KS8995M Micrel, Inc. Pin Description (by Number) Pin Number Pin Name Type(1) 1 TEST1 NC NC for normal operation. Factory test pin. 2 GNDA Gnd Analog ground 3 VDDAR P 4 RXP1 I 1 Physical receive signal + (differential) 5 RXM1 I 1 Physical receive signal -(differential) 6 GNDA Gnd 7 TXM1 O 1 Physical transmit signal -(differential) 8 TXP1 O 1 Physical transmit signal + (differential) 9 VDDAT P 10 RXP2 I 2 Physical receive signal + (differential) 11 RXM2 I 2 Physical receive signal -(differential) 12 GNDA Gnd 13 TXM2 O 2 Physical transmit signal -(differential) 14 TXP2 O 2 Physical transmit signal + (differential) 15 VDDAR P 16 GNDA Gnd 17 ISET 18 VDDAT P 19 RXP3 I 3 Physical receive signal + (differential) 20 RXM3 I 3 Physical receive signal -(differential) 21 GNDA Gnd 22 TXM3 O 3 Physical transmit signal -(differential) 23 TXP3 O 3 Physical transmit signal + (differential) 24 VDDAT P 25 RXP4 I 4 Physical receive signal + (differential) 26 RXM4 I 4 Physical receive signal -(differential) 27 GNDA Gnd 28 TXM4 O 4 Physical transmit signal -(differential) 29 TXP4 O 4 Physical transmit signal + (differential) 30 GNDA Gnd 31 VDDAR P Port Pin Function 1.8V analog VDD Analog ground 2.5V analog VDD Analog ground 1.8V analog VDD Analog ground Set physical transmit output current. Pull-down with a 3.01kΩ 1% resistor. 2.5V analog VDD Analog ground 2.5V analog VDD Analog ground Analog ground 1.8V analog VDD Note: 1. P = Power supply I = Input O = Output I/O = Bi-directional Gnd = Ground Ipu = Input w/ internal pull-up Ipd = Input w/ internal pull-down Ipd/O = Input w/ internal pull-down during reset, output pin otherwise Ipu/O = Input w/ internal pull-up during reset, output pin otherwise PU = Strap pin pull-up PD = Strap pin pull-down Otri = Output tristated NC = No Connect July 2006 9 M9999-070506
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