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CX28398 Arkusz danych(PDF) 4 Page - Synaptics Incorporated. |
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CX28398 Arkusz danych(HTML) 4 Page - Synaptics Incorporated. |
4 / 305 page 100054E Conexant Detailed Feature Summary Frame Alignment • Framed formats: – Independent transmit and receive framing modes – T1: FT/SF/ESF/SLC/T1DM/TTC-JT(J1) – E1: FAS/MFAS/FAS+CAS/MFAS+CAS • Maximum Average Reframe Time (MART) less than 50 ms • Transmitter alignment modes: – Align to system bus data – Align to system bus sync – Align to buffer data (embedded framing) • Unframed mode Signaling • T1: 2-, 4-, or 16-state robbed bit ABCD signaling • E1: Channel Associated Signaling (CAS) • Common Channel Signaling (CCS) in any time slot • Per-channel receive signaling stack • Signaling state change interrupt • Automatic and manual signaling freeze • Debounce signaling (2-bit integration) • UNICODE detection • Signaling reinsertion on PCM system bus • Separate I/O for system bus signaling • Per-channel transparent Loopbacks • Remote loopback toward line – Retains BPV transparency (CX28394 and CX28398 only) • Payload loopback • Per-channel DS0 remote loopback • Local loopback towards system – Framer digital loopback – Per-channel DS0 local loopback • Inband loopback code detection/ generation • Simultaneous local and remote line loopbacks Processor Interface • Parallel 8-bit bus • Data strobes (Motorola) or address latch enable (Intel) • Multiplexed or non-multiplexed address/data bus • Synchronous or asynchronous data transfers • Open drain interrupt output with maskable sources Out-of-Service Testing and Maintenance • Pseudo-Random Bit Sequence (PRBS): – Independent transmit and receive –211; 215; 220; 223 patterns – Framed or unframed mode – Optional 7/14 zero limit – Bit Error Counter (BERR) • Single error insertion: – PRBS error – Framing error – CRC error – BPV/LCV error (CX28394 and CX28398 only) – COFA error System Bus Interface (SBI) • System bus data rates: – 1536 kbps (T1 without F-bits) – 1544 kbps (T1) – 2048 kbps (E1) – 4096 kbps (2E1) – 8192 kbps (4E1) • Clock operation at 1x or 2x data rate • Selectable I/O clock edges • Master, slave, or mixed bus timing • Bit and time slot frame sync offsets • DS0 drop/insert indicators for external mux • Embedded T1 framing transport per G.802 • Receive and transmit slip buffers – Bypass, 2-frame, or 64-bit depth – Slip detection with directional status – Slip buffer phase status – Per-channel idle code insertion – Processor accessible data buffers • Direct connection to upper layer devices: – Link layer: Bt8474 – ATM layer: CN8228 • Direct connection to physical line interface – CX28380 • Supported system bus formats: – ATT Concentration Highway Interface (CHI) – Multi-Vendor Integration Protocol (MVIP) –Mitel ST-bus • Separate or internally multiplexed bus modes In-Service Performance Monitoring • One-second timer I/O to synchronize reporting • Receive error detectors with accumulators: – Bipolar/Line Code Violations (LCV) (CX28394 and CX28398 only) – Excessive Zeros (EXZ) – Loss of Frame (RLOF) – Framing Errors (FERR) – CRC Errors (CERR) – Far End Block Errors (FEBE) – Severely Errored Frames (SEF) – Change of Frame Alignment (COFA) • Transmit error detectors: – Loss of Frame (TLOF) – Framing Errors (TFERR) – Multiframe Errors (TMERR) – CRC Errors (TCERR) – Loss of Transmit Clock (TLOC) • Receive alarm detectors: – Alarm Indication Signal (AIS) – Loss of Signal (RLOS) – RAI/Yellow Alarm (YEL) – Multiframe Yellow (MYEL) – Lost Frame Alignment (FRED) – Lost Multiframe Alignment (MRED) – Carrier Failure Alarm (CFA) with 8:1 dual slope integration • Controlled Frame Slip (RFSLIP) Uncontrolled Frame Slip (RUSLIP) • Automatic and on-demand transmit alarms: – AIS following RLOS and/or TLOC – Automatic AIS clock switching – YEL following FRED – YEL following 100ms reframe timeout – MYEL following MRED – FEBE following CERR |
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