Functional Description

The CYP15G0402DX Quad HOTLinkII™ SERDES is a point-to-point communications building block allowing the transfer of pre-encoded data over high-speed serial links (optical fiber, balanced, and unbalanced copper transmission lines) at speeds ranging from 200 to 1500 MBaud per serial link.

Each transmit channel accepts pre-encoded 10-bit transmission characters in an input register, serializes each character, and drives it out a PECL-compatible differential line driver. Each receive channel accepts a serial data stream at a differential line receiver, deserializes the stream into 10-bit characters, frames these characters to the proper 10-bit character boundaries, and this data becomes register outputs with a recovered character clock. Figure 1 illustrates typical connections between independent systems and a CYP15G0402DX.

As a second-generation HOTLink device, the CYP15G0402DX extends the HOTLink family to faster data rates, while maintaining serial link compatibility with other HOTLink devices.

Features

• Second generation HOTLink® technology

• Fibre-Channel and Gigabit-Ethernet-compliant

• 10-bit unencoded data transport

— Aggregate throughput of 12 GB/s

• Selectable parity check/generate

• Four independently controlled 10-bit channels

• Selectable input clocking options

• User selectable framing character

— +Comma, ±comma, or full K28.5 detect

— Single or multicharacter framer for character alignment

— Low-latency option

• Synchronous parallel input interface

— User-configurable threshold level

— Compatible with LVTTL, LVCMOS, LVTTL

• Synchronous parallel output interface

— Compatible with LVTTL, LVCMOS, LVTTL

• 200-to-1500 MBaud serial signaling rate

• Internal PLLs with no external PLL components

— Separate clock and data-recovery PLL per channel

— Common transmit clock multiplier PLL

• Differential PECL-compatible serial inputs

• Differential PECL-compatible serial outputs

— Source matched for 50Ω transmission lines

— No external resistors required

— Adjustable amplitude for 100Ω or 150Ω balanced loads

• Compatible with fiber-optic modules and copper cables

• JTAG boundary scan

• Built-in self-test (BIST) for at-speed link testing

• Per-channel Link Quality Indicator

— Analog signal detect

— Digital signal detect

• Low-power 3W typical

• 256-ball BGA

• 0.25µ BiCMOS technology