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AM79C940JCW Datasheet(PDF) 17 Page - Advanced Micro Devices |
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AM79C940JCW Datasheet(HTML) 17 Page - Advanced Micro Devices |
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17 / 122 page  AMD 17 Am79C940 PIN SUMMARY Pin Name Pin Function Type Active Comment Attachment Unit Interface (AUI) DO+/DO– Data Out O Pseudo-ECL DI+/DI– Data In I Pseudo-ECL CI+/CI– Control In I Pseudo-ECL RXCRS Receive Carrier Sense I/O High TTL output. Input in DAI, GPSI port TXEN Transmit Enable O High TTL. TXEN in DAI port CLSN Collision I/O High TTL output. Input in GPSI DXCVR Disable Transceiver O Low TTL low STDCLK Serial Transmit Data Clock I/O Output. Input in GPSI SRDCLK Serial Receive Data Clock I/O Output. Input in GPSI Digital Attachment Interface (DAI) TXDAT+ Transmit Data + O High TTL. See also GPSI TXDAT– Transmit Data – O Low TTL TXEN Transmit Enable O Low TTL. See TXEN in GPSI RXDAT Receive Data I TTL. See also GPSI RXCRS Receive Carrier Sense I/O High TTL input. Output in AUI CLSN Collision I/O High TTL output. Input in GPSI DXCVR Disable Transceiver O High TTL high STDCLK Serial Transmit Data Clock I/O Output. Input in GPSI SRDCLK Serial Receive Data Clock I/O Output. Input in GPSI 10BASE–T Interface TXD+/TXD– Transmit Data O TXP+/TXP– Transmit Pre-distortion O RXD+/RXD– Receive Data I LNKST Link Status O Low Open Drain RXPOL Receive Polarity O Low Open Drain TXEN Transmit Enable O High TTL. TXEN in DAI port RXCRS Receive Carrier Sense I/O High TTL output. Input in DAI, GPSI port CLSN Collision I/O High TTL output. Input in GPSI DXCVR Disable Transceiver O High TTL high STDCLK Serial Transmit Data Clock I/O Output. Input in GPSI SRDCLK Serial Receive Data Clock I/O Output. Input in GPSI General Purpose Serial Interface (GPSI) STDCLK Serial Transmit Data Clock I/O Input TXDAT+ Transmit Data + O High TTL. See also DAI port TXEN Transmit Enable O High TTL. TXEN in DAI port SRDCLK Serial Receive Data Clock I/O Input. See also EADI port RXDAT Receive Data I TTL. See also DAI port RXCRS Receive Carrier Sense I/O High TTL input. Output in AUI CLSN Collision I/O High TTL input DXCVR Disable Transceiver O Low TTL low |
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