HDMP-1512

The HDMP-1512 transmitter and the HDMP-1514 receiver are bipolar integrated circuits, separately packaged, in 80 pin MQuad packages. HDMP-1512 are used to build a high speed Fibre Channel link for point to point data communications. Shown in Figure 1 is a typical full duplex point-topoint Fibre Channel link.

The sending system in HDMP-1512 provides parallel, 8B/10B, encoded data and a transmit byte clock to the HDMP- 1512 transmitter. Using the transmit byte clock, the transmitter converts the data to a serial stream and sends it over a copper cable or fiber-optic link. The receiver converts the serial data stream back to parallel encoded data and presents it, along with the recovered transmit byte clock, to the receiving system. The sending system has the option to electrically wrap the transmitted data back to the local receiver. HDMP-1512  is possible to transmit over the cable driver, or laser driver when data is being wrapped back to the local receiver.

The HDMP-1512 two-chip set (transmitter chip and receiver chip) is compatible with the FC-0 layer of the American National Standards Institute (ANSI), Fibre Channel specification, X3.230-1994. This specification defines four standard rates of operation for Fibre Channel links. The HDMP- 1512 and HDMP-1514 chip-set will operate at the two highest defined serial rates of 531.25 Mbaud and 1062.5 Mbaud. These serial baud rates correspond to 8B/10B encoded byte rates of 50 Mbytes/sec and 100 Mbytes/sec respectively. The proper setting of a single pin on each chip selects the desired rate of operation.

Several features of HDMP-1512, exclusive to this chip-set, make it ideal for use in Fibre Channel links. In addition, the laser driver on the transmitter chip, the dual loss of light detectors on the receiver chip, and the power supervisor and power reset features make this chip-set ideal for use with laser optics. The serial cable driver (transmitter chip), and the cable equalizer (on the receiver chip), can be operated in conjunction with, or as an alternative to, the laser driver. The laser driver can also be driven directly with an external high speed serial input. Altogether, the various features, input/output options, and flexibility of this chip-set make several unique link configurations possible. In particular, it is ideally suited for use in applications where conformance to the FCSI specification # 301-Rev 1.0, Gbaud Link Module Specification, is desired.