S1221

SONET/SDH OC-3/12 Quad 8-bit Transceiver

Benefits

Provides a fully integrated serialization/deserialization device that performs all necessary parallel-to-serial and serial-to-parallel functions in conformance with SONET/SDH transmission standards.

Receive section operates at with a channel selectable operating rate of 155.52 or 622.08 Mbps.

Includes an integrated CDR as well as SONET/SDH framer with alarms.

The four seperate receive channels may be provisioned with any mix of 155.52 or 622.08 Mbps data.

All transmit data must be synchronized to its associated receive channel rate.

Can be configured to operate with and without the use of a microcontroller, Media Independent Interface (MII) and non-MII modes respectively.

Features

• Mixed quad configuration that supports both OC-3 and OC-12 data rates simultaneously
• 8-bit LVCMOS parallel data path
• SONET/SDH framing capability with frame pulse output and OOF/LOF alarms
• Transmit FIFO, maximizing transmit timing
• Lock detect outputs and signal detect inputs with selectable CDR reference frequencies of 19.44, 77.76, or 155.52 MHz
• Embedded diagnostics including BIST and multiple loopback modes: diagnostic/line/parallel/serial clock loop timing
• 1.2V & 3.3V/2.5V power supply requirements with no sequencing required
• I/Os directly compatible with: 2.5V/3.3V LVDS, or 3.3V LVPECL using either an AC or DC coupled interface
• Minimal external components required by featuring internal loop filter components, internally biased outputs, internal common mode bias for AC inputs and internal bias for LVPECL drivers
• Complies with Bellcore and ITU-T specifications for jitter tolerance, jitter transfer, and jitter generation
• Typical 715 mW power in LVDS mode
• 255 ball grid array package with Green/RoHS compliant lead-free option
• S1221 is a drop-in replacement for S1213
• CMOS 0.13 micron technology