Fibre Channel Transmitter and
Receiver Chipset
Technical Data
HDMP-1512 Transmitter
HDMP-1514 Receiver
Features
• ANSI X3.230-1994 Fibre
Channel Standard
Compatible (FC-0)
• Selectable 531.25 Mbaud or
1062.5 Mbaud Data Rates
• Selectable On Chip Laser
Driver and 50 Ω Cable
Driver
• TTL Compatible I/Os
• Single +5.0 V Power Supply
Applications
• Mass Storage System I/O
Channel
• Work Station/Server I/O
Channel
• High Speed Peripheral
Interface
Description
The HDMP-1512 transmitter and
the HDMP-1514 receiver are
bipolar integrated circuits,
separately packaged, in 80 pin MQuad packages. They 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 provides parallel,
8B/10B, encoded data and a
transmit byte clock to the HDMP1512 transmitter. Using the transmit byte clock, the transmitter
656
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. It is possible to transmit
over the cable driver, or laser
driver when data is being
wrapped back to the local
receiver.
The 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 HDMP1512 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, 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.
5964-6637E (4/96)
