HOTLink Transmitter / Receiver Integrated Circuit Chip , electronics ic chips CY7B923- JC

Features

• Fibre-Channel-compliant

• IBM ESCON-compliant

• DVB-ASI-compliant

• ATM-compliant

• 8B/10B-coded or 10-bit unencoded

• Standard HOTLink: 160–330 Mbps

• High-speed HOTLink: 160–400 Mbps for high-speed applications

• Low-speed HOTLink: 150–160 Mbps for low-cost fiber applications

• TTL synchronous I/O

• No external phase locked-loop (PLL) components

• Triple PECL 100K serial outputs

• Dual PECL 100K serial inputs

• Low power: 350 mW (Tx), 650 mW (Rx)

• Compatible with fiber-optic modules, coaxial cable, and twisted pair media

• Built-in Self-Test (BIST)

• Single +5V supply

• 28-pin SOIC/PLCC/LCC

• Pb-Free Packages Available

• 0.8µ BiCMOS

Functional Description

Functional Description The CY7B923 HOTLink‚ Transmitter and CY7B933 HOTLink Receiver are point-to-point communications building blocks that transfer data over high-speed serial links (fiber, coax, and twisted pair). Standard HOTLink data rates range from 160 to 330 Mbits/second. Higher speed HOTLink is also available for high-speed applications (160–400 Mbits/second), as well as, for low-cost applications, HOTLink-155 (150–160 Mbits/second operations). Figure 1 illustrates typical connections to host systems or controllers. Eight bits of user data or protocol information are loaded into the HOTLink transmitter and are encoded. Serial data is shifted out of the three differential positive ECL (PECL) serial ports at the bit rate (which is ten times the byte rate). The HOTLink receiver accepts the serial bit stream at its differential line receiver inputs and, using a completely integrated PLL Clock Synchronizer, recovers the timing information necessary for data reconstruction. The bit stream is deserialized, decoded, and checked for transmission errors. Recovered bytes are presented in parallel to the receiving host along with a byte-rate clock. The 8B/10B encoder/decoder can be disabled in systems that already encode or scramble the transmitted data. I/O signals are available to create a seamless interface with both asynchronous FIFOs (i.e., CY7C42X) and clocked FIFOs (i.e., CY7C44X). A BIST pattern generator and checker allows testing of the transmitter, receiver, and the connecting link as a part of a system diagnostic check. HOTLink devices are ideal for a variety of applications where a parallel interface can be replaced with a high-speed point-to-point serial link. Applications include interconnecting workstations, servers, mass storage, and video transmission equipment.

Maximum Ratings

Storage Temperature......................................−65°C to +150°C

Ambient Temperature with Power Applied.............−55°C to +125°C

Supply Voltage to Ground Potential................. −0.5V to +7.0V

DC Input Voltage ................................................ −0.5V to +7.0V

Output Current into TTL Outputs (LOW)......................30 mA

Output Current into PECL outputs (HIGH)...................−50 mA

Static Discharge Voltage ........................................... >4001V

(per MIL−STD−883, Method 3015)

Latch-Up Current..................................................... >200 mA

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