28560-DSH-001-B Datasheet, PDF (26/274 Pages) M/A-COM Technology Solutions, Inc. – HDLC Controller

Introduction
1.3
1-8
CX28560 Data Sheet
Feature Summary
The following is a summary of the features provided by the CX28560:
2047-channel, full-duplex link layer controller for synchronous applications.
32 full-duplex physical interfaces (i.e., ports) with independent clock rates.
The CX28560 implements 32 serial ports that are individually programmable
to operate either as conventional serial ports or TSBUS serial ports. Both
operational modes allow the input/output data stream to be configured as
channelized or unchannelized bit streams. Clock rates may be as high as 52
MHz.
General purpose HDLC (ISO 3309) is supported.
HDLC/SDLC
HSSI
ISDN D-channel (LAPD/Q.921)
X.25 (LAPB)
Frame Relay (LAPF/ANSI T1.618)
Inter-System Link Protocol (ISLP) support
LAPDm support
ATM/SMDS DXI
Transparent unformatted mode
Point-to-Point-Protocol (PPP)
Multi-Link-Point-to-Point-Protocol (MLPPP)
Hyper-channels and sub-channels are supported.
Applications that require hyper-channeling:
– ISDN Primary Rate Interface (PRI)
– ISDN Primary Rate Adapter (PRA)
– Fractional T1 (FT1)
– Fractional E1 (FE1)
– Fractional Nx64K
– SONET/SDH/PDH paths connected via TSBUS:
Mixed VT1.5/VT2 paths
Mixed TU-11/TU-12 paths
Mixed T1/E1 paths
– Multiple lines multiplexed to 1 port:
Digital Subscriber Line Access Multiplexer (DSLAM)
T1/E1 Frame Relay
Sub-channeling mode
– Each channel can be programmed to either use a complete DS-0 time slot or
mask any subset of a time slot. A signal mask is defined per-channel basis
that has an enabled bit per time slot. The mask bit dictates whether the
whole DS-0 or part of it is enabled.
– Applications that require sub-channeling:
ISDN Basic Rate Interface (BRI)
ISDN Basic Rate Adapter (BRA)
Frame Relay 56K and Nx56K
Compressed Voice Transparent Channels (e.g., ADPCM)
Centralized Signaling Channel Controllers:
Link Access Procedure D-Channel (LAPD)
Mindspeed Technologies™
Advance Information
28560-DSH-001-B