G.168 128 ms Network Echo Canceller
• Patented robust jitter buffer
• Voice API using Mailbox Messages
FAX
• Fax modem send and receive rates up to 33600 bps
• V.34, V.17, V.33, V.29, V.27 ter, and V.21 channel 2,
Group 3, T.30 protocol and Class 1, 2 supported
• T.38 real-time fax protocol
Communications software-compatible AT commands
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