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AR8327-AL1A-R 数据表(PDF) 19 Page - List of Unclassifed Manufacturers |
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AR8327-AL1A-R 数据表(HTML) 19 Page - List of Unclassifed Manufacturers |
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19 / 394 page  Atheros Communications, Inc. AR8327/AR8327N Seven-port Gigabit Ethernet Switch • 19 SON A76 OA Serdes differential output pair SIP A78 IA Serdes differential input pair SIN B67 IA Serdes differential input pair Miscellaneous RBIAS B9, B30 OA Connect 2.37 kresistor to GND. The resistor value is adjustable, depending on the PCB. RESET_L B43 IH Chip reset, active low. The active low duration must be greater than 10ms. TESTMODE B65 I 0 Normal mode 1Test mode XTLI B10 IA Crystal oscillator input, connect a 27 pF capacitor to GND. An external 25 MHz clock with swing from 0–1 V can be injected to this pin. When an external clock source is used, the 27 pF capacitor should be removed from this pin and the 27 pF capacitor at XTLO should be maintained. XTLO B11 OA Crystal oscillator output, connect a 27 pF capacitor to GND INT_n B68 I/O, PU Interrupt, active low. see the global interrupt register for detail VREF B8, A35 OA Reference voltage, put a 1 nF cap to GND Symbol Pin Type Description Power AVDD B3, B6, A13, A15, A18, B21, B24, B27, B29, B33, B36, A47, A77 P Analog 1.1V power input DVDD B1, A20, A53, B50, B54, B56, B61, B76 P Digital 1.1V power input VDD15_REG_0 B59 MAC 0 interface power source. It can be connected to external 2.5V power or only connect an external capacitor 1uF and using internal LDO for 1.8V or 1.5V interface power. VDD15_REG_1 A56 P MAC 6 interface power source. It can be connected to external 2.5V power or only connect an external capacitor 1uF when using internal LDO for 1.8V or 1.5V interface power. FILCAP_15 B62, A71, A61 P connect to an external capacitor 0.1uF for power supply stablization. VDD33_SVR A86 p The 3.3V power for internal switching regulator LX B75 AO The output of internal switching regulator and connected to an inductor 4.7uH, 1A to generate 1.1V power Table 1-1. Signal to Pin Relationships and Descriptions (continued) Symbol Pin Type Description |
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