Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Microchip
:
EVB8740
Страница 1: ...for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage Any and all such uses without prior written approval of a...
Страница 2: ...tor The LAN8740A LAN8741A is connected to an RJ45 Ethernet jack with integrated magnetics for 10 100 connectivity A simplified block diagram of the EVB8740 EVB8741 can be seen in Figure 1 1 Note Thoug...
Страница 3: ...r is not present on the MII connector s 5V pins Connecting 5V simultaneously via the MII connector and TP2 may result in permanent damage to the board 2 1 2 VDDIO Power The LAN8740A LAN8741A s VDDIO p...
Страница 4: ...p View of the EVB8740 EVB8741 Table 2 1 PHYAD 2 0 Resistor Configuration PHYAD 2 0 PHYAD 2 0 PULL UP DOWN RESISTORS PHYAD2 PHYAD1 PHYAD0 R26 R35 R25 R36 R24 R37 000 Default Depopulate Populate Depopul...
Страница 5: ...3 R29 R32 R30 R31 000 10BASE T Half Duplex Auto neg disabled Depopulate Populate Depopulate Populate Depopulate Populate 001 10BASE T Full Duplex Auto neg disabled Depopulate Populate Depopulate Popul...
Страница 6: ...lator Configuration REGOFF The LAN8740A LAN8741A provides the ability to disable the internal 1 2V regulator When the regulator is disabled an external 1 2V must be supplied to the VDDCR pin via TP3 C...
Страница 7: ...regulated output When REGOFF is enabled the internal 1 2V regulator is disabled In this case an external 1 2V regulator must be supplied to test point TP3 Note 2 2 The LAN8740A LAN8741A s VDDIO power...
Страница 8: ...guration nINTSEL on page 6 for additional information Table 2 5 System Connections PLUG HEADER DESCRIPTION PART T1 RJ45 with Integrated LEDs Pulse J0011D01BNL J1 2x14 MII Header Note Refer Table 2 6 t...
Страница 9: ...Switches Table 2 7 P1 40 Pin Female MII Connector Pinout PIN DESCRIPTION PIN DESCRIPTION PIN DESCRIPTION PIN DESCRIPTION 1 5V 11 TXER Note 2 5 21 5V 31 GND 2 MDIO 12 TXCLK 22 GND 32 GND 3 MDC 13 TXEN...
Страница 10: ...Manual Revision 1 0 04 29 13 10 SMSC EVB8740 EVB8741 USER MANUAL 2 3 Mechanicals Figure 2 2 details the EVB8740 EVB8741 mechanical dimensions Figure 2 2 EVB8740 EVB8741 Mechanicals 1 450 3 000 0 125 0...
Страница 11: ...ard User Manual SMSC EVB8740 EVB8741 11 Revision 1 0 04 29 13 USER MANUAL 3 User Manual Revision History Table 3 1 Customer Revision History REVISION LEVEL DATE SECTION FIGURE ENTRY CORRECTION Rev 1 0...
Страница 12: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Microchip EVB8740...
