VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7124 Quad Port Bypass Circuit Features • ANSI X3T11 Fibre Channel Compliant at 1.0625Gb/s • 3.3V, 0.25W Typical Power • IEEE 802.3z Gigabit Ethernet Compliant at 1.25Gb/s • 0.35um CMOS, a Velocity Family Member • Five Port Bypass Circuits (PBCs) • 44-Pin, 10mm PQFP Package • On-Chip Transmit Termination General Description The VSC7124 contains five cascaded Port Bypass Circuits (PBCs) used to steer serial signals. This part is typically used in distributing Fibre Channel signals to an array of disk drives in an FC-AL loop as illustrated in Figure 1. The VSC7124 can be used with any of the Vitesse JBOD circuits to implement FC-AL JBODs of virtually any size. In Figure 1, the first VSC7127’s CRU is configured as a Repeater to attenuate jitter. The VSC7124 does not contain a CRU in order to reduce power and cost. The second VSC7127’s CRU is configured as a retimer so that the output of the device is a jitter compliance point. Each PBC is a multiplexer that is controlled by the corresponding SELx line which, if HIGH, selects the external input or, if LOW, selects the output of the previous PBC. 1 1 0 PBC1 G52293-0, Rev 2.3 05/07/01 1 0 PBC2 1 1 0 PBC3 O0+ O0I0+ I0SEL0 O4+ O4I4+ I4SEL4 O3+ O3I3+ I3SEL3 O2+ O2I2+ I2SEL2 O1+ O1I1+ I1SEL1 VSC7124 Block Diagram 0 0 PBC4 PBC0 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 1 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7124 Quad Port Bypass Circuit Application Example A 12-port JBOD is shown in Figure 1. This dual loop application uses one VSC7127R, one VSC7127T and one VSC7124 on each loop in order to configure the FC-AL disk array. Functional drives are included in the FCAL loop while nonfunctional or missing drives (numbers 2, 7, 9) are excluded. Figure 1: 12-Drive FC-AL JBOD Application Retimer 1 LOOP A VSC7127T #5 & 6: Retimer Mode SEL1=1, SEL5=1 MODE=1 0 1 0 1 0 1 0 4 VSC7127T #6 VSC7127T #5 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 3 2 0 0 1 0 1 0 1 0 1 4 3 VSC7124 #4 VSC7124 #3 & 4: No CRU 0 0 7125 SerDes 7125 SerDes 1 2 7125 SerDes 7125 SerDes 7125 SerDes 7125 SerDes 3 7125 SerDes 7125 SerDes 7125 SerDes 7125 SerDes 5 4 1 VSC7124 #3 CONFIGURATION: VSC7127R #1 & 2: Repeater Mode SEL0=1, SEL5=1 MODE=0 Retimer VSC7121 QUAD PORT BYPASS CIRCUIT Optics or Copper 6 7 2 1 7125 SerDes 7125 SerDes 8 0 LOOP B 0 1 0 1 0 1 0 1 Repeater 9 4 3 2 VSC7127R #2 Optics or Copper VSC7127R #1 0 1 7125 SerDes 7125 SerDes 7125 SerDes 7125 SerDes 7125 SerDes 7125 SerDes 10 11 12 Repeater 0 Page 2 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52293-0, Rev 2.3 5/7/01 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7124 Quad Port Bypass Circuit Figure 2: Timing Waveforms Ix+/- Ox+/T1 AC Characteristics Parameters T1 (Over Recommended Operating Conditions) Description Min Typ Max Units Conditions T1 Propagation Delay 7.0 ns Delay with all circuits bypassed. TR, TF Serial Data Rise and Fall Time 300 ps At ∆VIN minimum levels Tj(PBC) Data Jitter Accummulation 120 ps Peak-to-Peak on Ox+/- DC Characteristics (Over Recommended Operating Conditions) Parameters Description VOH Output HIGH voltage (TTL) VOL Output LOW voltage (TTL) Min Typ Max Units V IOH = -1.0 mA 0.5 V IOL = +1.0 mA 2.4 VIH Input HIGH voltage (TTL) 2.0 5.5 V VIL Input LOW voltage (TTL) 0 0.8 V IIH Input HIGH current (TTL) IIL Input LOW current (TTL) ∆VOUT75(1) TX output differential peak-to-peak voltage swing ∆VOUT50(1) Conditions 500 µA VIN =2.4V -500 µA VIN =0.5V 1200 2200 mVp-p 75Ω to VDD – 2.0 V TX output differential peak-to-peak voltage swing 1000 2200 mVp-p 50Ω to VDD – 2.0 V ∆VIN(1) Receiver