UPD72850A Ver la hoja de datos (PDF) - NEC => Renesas Technology

Número de pieza

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UPD72850A

IEEE1394 400Mbps PHY

NEC => Renesas Technology 

µPD72850A

1.4 IC

Name

IC

Pin No.

75, 76

I/O

Function

I

Internally Connected (High Clamped)

1.5 Power Supply Pins

Name

Pin No.

I/O

Function

AVDD

31, 36

-

Analog power 1 (APLL, OSC)

40, 45

-

Analog power 2 (Bias)

63, 67, 73

-

Analog power 3 (Cable Interface)

AGND

32, 33

-

Analog GND1 (PLL, OSC)

39, 44

-

Analog GND2 (Bias)

61

-

Analog GND3 (Common)

62

-

Analog GND4 (Speed signal)

65, 68-70, 72

-

Analog GND5 (Port)

DVDD

7, 10, 14,

26-28, 80

-

Digital VDD

DGND

4, 8, 11, 17,

-

Digital GND

20, 23, 29, 74

1.6 Other Pins

Name

TpBias0

TpBias1

TpBias2

RI0

Pin No.

48

47

46

41

RI1

42

FIL1

34

FIL0

35

XI

37

XO

38

I/O

Function

O

First port twisted pair output

O

Second port twisted pair output

O

Third port twisted pair output

-

Resistor connection pin0 for reference current generator.

Please connect to RI1 pin via 9.1 kΩ resistor.

-

Resistor connection pin1 for reference current generator.

Please connect to RI0 pin via 9.1 kΩ resistor.

-

APLL filter (No need to assemble)

-

APLL filter ground (No need to assemble)

-

Crystal oscillator connection XI

-

Crystal oscillator connection XO

Data Sheet S14452EJ1V0DS00

9

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