PI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Features Description 4 Differential Channel, 2:1 Mux/DeMux Pericom Semiconductors PI2PCIE2412 is an 8 to 4 differential channel multiplexer/demultiplexer switch. This solution can PCI Express, Gen 2 Performance, 5.0Gbps switch 2 full PCI Express, Gen2, lanes to one of two locations. Low Bit-to-Bit Skew , 7ps max (between + and - bits) Using a unique design technique, Pericom has been able to Low Crosstalk: -23dB 3 GHz minimize the impedance of the switch such that the attenuation Low Off Isolation: -23dB 3 GHz observed through the switch is negligible. The unique design V Operating Range: +1.5V to +1.8V 10% DD technique also offers a layout targeted for PCI Express signals, ESD Tolerance: 5kV HBM I/O 2kV HBM select pin which minimizes the channel to channel skew as well as channel Low channel-to-channel skew, 35ps max to channel crosstalk as required by the PCI Express specification. Packaging (Pb-free & Green): 42-contact, TQFN (ZH42) Application Routing of PCI-Express, Gen2, signals with low signal attenuation. Pin Description Block Diagram A0+ B0+ A0- B0- A1+ B1+ 42 41 40 39 A1- B1- GND B0+ 1 38 C0+ A0+ B0- 2 37 C0- A0- 3 36 B1+ C1+ GND B1- 4 35 C1- V 34 C0+ 5 DD A1+ C0- 6 33 B2+ A2+ A1- C1+ 7 32 A2- B2- V 8 31 C1- DD A3+ B3+ SEL V 9 30 DD A3- B3- GND B2+ 10 29 C2+ A2+ 11 28 B2- C2- A2- B3+ 12 27 C3+ V 26 B3- 13 C3- DD GND 14 25 C2+ SEL A3+ C2- 15 24 A3- 16 23 C3+ GND C3- 17 22 Truth Table 18 19 20 21 Function SEL A to B L N N A to C H N N 03/26/2014 www.pericom.com 14-0036 1 V V DD DD GND GND V DD V DD GND GNDPI2PCIE2412 1.8V, PCI Express Gen2 Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch Pin Description Pin Pin Name I/O Description 2 A0+ I/O Signal I/O, Channel 0, Port A 3 A0 6 A1+ I/O Signal I/O, Channel 1, Port A 7 A1 11 A2+ I/O Signal I/O, Channel 2, Port A 12 A2 15 A3+ I/O Signal I/O, Channel 3, Port A 16 A3 38 B0+ I/O Signal I/O, Channel 0, Port B 37 B0 36 B1+ I/O Signal I/O, Channel 1, Port B 35 B1 29 B2+ I/O Signal I/O, Channel 2, Port B 28 B2 27 B3+ I/O Signal I/O, Channel 3, Port B 26 B3 34 C0+ I/O Signal I/O, Channel 0, Port C 33 C0 32 C1+ I/O Signal I/O, Channel 1, Port C 31 C1 25 C2+ I/O Signal I/O, Channel 2, Port C 24 C2 23 C3+ I/O Signal I/O, Channel 3, Port C 22 C3 Operation mode Select 9 SEL I (when SEL=0: AB, when SEL=1: AC 5, 8, 13,18, 20, 30, V Pwr 1.5V to 1.8V (0.1V) Positive Supply Voltage DD 40, 42 1, 4, 10, 14, 17, 19, 21, 39, 41, Center GND Pwr Power ground Pad www.pericom.com 03/26/2014 14-0036 2