differential peak-to-peak Input Sensitivity RX 400 2600 mVp-p Internally biased to VDD/2 VDD Supply voltage 3.14 3.47 V 50 3.3V±5% PD Power dissipation 250 555 mW Outputs open, VDD = VDD max ±2% IDD Power Supply Current 76 160 mA Outputs open, VDD = VDD max NOTE: (1) Refer to Application Note AN-37 for details regarding differential voltage measurements. G52293-0, Rev 2.3 05/07/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 3 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information Quad Port Bypass Circuit VSC7124 Absolute Maximum Ratings (1) TTL Power Supply Voltage (VDD)...................................................................................................... 0.5V to +4V PECL DC Input Voltage (VINP) ............................................................................................. -0.5V to VDD +0.5V TTL DC Input Voltage, (VINT).......................................................................................................... -0.5V to 5.5V DC Voltage Applied to Outputs for High Output State (VIN TTL) ........................................ -0.5V to VDD + 0.5V TTL Output Current (IOUT), (DC, Output High)........................................................................................... 50mA PECL Output Current (IOUT), (DC, Output High) ....................................................................................... -50mA Case Temperature Under Bias, (TC)............................................................................................. -55°C to +125°C Storage Temperature (TSTG)........................................................................................................ -65°C to + 150°C Recommended Operating Conditions(2) Power Supply Voltage (VDD) . ......................................................................................................+3.14V to 3.47V Ambient Operating Temperature Range (T)....................................................................... 0°C to +85°C Ambient NOTES: (1) CAUTION: Stresses listed under “Absolute Maximum Ratings” may be applied to devices one at a time without causing permanent damage. Functionality at or above the values listed is not implied. Exposure to these values for extended periods may affect device reliability. (2) Vitesse guarantees the functional and parametric operation of the part under “Recommended Operating Conditions” except where specifically noted in the AC and DC Parametric tables. Page 4 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52293-0, Rev 2.3 5/7/01 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7124 Quad Port Bypass Circuit Package Pin Descriptions 43 VSS 41 39 37 I3- I3+ VDDP3 O3- O3+ VSS I2- I2+ VDDP2 O2- O2+ Figure 3: Pin Diagram 35 1 33 3 31 VSS VDD VDD I1- O4+ O4- I1+ 29 5 VDDP1 O1- I4+ VSC7124 O1+ VDDP4 7 27 9 25 11 23 I4VDDP0 VSS I0- O0O0+ N/C N/C 21 N/C 19 VDD SEL4 SEL3 17 SEL2 15 SEL0 N/C N/C 13 SEL1 VSS VSS I0+ Table 1: Pin Identifications Pin # Name 4, 3, 41, 40 35, 34, 28, 27 10, 9 I1+, I1-, I2+, I2I3+, I3-, I4+, I4I0+, I 0- 15, 16, 17, 18 14 SEL1, SEL2 SEL3, SEL4 SEL0 7, 6, 44, 43 38, 37, 31, 30 24, 25 O1+, O1-, O2+, O2O3+, O3-, O4+, O4O0+, O0- 2, 21, 32 VDD 5 42 36 29 26 VDDP1 VDDP2 VDDP3 VDDP4 VDDP0 Description INPUT - Differential, Internally Biased to VDD/2 Ix+/Ix- is the serial input to PBCx. INPUT - TTL Port Bypass Mux SELect lines. A HIGH selects Ix. A LOW selects the output of the previous internal device. OUTPUT - Differential Ox+/Ox- is the serial output from PBCx. Digital Logic Power Supply. Power Supply (3.3V) for O1+/-. Power Supply (3.3V) for O2+/-. Power Supply (3.3V) for O3+/-. Power Supply (3.3V) for O4+/-. Power Supply (3.3V) for O0+/-. 