CY7B9234

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 BiCMOS


Pinout

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 mA


Description

The       CY7B9234        SMPTE HOTLink^®   Transmitter    and
CY7B9334  SMPTE HOTLink Receiver bolt   on   to the SMPTE
Scrambler    Controller CY7B9234     (CY7C9235)      and          SMPTE
Descrambler/Framer Controller (CY7C9335) completing the
four piece chipset to transfer uncompressed SMPTE-259M CY7B9234
encoded video over high-speed serial links (fiber, coax, and
twisted pair). SMPTE HOTLink 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 CY7B9234 transmitter and, in DVB mode, are
encoded. Serial data is shifted out of the three differential
positive ECL (PECL) serial ports at the bit rate (which is 10
times the byte rate).
The SMPTE HOTLink receiver accepts the serial bit stream at
its differential line receiver inputs and, using a completely
integrated PLL Clock Synchronizer CY7B9234, recovers the timing infor-
mation necessary for data reconstruction. The bit stream is
deserialized, and in DVB CY7B9234 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 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 CY7B9234 as a part of a system diagnostic check.
SMPTE HOTLink devices are ideal for a variety of video appli-
cations including video transmission equipment, video
recorders, video editing equipment, and video routers.