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Pericom PI2EQX6811ZDE, Application Note

The Pericom PI2EQX6811ZDE is a high-performance signal conditioner for PCI Express applications. Enhance your understanding and maximize its potential with the detailed "Application Note" available for "free download" as a user "manual". Access it on our website and unlock the full capabilities of this outstanding product.

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Pericom Semiconductor Corp., 3545 N. First Street, San Jose, California, USA      408-435-0800      

www.pericom.com

    

 

Page 6 

            

 

Figure6. I2C address Pins Jumper and Interface location 

 

For PI2EQX6811ZDE’s I2C interface, it is compliant with 3.3V power. Figure7 is read/write waveform sample at the 
register value below for the reference. 

 

  

 

Figure7. I2C Write/Read Waveform Sample 

NOTE that there is one dummy byte in Write Sequence.

 

For detail I2C register description, please refer to 

Page7-10

 in datasheet. 

 
 
 
 
 
 
 

I2C Write Sequence

I2C Read Sequence 

DUMMY BYTE 

C0 

Summary of Contents for PI2EQX6811ZDE

Page 1: ... designed to allow convenient testing of its operation and features This board can work with readily available SATA and eSATA cables for easy connection to SATA3 0 HDD SSD OMD storage components and PC system hosts This board allows the PI2EQX6811ZDE device to be powered in 1 5V directly from external power or 5V with a mini USB connector provided to convert This User Guide describes the setup con...

Page 2: ...0 re driver to provide indication when the load is connected to HOST or Device Figure3 shows the logical block diagram of PI2EQX6811ZDE Two channels of the PI2EQX6811ZDE are fully independent in operation and configuration by I2C function Channel configuration of output pre emphasis output swing and input equalization must be set appropriately to match the attached cable trace length and type Figu...

Page 3: ..._MiniB_SMT VBUS 1 D 2 D 3 ID 4 GND 5 U2 CJ1117 1 5V ADJ GND 1 VOUT 2 VIN 3 5V R1 0_0402 R2 NP_0402 JP11 1 2 JP18 1 2 3 JP19 1 2 3 VDD C1 0 1u_0402 C2 0 1u_0402 C3 0 1u_0402 C4 0 1u_0402 EC1 22u_3528 Figure4 Power supply of PI2EQX6811ZDE z Device Configuration The PI2EQX6811ZDE ReDriver supports Pre emphasis swing adjustment and input equalization for optimum operation and signal margins PI2EQX6811...

Page 4: ... Value same as P9 P10 I2C_EN 900 I2C Enable High pin control Low I2C control Output Swing control for Channel A B Tri level control P20 SW 667 VDD JP24 533 GND Output Swing for Channel A B mV Vtx_diff_pp at 3Gb s Open I2C Control Function PIN NAME PIN Control FUNCTION P7 EN P8 A0 B_EQ Input Equalization for Channel B Tri level control With Internal 100k ohm pull up resistor High Normal Operation L...

Page 5: ... setting values Output Swing Setting Output Swing setting has P20 SW tri level configuration by JP24 Table1 shows its selectable setting values Auto slumber Mode Enable Setting Auto slumber mode enable setting has P18 APD_EN configuration by JP26 When JP26 is connected to GND auto slumber mode will be enabled but it is connected to VDD auto slumber mode will be disabled 2 I2C Configuration On PI2E...

Page 6: ...or PI2EQX6811ZDE s I2C interface it is compliant with 3 3V power Figure7 is read write waveform sample at the register value below for the reference Figure7 I2C Write Read Waveform Sample NOTE that there is one dummy byte in Write Sequence For detail I2C register description please refer to Page7 10 in datasheet I2C Write Sequence I2C Read Sequence DUMMY BYTE C0 ...

Page 7: ... diagrams below show some example system test setups with the PI2EQX6811ZDE Eval Board Figure9 shows the connection using a NB PC and eSATA Express Card Note that many notebooks PCs already offer an eSATA port which can be used as the test signal source without the add in card Figure9 eHDD connection Test Setup using NB eSATA Express Card with PI2EQX6811ZDE Eval Board PI2EQX6811ZDE EVB To Device o...

Page 8: ...al Board When connected to the system and powered by USB as shown above then all devices will power up together If the host PC and or HDD are powered on while the Eval Board is off there will be no damage to the PI2EQX6811ZDE under typical conditions If the Eval Board is then powered on the system will generally detect the SATA HDD as a hot plug event and the HDD will begin to operate properly Not...

Page 9: ... CON_SATA_SMT 1 1 2 2 3 3 4 4 5 5 6 6 7 7 C6 0 1u_0402 R29 10k_0402 R30 10k_0402 3 3V SCL_AEM J2 4p 2 54mm Connector 1 2 3 4 SDA_AEQ JP20 1 2 3 R6 0_0402 R4 NP 0_0402 R7 0_0402 U3 PI2EQX6811ZDE TQFN20 AI 1 AI 2 NC 3 BO 4 BO 5 VDD 6 EN 7 A0 B_EQ 8 A1 B_EM 9 I2C_EN 10 BI 11 BI 12 NC 13 AO 14 AO 15 VDD 16 SDATA A_EQ 17 APD_EN 18 SCLK A_EM 19 SW 20 HGND 21 R5 NP 0_0402 C11 10n_0402 C12 10n_0402 R8 0_0...

Page 10: ... B PCB 1 D1 LED 0805 1 JP12 JP13 SATA L type connector L type 2 J2 4p 2 54mm Connector 2 54mm 1 J1 miniUSB connector B type 1 JP11 2PIN HEADER 2 54mm 1 JP18 JP19 JP20 JP21 JP22 JP23 JP24 JP25 JP26 JP27 3PIN HEADER 2 54mm 10 C11 C12 C15 C16 Ceramic Capacitor 10nF 0402 4 C1 C2 C3 C4 C6 C7 C8 Ceramic Capacitor 0 1uF 0402 7 EC1 EC4 EC5 Tan cap 22u 3528 3 R3 Chip Resistor 510ohm 0402 1 R29 R30 Chip Res...

Page 11: ...Pericom Semiconductor Corp 3545 N First Street San Jose California USA 408 435 0800 www pericom com Page 11 History Version 1 0 Original Version Nov 16 2011 ...

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