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DM9081 Datasheet(PDF) 4 Page - Davicom Semiconductor, Inc. |
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DM9081 Datasheet(HTML) 4 Page - Davicom Semiconductor, Inc. |
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4 / 22 page  DM9081 10BASE-T Hub Controller 4 Final Version: DM9081-DS-F02 February 02, 2001 Pin Description Pin No. Pin Name I/O Description Transceiver 100, 1 99, 2 34, 31 33, 32 39, 36 38, 37 44, 41 43, 42 49, 46 48, 47 84, 87 85, 86 89, 92 90, 91 94, 97 95, 96 DTPO3+/- TPO3+/- TPO4+/- DTPO4+/- TPO5+/- DTPO5+/- TPO6+/- DTPO6+/- TPO7+/- DTPO7+/- TPO0+/- DTPO0+/- TPO1+/- DTPO1+/- TPO2+/- DTPO2+/- O TP Driver Outputs. The TPO+/- output generate 10Mbits/s Manchester-encoded data. The DTPO+/- outputs are one-half bit time delayed and inverted with respect to TPO+/-. These four outputs provide the TP drivers with pre-distortion capability 52, 51 54, 53 56, 55 58, 57 60, 59 62, 61 64, 63 66, 65 RXD7+/- RXD6+/- RXD5+/- RXD4+/- RXD3+/- RXD2+/- RXD1+/- RXD0+/- I 10BASE-T Port Different Data Receivers 70, 69 76, 75 TXP1, TXN1 TXP2, TXN2 O AUI Port Different Data Drivers. The outputs are source followers that require a 270 Ω pull-down resistor 72, 71 78, 77 RXP1, RXN1 RXP2, RXN2 I AUI Port Differential Receive Input Pair 74, 73 80, 79 CDP1, CDN1 CDP2, CDN2 I AUI Port Different Collision Input Pair Expansion Port 24 EXPOUT# O The assertion of this signal indicates that DM9081 is transmitting data on DAT pins. It is active low 22 EXPIN# I The assertion of this signal indicates that DM9081 is receiving data on DAT pins. The receiving data will be broadcast to the other ports. It is active low and is internally pulled high with a 100K Ω resistor 23 DAT I/O,Z The DAT pins of all DM9081 chips are inter-connected. The active DM9081 drives DAT with repeated data or jam signals in NRZ format. The inactive DM9081 receives the repeated data or jam signals from the DAT pin |
Similar Part No. - DM9081 |
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Similar Description - DM9081 |
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