78Q8430 データシートの表示（PDF） - Teridian Semiconductor Corporation
部品番号
コンポーネント説明
一致するリスト
78Q8430 Datasheet PDF : 88 Pages
| |||
DS_8430_001
78Q8430 Data Sheet
3.2.2 Media Dependent Interface (MDI) Pins
Table 3: MDI Pin Descriptions
Signal
TXP
TXN
RXP
RXN
Pin Number
97
98
94
93
Type
A
A
A
A
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.
3.2.3 LED Display (PHY) Pins
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.
Signal
LED0
LED1
Pin Number
90
92
Table 4: LED Pin Descriptions
Type
OZ
OZ
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).
3.2.4 EEPROM Pins
Table 5: EEPROM Interface Pin Descriptions
Signal
PROM_CS
PROM_CLK
PROM_DI
PROM_DO
Pin Number
75
74
77
76
Type
O
O
I
OZ
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.
Rev. 1.2
13
Share Link: 