PI3PCIE2215 3.3V, PCI Express 1-lane, 2:1 Mux/DeMux Switch Features Description 2 Differential Channel, 2:1 Mux/DeMux Pericom Semiconductors PI3PCIE2215 is a 4 to 2 differential chan- nel multiplexer/demultiplexer switch. The PI3PCIE family of switch PCI Express 2.0 Performance, 5.0Gbps solutions is fully compliant with PCIe signals at 5.0Gbps. Due to Pinout optimized for placement between two PCIe slots its low bit-to-bit skew, high channel-to-channel noise isolation and Bi-directional operation high bandwidth, this product is ideal for PCI Express switching. Low Bit-to-Bit Skew, 5ps max Low Crosstalk: -26dB 5 GHz Application Low Off Isolation: -20dB 5 GHz V Operating Range: +3.3V Switch a PCI Express lane output between two PCI Express lane DD inputs ESD Tolerance: 2kV HBM Packaging (Pb-free & Green): 28 contact TQFN (ZH) Block Diagram Pin Description (Top-side view) AI+ AOa+ AI- AOa- BI+ BOa+ 28 27 26 25 AI+ BI- 1 GND 24 BOa- AI- AOa+ 2 23 AOb+ AOb+ 3 AOa- 22 AOb- AOb- 4 GND 21 BOb+ BI+ 5 V 20 DD GND BOb- 6 BI- 19 BOa+ 7 SEL BOb+ 18 BOa- 8 BOb- 17 V DD 9 V 16 DD SEL 10 15 NC GND Truth Table 11 12 13 14 Function SEL xIy to xOay L xIy to xOby H 09-0033 PS9069 08/03/09 1 GND GND V V DD DD GND GND V V DD DDPI3PCIE2215 3.3V, PCI Express, 1-Lane, 2:1 Mux/DeMux Switch Signal Descriptions Pin Number Pin Name Type Description 1 AI+ Differential input Differential input pair from PCIE signal source. Signal is 2 AI- passed through to the AOa+, AOa- pin respectively when SEL=0. Signal is passed through to the AOb+, AOb- pin respectively when SEL = 1. 23 AOa+ Differential pass-through Differential analog pass-through output. Signal from AI+ 22 AOa- input and AI- is passed through AOa+ and AOa- respectively when SEL=0. 3 AOb+ Differential pass-through Differential analog pass-through output. Signal from AI+ 4 AOb- input and AI- is passed through AOa+ and AOa- respectively when SEL=1. 5 BI+ Differential input Differential input pair from PCIE signal source. Signal is 6 BI- passed through to the BOa+, BOa- pin respectively when SEL=0. Signal is passed through to the BOb+, BOb- pin respectively when SEL = 1. 19 BOa+ Differential pass-through Differential analog pass-through output. Signal from BI+ 18 BOa- input and BI- is passed through BOa+ and BOa- respectively when SEL=0. 7 BOb+ Differential pass-through Differential analog pass-through output. Signal from BI+ 8 BOb- input and BI- is passed through BOb+ and BOb- respectively when SEL=1. 11, 13, 15, 21, 24, GND Ground input Ground 26, 28, (center pad) 10 NC - No Connect - Reserved, do not connect 16 SEL 3.6V tolerant low-voltage SEL controls the mux through a ow-through latch. single-ended input 9, 12, 14, 17, 20, V Power supply Power, 3.3V 10% DD 25, 27 09-0033 PS9069 08/03/09 2