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PD518 Datasheet(PDF) 3 Page - Texas Instruments |
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PD518 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 20 page  www.ti.com PCA9518 EXPANDABLE FIVE-CHANNEL I2C HUB SCPS132A – JUNE 2006 – REVISED JULY 2007 TERMINAL FUNCTIONS SOIC, SSOP, TSSOP, OR NAME DESCRIPTION QSOP PIN NO. 1 EXPSCL1 Expandable serial clock pin 1. Connect to VCC through a pullup resistor. 2 EXPSCL2 Expandable serial clock pin 2. Connect to VCC through a pullup resistor. 3 SCL0 Serial clock bus 0. Connect to VCC through a pullup resistor. 4 SDA0 Serial data bus 0. Connect to VCC through a pullup resistor. 5 SCL1 Serial clock bus 1. Connect to VCC through a pullup resistor. 6 SDA1 Serial data bus 1. Connect to VCC through a pullup resistor. 7 EN1 Active-high bus enable 1 8 SCL2 Serial clock bus 2. Connect to VCC through a pullup resistor. 9 SDA2 Serial data bus 2. Connect to VCC through a pullup resistor. 10 GND Ground 11 EN2 Active-high bus enable 2 12 SCL3 Serial clock bus 3. Connect to VCC through a pullup resistor. 13 SDA3 Serial data bus 3. Connect to VCC through a pullup resistor. 14 EN3 Active-high bus enable 3 15 SCL4 Serial clock bus 4. Connect to VCC through a pullup resistor. 16 SDA4 Serial data bus 4. Connect to VCC through a pullup resistor. 17 EN4 Active-high bus enable 4 18 EXPSDA1 Expandable serial data pin 1. Connect to VCC through a pullup resistor. 19 EXPSDA2 Expandable serial data pin 2. Connect to VCC through a pullup resistor. 20 VCC Supply voltage FUNCTION TABLE(1)(2)(3) INPUTS FUNCTION EN1 EN2 EN3 EN4 SCL1 SCL2 SCL3 SCL4 SDA1 SDA2 SDA3 SDA4 L L L L Disconnect Disconnect Disconnect Disconnect Disconnect Disconnect Disconnect Disconnect L L L H Disconnect Disconnect Disconnect SCL0 Disconnect Disconnect Disconnect SDA0 L L H L Disconnect Disconnect SCL0 Disconnect Disconnect Disconnect SDA0 Disconnect L L H H Disconnect Disconnect SCL0 SCL0 Disconnect Disconnect SDA0 SDA0 L H L L Disconnect SCL0 Disconnect Disconnect Disconnect SDA0 Disconnect Disconnect L H L H Disconnect SCL0 Disconnect SCL0 Disconnect SDA0 Disconnect SDA0 L H H L Disconnect SCL0 SCL0 Disconnect Disconnect SDA0 SDA0 Disconnect L H H H Disconnect SCL0 SCL0 SCL0 Disconnect SDA0 SDA0 SDA0 H L L L SCL0 Disconnect Disconnect Disconnect SDA0 Disconnect Disconnect Disconnect H L L H SCL0 Disconnect Disconnect SCL0 SDA0 Disconnect Disconnect SDA0 H L H L SCL0 Disconnect SCL0 Disconnect SDA0 Disconnect SDA0 Disconnect H L H H SCL0 Disconnect SCL0 SCL0 SDA0 Disconnect SDA0 SDA0 H H L L SCL0 SCL0 Disconnect Disconnect SDA0 SDA0 Disconnect Disconnect H H L H SCL0 SCL0 Disconnect SCL0 SDA0 SDA0 Disconnect SDA0 H H H L SCL0 SCL0 SCL0 Disconnect SDA0 SDA0 SDA0 Disconnect H H H H SCL0 SCL0 SCL0 SCL0 SDA0 SDA0 SDA0 SDA0 (1) SCL from master = SCL0 (2) SDA from master = SDA0 (3) See Description and Application Information for information on EXPxxx1 and EXPxxx2 behavior. 3 Submit Documentation Feedback |
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