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AC207-DS04-405-R 데이터시트(PDF) 25 Page - Broadcom Corporation. |
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AC207-DS04-405-R 데이터시트(HTML) 25 Page - Broadcom Corporation. |
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25 / 60 page ![]() Preliminary Data Sheet AC207 07/08/02 B roa dcom Document AC207-DS04-405-R Pin Descriptions Page 15 LED DISPLAY/CONFIGURATION/PROM INTERFACE The LED pins are shared with reset-read configuration pins, test pins and EEPROM interface. The value applied on the reset-read pins is only valid at the end of the reset cycle. The EEPROM interface is active after the reset cycle. Once the data in the EEPROM is read, the same pins are used for LED display. 48 LED outputs are available through an 6x8 matrix. Table 9: LED Pins Pin Name Pin # Type Description LED_LN[5] LED_LN[4] LED_LN[3] LED_LN[2] LED_LN[1] LED_LN[0] 50 51 52 53 54 55 O 48 mA Enable corresponding LED display line in the display matrix, active low out- put. The detail of how to program and connect the LEDs is in the LED Setup section. LED_LN*[5]: Display 10BT collision rate and segment collision status. LED_LN*[4]: Display 100-Mbps Collision rate and segment collision status LED_LN*[3]: Display 10M segment utilization rate LED_LN*[2]: Display 100M segment utilization rate LED_LN*[1]: Programmable LED display. The default is to display 10M Link/ Activity information of each port. LED_LN*[0]: Programmable LED display. The default is to display 100M Link/Activity information of each port. LED_D[7] LED_D[6] LED_D[5] LED_D[4] LED_D[3] LED_D[2] LED_D[1] LED_D[0] 125 124 123 122 121 120 119 118 I/O, D Output for LED display information of each column in the display matrix. Ac- tive high output. Table 10: Configuration and Set-up Pin Name Pin # Type Description Mode[3] (MII_RXD2) Mode[2] (LED_D[4]) Mode[1] (LED_D[1]) Mode[0] (LED_D[0]) 37 122 119 118 I,D Mode[3:2] MII 00 MII 01 7-wire 10 not used 11 not used TP125 (MII_RXD1) 36 I 1:select 1:1.25 xformer ChipID[1] (LED_D[2]) Chip- ID[0] (LED_D[3]) 120 121 I,D The device must be assigned with ChipID=0 IBREF 112 I Reference bias resistor. Connected to analog ground through a 10k (1%) resistor. |
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