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Signal Definitions (Continued)

2.2.5

Power Supplies, Ground, Reserved, and No Connections

Signal Name

Pin

Type

Description

VDDIO

6, 34

PWR

Digital Supply Connections

A split power plane with analog and digital power is recommended for the

CS4103. A single delineation divides the analog and digital pins of the

device. The power planes should be placed on either side of this delineation

beneath corresponding analog and digital pins of the CS4103.

VSSIO

16, 28

GND

Digital Ground Connections

A split ground plane with analog and digital grounds is recommended for the

CS4103. A single delineation divides the analog and digital pins of the

device. The ground planes should be placed on either side of this delineation

beneath corresponding analog and digital pins of the CS4103.

VSS

21, 80

GND

Digital Ground Connections

Connect this pin to the digital ground plane.

VDD

29, 79

PWR

Digital Supply Connections

Connect this pin to the digital power plane.

VDDA

35, 54,

62, 63

PWR

Analog Supply Connections

Connect this pin to the analog power plane.

GNDA

39, 40,

41, 64

GND

Analog Ground Connections

Connect this pin to the analog ground plane.

R0

66

--

Current Source Reference Resistor Connections

Sets the bias current for the CS4103 receivers. A resistor (5.76 K

Ω +/–1%) is

connected to R0 and R1. Place this resistor as close as possible to the

CS4103.

R1

67

--

VDDVCO

69

PWR

VCO Analog Supply Connection

Connect this pin to the analog power plane.

GNDVCO

70

GND

VCO Analog Ground Connection

Connect this pin to the analog ground plane.

VDDPLL

73

PWR

PLL Analog Supply Connection

Connect this pin to the analog power plane.

GNDPLL

74

GND

PLL Analog Ground Connection

Connect this pin to the analog ground plane.

RSVD0

32, 33

I

Reserved

Tie these pins low.

RSVD1

31, 68

I

Reserved

Tie these pins high.

NC

3, 9, 18,

20, 30,

36, 37,

38, 47,

48, 60,

65, 71,

72, 75

---

No Connections (Total of 15)

These pins are not internally connected.