ADVANCED INFORMATION ADVANCED INFORMATION CY7C955 CY7C955 SO
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This abbreviated version this data sheet. complete version, please contact your Cypress Marketing Representative.
ADVANCED INFORMATION ADVANCED INFORMATION
CY7C955 CY7C955
SONET/SDH Transceiver
Loss Signal Frame, Loss Frame Line Receive Failure Line Alarm Indication Signal Parity Error Loss Cell Alignment Loss Receive Data
Features
Aphysical layer
SONET frame processing including Compliant with, Bellcore GR-253, TI.105 I.432, G.709 Frame generation/recovery SONET scrambling/descrambling Frequency justification/pointer processing
device
Provides complete physical layer transport Acells rate 155.52MHz STS-1 rate 51.84MHz
Compliant with AForum User Network Interface specification UTOPIA Ainterface Acell processing including generation/verification Cell scrambling/descrambling Rate adaption/idle cell filtering Local Flow Control Cell alignment
Complete line interface Clock data recovery Transmit timing derived from receiver byte-rate source external components SONET compliant 100K compatible
Controller interface internal interrupt configuration registers Error monitoring Status indication Device configuration
Alarm indications including
0.65
power CMOS
PQFP
TDAT[7:0] TXPRTY TSOC TFCLK TWRENB
Transmit UTOPIA Transmit FIFO Cell D[7:0] A[7:0] INTB RSTB VCLK RALM
Transmit ACell Processor
Transmit Path Overhead Processor
Transmit Line Overhead Processor
Transmit Section Overhead Processor
TBYP RATE0 RATE1
TCLK TFPO
TGFC XOFF
Controller Interface
Configuration Status Register File Error Monitoring
Transmit Clock Multiplier Transmit Buffer
TXD+/- TXC+/- TRCLK+/-
Rate Selection SONET/SDH Clock Recovery
Receive UTOPIA Receive FIFO Cell TSEN RDAT[7:0] RXPRTY RSOC RFCLK RRDENB
Receive ACell Processor
Receive Path Overhead Processor
Receive Line Overhead Processor
Receive Section Overhead Processor
ALOS+/- RRCLK+/- RXD+/- RXDO+/-
RGFC
RCLK
RBYP
7C955-1
Document 38-00417
Cypress Semiconductor Corporation
3901 North First Street
Jose
95134 408-943-2600 January 1994 Revised: April 1996
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