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AM79C973VCW 数据表(PDF) 14 Page - Advanced Micro Devices |
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AM79C973VCW 数据表(HTML) 14 Page - Advanced Micro Devices |
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14 / 304 page ![]() 14 Am79C973/Am79C975 P R E L I M INARY Figure 49. OnNow Functional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Figure 50. Pattern Match RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Figure 51. Address Match Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 Figure 52. External Clock Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231 Figure 53. PMD Interface Timing (PECL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 Figure 54. PMD Interface Timing (MLT-3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 Figure 55. 10 Mbps Transmit (TX±) Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 233 Figure 56. 10 Mbps Receive (RX±) Timing Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 233 Figure 57. Normal and Tri-State Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 Figure 58. CLK Waveform for 5 V Signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Figure 59. CLK Waveform for 3.3 V Signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Figure 60. Input Setup and Hold Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Figure 61. Output Valid Delay Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 Figure 62. Output Tri-state Delay Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 Figure 63. EEPROM Read Functional Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237 Figure 64. Automatic PREAD EEPROM Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238 Figure 65. JTAG (IEEE 1149.1) TCK Waveform for 5 V Signaling . . . . . . . . . . . . . . . 238 Figure 66. JTAG (IEEE 1149.1) Test Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 239 Figure 67. EBCLK Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240 Figure 68. Expansion Bus Read Timing 240 Figure 69. Expansion Bus Write Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241 Figure 70. Standard Data Transfer on the Serial Management Interface . . . . . . . . . . 247 Figure 71. Data Transfer with Change in Direction (with wait state) . . . . . . . . . . . . . . 247 Figure 72. Write Byte Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248 Figure 73. Read Byte Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248 Figure 74. Block Write Command 249 Figure 75. Block Read Command 250 Figure 76. System Management Interface Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 Figure 77. Media Independent Interface 268 Figure 78. Frame Format at the MII Interface Connection . . . . . . . . . . . . . . . . . . . . . 270 Figure 79. MII Receive Frame Tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 Figure 80. Transmit Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 Figure 81. Receive Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 Figure 82. MDC Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279 Figure 83. Management Data Setup and Hold Timing . . . . . . . . . . . . . . . . . . . . . . . . 280 Figure 84. Management Data Output Valid Delay Timing . . . . . . . . . . . . . . . . . . . . . . 280 Figure 85. Reject Timing - External PHY MII @ 25 MHz . . . . . . . . . . . . . . . . . . . . . . . 281 Figure 86. Reject Timing - External PHY MII @ 2.5 MHz 281 Figure 87. Receive Frame Tag Timing with Media Independent Interface . . . . . . . . . 282 Figure 88. LAPP Timeline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287 Figure 89. LAPP 3 Buffer Grouping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288 Figure 90. LAPP Timeline for Two-Interrupt Method . . . . . . . . . . . . . . . . . . . . . . . . . . 292 Figure 91. LAPP 3 Buffer Grouping for Two-interrupt Method . . . . . . . . . . . . . . . . . . 293 |
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