78Q8430-100CGTR/F Maxim Integrated Products, 78Q8430-100CGTR/F Datasheet - Page 13

• Manufacturer Part Number: 78Q8430-100CGTR/F
• Description: Telecom ICs 10/100MAC+PHY MULTI MEDIA OFFLOAD CNTRLR
• Manufacturer: Maxim Integrated Products

DS_8430_001
3.2.2
3.2.3
The LED pins use standard logic drivers. They output a logic low when the LED is meant to be on and
are tri-state when it is meant to be off. The LED cathode should be connected to the output pin and a
series resistor from the power supply connected to the LED anode.
3.2.4
Rev. 1.2
Signal
TXP
TXN
RXP
RXN
Signal
LED0
LED1
Signal
PROM_CS
PROM_CLK
PROM_DI
PROM_DO
Media Dependent Interface (MDI) Pins
LED Display (PHY) Pins
EEPROM Pins
Pin Number
Pin Number
Pin Number
90
92
97
98
94
93
75
74
77
76
Table 5: EEPROM Interface Pin Descriptions
Type
Type
OZ
OZ
A
A
A
A
Type
OZ
O
O
I
Table 4: LED Pin Descriptions
Table 3: MDI Pin Descriptions
Description
Transmit Output Positive/Negative
Transmitter outputs for both 10BASE-T and 100BASE-TX.
MDI-X Mode: Receive Input Positive/Negative
Receiver inputs for both 10BASE-T and 100BASE-TX.
Receive Input Positive/Negative
Receiver inputs for both 10BASE-T and 100BASE-TX.
MDI-X Mode: Transmit Output Positive/Negative
Transmitter outputs for both 10BASE-T and 100BASE- TX.
Description
PHY display LED0 (Link OK)
The default for LED0 is Link OK (LED is on for link established).
PHY display LED1 (Activity)
The default for LED1 is Link Activity (LED blinks for Rx or Tx data
transferred).
Description
EEPROM Chip Select
Used to frame transmissions to and from an external
EEPROM.
EEPROM Clock
Clock for transmitting to and from an external EEPROM/ROM.
This is compatible with the slowest commercial parts, which
specify a maximum frequency of 1 MHz.
EEPROM Data In
Data line for transmitting from the external EEPROM to the
controller. Must be high with no EEPROM present.
EEPROM Data Out
Transfers data from the controller to an external
EEPROM/ROM.
78Q8430 Data Sheet
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