• LVDS Interfaces
▋Four-channel CDR provides SDH/SONET LVDS 155/622Mbit/s serial interface per channel
▋Power down option of CDR per channel basis or/and whole CDR module.
▋77.76M differential LVDS reference clock input
▋Complies with ITU-T, Bellcore, and ANSI specification for jitter tolerance.
▋Complies with ITU-T, Bellcore, and ANSI specification for jitter transfer and generation if a jitter-free reference clock is applied.
▋8:1 data multiplexing/demultiplexing (MUX/deMUX) for 77.76/19.44 MHz byte-wide data processing by CDR block.
▋Frame boundary detection on the incoming data stream based on a subset of A1A2 bytes (the last two A1 bytes and the first two A2 bytes)
▋Detects loss of signal (LOS), out of frame (OOF), and loss of frame (LOF) conditions in the incoming data stream
▋Automatically insert line AIS into down stream if LOS or LOF alarm is declared.
▋Inserts A1/A2 framing pattern
▋Optionally de-scrambles the received data stream
▋Optionally scrambles the transmit data stream
▋Calculates the BIP-8 (B1) parity for current frame and compares against received B1 of the next frame.
▋A 8-bit counter accumulates B1 errors based on “word” event
▋Calculates B1 and inserts to the transmit data stream
▋Interprets the received AU-4/STS-1 payload pointer (H1/H2) and extracts the payload
▋Detects loss of pointer (AU-LOP) and path alarm indications signal (AU-AIS)
▋Automatically inserts AU-AIS when AU-LOP or AU-AIS are detected
▋Optionally inserts AU-AIS
▋Provides 108-byte FIFO per channel for both frame alignment and compensating interlink and clock phase skew
▋Frame alignment is optionally disabled.
• Telecom Bus Interfaces
▋Four-channel Telecom Bus interfaces provides SDH/SONET byte-wide 19.44/77.76 MHz interfaces per channel
▋Supports master or slave timing mode
▋Optionally inserts fixed AU4/AU3 pointer H1/H2
▋Optionally inserts H4 byte
▋Provides 108-byte FIFO per channel for both frame alignment and compensating interlink and clock phase skew
▋Frame alignment is optionally disabled.
▋Optionally performs multi-frame detection
Framer Controller
▋Provides two independent reference frame pulses for frame alignment and cross connection. The reference frame pulse for each channel is independently selectable.
• Cross Connect
▋Provides high order cross connection at STS-1/AU3 granularity.
▋Provides two independent timing planes. The timing plane for each switch element is • independently selectable.
▋Supports RS/MS overhead (TOH) cross connect independently
▋Supports uni-cast and multi-cast
▋Supports cross connect bypass
• General
▋Provides 8-bit Intel/Motorola microprocessor interface
▋Provides LVDS and Telecom Bus interface loop-back
▋1.8V/3.3V power supply
▋Supports IEEE 1149.1 boundary scan
▋Operating industrial temperature range -40℃ ~85℃
▋Maximum power consumption less then 800 mW
▋FPBGA 272 package