12, 13, 20, 22, 23 N/C Not Connected 1, 8, 11, 19, 33, 39 VSS Ground G52293-0, Rev 2.3 05/07/01 If unused, connect to VSS. If unused, connect to VSS. If unused, connect to VSS. If unused, connect to VSS. If unused, connect to VSS © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 5 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7124 Quad Port Bypass Circuit Package Information 44-Pin PQFP 10 x 10 mm F G 44 Item mm Tol. A 2.45 MAX D 2.00 +0.10 E 0.35 +.05 F 13.20 +.25 G 10.00 +.10 H 13.20 +.25 34 1 33 I H I 10.00 +.10 J 0.88 +.15 / -.10 K 0.80 BASIC 23 11 12 22 12o TYP D 12o TYP K 0.30 RAD. TYP. A 0.25 MAX. 0.20 RAD. TYP. 0.17 MAX. 0.25 NOTES: Drawing not to scale. Cavity up All units in mm unless otherwise noted. Page 6 0o- 8o 0.102 MAX. LEAD COPLANARITY J1 E J © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52293-0, Rev 2.3 5/7/01 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7124 Quad Port Bypass Circuit Package Thermal Characteristics The VSC7124 is packaged in a standard plastic quad flatpack, PQFP. This package adheres to industry-standard EIAJ footprints for a 10mm body, 44-pin PQFP. The package construction is shown in Figure 4. The 44pin PQFP with embedded slug has the thermal properties listed in Table 2. Figure 4: Package Cross Section Plastic Molding Compound Lead Bond Wire Die Table 2: 44 PQFP Thermal Resistance Symbol θCA-0 Description Thermal resistance from case-to-ambient, still air Value Units 50 o C/W C/W θCA-100 Thermal resistance from case-to-ambient, 100 LFPM air 43 o θCA-200 Thermal resistance from case-to-ambient, 200 LFPM air 39 o C/W C/W C/W θCA-400 Thermal resistance from case-to-ambient, 400 LFPM air 36 o θCA-600 Thermal resistance from case-to-ambient, 600 LFPM air 34 o The VSC7124 is designed to operate with an ambient temperature up to +70oC. Moisture Sensitivity Level This device is rated at a Moisture Sensitivity Level 3 rating with maximum floor life of 168 hours at 30ºC, 60% relative humidity. Please refer to Application Note AN-20 for appropriate handling procedures. G52293-0, Rev 2.3 05/07/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 7 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7124 Quad Port Bypass Circuit Ordering Information The order number for this product is formed by a combination of the device number and package type. VSC7124 XX Device Type Quad Port Bypass Circuit Package QM: 44-Pin PQFP, 10mm x 10mm Marking Information The package is marked with three lines of text as shown in Figure 5. Figure 5: Package Marking Information Pin 1 Identifier VITESSE Part Number DateCode VSC7124QM ####AAAAA Package Suffix Lot Tracking Code (4 or 5 characters) Notice Vitesse Semiconductor Corporation (“Vitesse”) provides this document for informational purposes only. This document contains pre-production information about Vitesse products in their concept, development and/or testing phase. All information in this document, including descriptions of features, functions, performance, technical specifications and availability, is subject to change without notice at any time. Nothing contained in this document shall be construed as extending any warranty or promise, express or implied, that any Vitesse product will be available as described or will be suitable for or will accomplish any particular task. Vitesse products are not intended for use in life support appliances, devices or systems. Use of a Vitesse product in such applications without written consent is prohibited. Page 8 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52293-0, Rev 2.3 5/7/01