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AM79C989JC Datasheet(PDF) 10 Page - Advanced Micro Devices |
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AM79C989JC Datasheet(HTML) 10 Page - Advanced Micro Devices |
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10 / 37 page  10 Am79C989 PRELIMINARY PIN DESCRIPTIONS 10BASE-T Signal Pins TXD0 ± 10BASE-T Transmit Data Port 0 Output TXD0 ± are the 10BASE-T differential data drivers for port 0. RXD0 ± 10BASE-T Receive Data Port 0 Input RXD0 ± are the 10BASE-T differential data receivers for port 0. TXD1 ± 10BASE-T Transmit Data Port 1 Output TXD1 ± are the 10BASE-T differential data drivers for port 1. RXD ± 10BASE-T Receive Data Port 1 Input RXD1 ± are the 10BASE-T differential data receivers for port 1. TXD2 ± 10BASE-T Transmit Data Port 2 Output TXD2 ± are the 10BASE-T differential data drivers for port 2. RXD2 ± 10BASE-T Receive Data Port 2 Input RXD2 ± are the 10BASE-T differential data receivers for port 2. TXD3 ± 10BASE-T Transmit Data Port 3 Output TXD3 ± are the 10BASE-T differential data drivers for port 3. Pin Number Pin Name Pin Type Pin Description QuASI Interface (Continued) 42 QCLSN I/O Multiplexed collision error PHYAD 2 internal address input upon reset 43 QRX_CRS Output Multiplexed receive carrier sense Management Interface 40 MDC Input Management Interface Clock 41 MDIO I/O Management Interface Data Miscellaneous Pins 6 SCLK Input System Clock for QuASI Interface 7 QRST/STRB Input Active Low -- Reset and QuASI Channel 0 strobe 8 REXT Input External resistor for determining TXD drive levels Power Pins 1 VDDIO VDD1 1 VDD pin for digital Outputs (3.3 Volt Capable) 44 VSSIO VSS 1 VSS pin for digital Inputs/Outputs 39 VDD VDD 1 VDD pin for internal digital logic 9 VSS VSS 1 VSS pin for internal digital logic 14 VSSAUI VSS 1 Analog VSS pin for AUI circuit 29, 23, 17 VDDTX VDD 3 Analog VDD pins for TXD driver 26, 20 VSSTX VSS 2 Analog VSS pins for TXD driver 34 VSSRX VSS 1 Analog VSS pin for 10BASE-T Receivers |
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Similar Description - AM79C989JC |
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