cy7b951 Cypress Semiconductor Corporation., cy7b951 Datasheet
cy7b951
Available stocks
Related parts for cy7b951
cy7b951 Summary of contents
Page 1
... NRZ or NRZI serial data stream and to provide differential data buffering for the Transmit side of the system. Pin Configuration Figure 1. SONET/SDH and ATM Interface • 198 Champion Court • San Jose CY7B951 , CA 95134-1709 • 408-943-2600 Revised October 26, 2006 [+] Feedback ...
Page 2
... Transmit PLL is powered down. All PECL outputs can be powered down by connecting both outputs leaving them both unconnected. CC Document Number: 38-02010 Rev. *A and RIN– leaving them both unconnected left unconnected, the entire Receive PLL will be powered down. CC and TSER− CY7B951 . . Page [+] Feedback ...
Page 3
... Test mode. CC Transmit Functions The transmit section of the CY7B951 contains a PLL that takes a REFCLK input and multiplies (REFCLK⋅8) to produce a PECL (Pseudo ECL) differential output clock (TCLK±). The transmitter has two operating ranges that are selectable with the three-level MODE pin as explained above ...
Page 4
... This feature can be used for aggressive power management. Applications The CY7B951 can be used in Local Area Network ATM appli- cations. The operating frequency of the CY7B951 is centered around the SONET/SDH STS-1 rate of 51.84 MHz and the SONET/SDH STS-3/STM-1 rate of 155.52 MHz. This device can also be used in data mover and Local Area Network (LAN) applications that operate at these frequencies ...
Page 5
... Figure 2. CY7B951 to PMC-Sierra PM5345 SUNI Connection Diagram Maximum Ratings (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 .................................................− ...
Page 6
... CC 0.6 V – 0. – 0.5 CC 0.0 Test Conditions T = 25° MHz 5. CCS CCR CCE + CCS CCT CCE + CCS CCR CY7B951 Max. Unit 1200 mV 1200 – 1.475 – 0. – 0.83 V ...
Page 7
... The ECL switching threshold is the differential zero crossing (i.e., the place where + and – signals cross). Document Number: 38-02010 Rev. *A (b) ECL AC Test Load (d) ECL Input Test Waveform Description MODE = LOW MODE = HIGH MODE = LOW MODE = HIGH [6] MODE = LOW MODE = HIGH [6] [6] [9] [10] CY7B951 [7] Min. Max. Unit 6.41 6.55 MHz 19.24 19.64 MHz 19.5 19.1 ns 6.50 6.40 ...
Page 8
... Switching Waveforms for the CY7B951 SONET/SDH Serial Transceiver Ordering Information Speed Ordering Code (ns) 25 CY7B951-SC 25 CY7B951-SXC 25 CY7B951-SI 25 CY7B951-SXI Document Number: 38-02010 Rev. *A Package Package Type Name S24.3 24-Lead (300-Mil) Molded SOIC SZ24.3 24-Lead (300-Mil) Pb-Free Molded SOIC S24.3 24-Lead (300-Mil) Molded SOIC SZ24 ...
Page 9
... MOLD PROTRUSION/END FLASH SHALL NOT EXCEED 0.010 in (0.254 mm) PER SIDE MIN. 3. DIMENSIONS IN INCHES MAX. 4. PACKAGE WEIGHT 0.65gms * 0.394[10.007] 0.419[10.642] SEATING PLANE 0.092[2.336] 0.105[2.667] 0.004[0.101] * CY7B951 PART # S24.3 STANDARD PKG. SZ24.3 LEAD FREE PKG. * 0.0091[0.231] 0.015[0.381] 0.0125[0.317] 0.050[1.270] 51-85025-*C Page [+] Feedback ...
Page 10
... Document History Page Document Title: CY7B951 Local Area Network ATM Transceiver Document Number: 38-02010 Orig. of REV. ECN. Issue Date Change ** 105848 03/26/01 SZV *A 560754 See ECN PCX Document Number: 38-02010 Rev. *A Description of Change Changed from Spec number: 38-00358 to 38-02010 Added Pb-Free part numbers to ordering information ...