cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 26

• Manufacturer Part Number: cx28560
• Description: Hdlc Controller
• Manufacturer: Mindspeed Technologies

Introduction
1.3
1-8
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.
General purpose HDLC (ISO 3309) is supported.
Hyper-channels and sub-channels are supported.
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.
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)
Applications that require hyper-channeling:
Sub-channeling mode
– 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:
– Multiple lines multiplexed to 1 port:
– Each channel can be programmed to either use a complete DS-0 time slot or
– Applications that require sub-channeling:
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.
Digital Subscriber Line Access Multiplexer (DSLAM)
T1/E1 Frame Relay
Mixed VT1.5/VT2 paths
Mixed TU-11/TU-12 paths
Mixed T1/E1 paths
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:
Mindspeed Technologies™
Link Access Procedure D-Channel (LAPD)
Advance Information
CX28560 Data Sheet
28560-DSH-001-B