Features: • SMPTE-259M-CD compliant along with SMPTE-259M
encoder (CY7C9235) and decoder (CY7C9335)
• Fibre Channel compliant
• DVB-ASI compliant
• RX PLL tolerant of long run length data patterns (>20
bits)
• 8B/10B-coded or 10-bit unencoded
• TTL synchronous I/O
• No external 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
• Single +5V supply
• 28-pin PLCC
• 0.8µ BiCMOSPinout
Specifications(Above which the useful life may be impaired. For user guide-
lines, not tested.)
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 mADescriptionThe CY7B9234 SMPTE HOTLink
® Transmitter and
CY7B9334 SMPTE HOTLink Receiver bolt on to the SMPTE
Scrambler Controller (CY7C9235) and SMPTE
Descrambler/Framer Controller (CY7C9335) completing the
four piece chipset to transfer uncompressed SMPTE-259M
encoded video over high-speed serial links (fiber, coax, and
twisted pair). SMPTE HOTLink CY7B9334 supports SMPTE-259M-CD
standard data rates at 270 and 360 Mbps. Figure 1 illustrates
typical connections to host systems or controllers.
Eight or ten bits of user data or protocol information are loaded
into the SMPTE HOTLink CY7B9334 transmitter and, in DVB mode, are
encoded. Serial data is shifted out of the three differential
positive ECL CY7B9334 (PECL) serial ports at the bit rate (which is 10
times the byte rate).
The SMPTE HOTLink CY7B9334 receiver accepts the serial bit stream at
its differential line receiver inputs and, using a completely
integrated PLL Clock Synchronizer, recovers the timing infor-
mation necessary for data reconstruction. The bit stream is
deserialized, and in DVB mode, 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 of CY7B9334 can be disabled in SMPTE or
DVB 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 Built-In Self-Test pattern generator
and checker allows testing of the transmitter, receiver, and the
connecting link as a part of a system diagnostic check.
SMPTE HOTLink CY7B9334 are ideal for a variety of video appli-
cations including video transmission equipment, video
recorders, video editing equipment, and video routers.