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DM9008F Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers |
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DM9008F Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers |
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6 / 68 page  DM9008 ISA/Plug & Play Super Ethernet Contoller 6 Final Version :DM9008-DS-F02 June 14, 2000 6 8 10 34 94 - 92 91 IRQ3 IRQ4 IRQ5 IRQ9 IRQ10-12 IRQ15 O, Z INTERRUPT REQUESTS: These are 8 interrupt request pins. Only one pin, which is decoded from Configuration Register A, can be activated; the other pins are left floating. The activated pin will go high when an interrupt request is generated from the ENC module of the DM9008 MEMORY INTERFACE PINS 79 EECS O EEPROM CHIP SELECT: This signal goes high when the EEPROM is selected by the DM9008 80 BPCS O BOOT ROM CHIP SELECT: This signal goes low when the PC reads the boot ROM data 64 - 71 (64) (65) (66) (66) (69) (70) MD0 - MD7 (EEDI) (EEDO) (EECK) (LEDSW) (BNCSW) (SLOT) I/O, Z MEMORY DATA BUS: These are the memory data signals for the boot ROM When the EEPROM is loaded or written, MD0, 1, 2 are used as the EEPROM signals * EEPROM DATA IN: This pin is used as the serial input data signal from the EEPROM * EEPROM DATA OUT: This pin is used as the serial output data signal to the EEPROM * EEPROM CLOCK: This pin is used as the EEPROM clock signal These memory data pins can also be used as switches when the DM9008 is in reset state. There is an approximately 100K pull-low resistor on each pin, and a 10K pull-high resistor can be connected to a pin when it is switched to logic high LED mode switch: see page 67 for details. * When this pin pulled high upon reset, pin 54 outputs 312.5KHz * SLOT SELECTION: When this pin is pulled to high, the DM9008 is in NE2000 16-bit mode 63 - 56 PA0 - PA7 O BOOT ROM PAGE ADDRESS. When the boot ROM is accessed, PA0-PA7 are used as the page address of the boot ROM NETWORK INTERFACE PINS 37 38 TX- TX+ O TRANSMIT OUTPUT: Differential line driver which sends the encoded data to the transceiver. The outputs are source followers which require 270 ohm pull-down resistors 54 BNCEN O BNC OUTPUT ENABLE: This pin goes high if the value of the Configuration Register B bit 1 is low and bit 0 is high. Typically, this pin is used to control the DC-DC converter to enable or disable the UM9092A (Coaxial Transceiver Interface) * Output 312.5KHz clock: when the 69 pin (BNCSW) is pulled high, this pin output 312.5KHz clock 78 X1 O CRYSTAL FEEDBACK OUTPUT: Used in crystal connection only. Connect to ground when using an external clock 77 X2 I CRYSTAL or EXTERNAL CLOCK INPUT |
Similar Part No. - DM9008F |
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Similar Description - DM9008F |
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