CY7B9234-270JC Cypress Semiconductor Corp, CY7B9234-270JC Datasheet - Page 14

• Manufacturer Part Number: CY7B9234-270JC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7B9234-270JC

• Lead Free Status / Rohs Status: Not Compliant

Document #: 38-02014 Rev. *A
Encoded Mode Operation
In Encoded mode the input data is interpreted as eight bits of
data (D
diagnostic input bit (SVS). If the context of the data is to be
normal message data, the SC/D input should be LOW, and the
data should be encoded using the valid data character set
described in the Valid Data Characters section of this
datasheet. If the context of the data is to be control or protocol
information, the SC/D input will be HIGH, and the data will be
encoded using the valid special character set described in the
Valid Special Character Codes and Sequences section.
Special characters include all protocol characters necessary
to encode packets for Fibre Channel, ESCON, DVB-ASI
proprietary systems, and diagnostic purposes.
The diagnostic characters and sequences available as Special
Characters include those for Fibre Channel link testing, as well
as codes to be used for testing system response to link errors
and timing. A Violation symbol can be explicitly sent as part of
0
−D
7
), a context control bit (SC/D), and a system
ENA
CKR
SMPTE HOTLink TRANSMITTER
ASYNCHRONOUS FIFO
ASYNCHRONOUS FIFO
CKW
SMPTE HOTLink RECEIVER
RDY
7C42X/3X/6X/7X
7C42X/3X/6X/7X
W
7B9234
7B9334
RP
R
Q
D
Figure 5. Seamless FIFO Interface
0 − 7
0 − 7
Q
D
0 − 8
0 − 8
,SC/D
,SC/D
9
9
a user data packet (i.e., send C0.7; D
SC/D = 1), or it can be sent in response to an external system
using the SVS input. This will allow system diagnostic logic to
evaluate the errors in an unambiguous manner, and will not
require any modification to the transmission interface to force
transmission errors for testing purposes.
Bypass Mode Operation
In Bypass mode the input data is interpreted as ten (10) bits
(D
data to be serialized and sent over the link. This data can use
any encoding method suitable to the designer. The only
restrictions upon the data encoding method is that it contain
suitable transition density for the Receiver PLL data synchro-
nizer (one per 10 bit byte on average), and that it be
compatible with the transmission media. Occasional long run
length data patterns > 20 bits are acceptable.
b-h
), SC/D (Da), and SVS (Dj) of pre-encoded transmission
ENR
ENN
CKR
CKW
SMPTE HOTLink TRANSMITTER
SMPTE HOTLink RECEIVER
CKW
CKR
CLOCKED FIFO
CLOCKED FIFO
RDY
ENW
7C44X/5X
7C44X/5X
7B9234
7B9334
Q
D
0 − 7
0 − 7
Q
D
0 − 8
0 − 8
,SC/D
,SC/D
7−0
9
9
CY7B9234
CY7B9334
= 111 00000 and
Page 14 of 32
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