CS4103 Datasheet, PDF (11/24 Pages) National Semiconductor (TI) – IEEE P1394a Physical Layer Device

Signal Definitions (Continued)
2.2.5 Power Supplies, Ground, Reserved, and No Connections
Signal Name
Pin
Type Description
VDDIO
VSSIO
VSS
VDD
VDDA
GNDA
R0
R1
VDDVCO
GNDVCO
VDDPLL
GNDPLL
RSVD0
RSVD1
NC
6, 34
16, 28
21, 80
29, 79
35, 54,
62, 63
39, 40,
41, 64
66
67
69
70
73
74
32, 33
31, 68
3, 9, 18,
20, 30,
36, 37,
38, 47,
48, 60,
65, 71,
72, 75
PWR
GND
GND
PWR
PWR
GND
--
--
PWR
GND
PWR
GND
I
I
---
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.
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.
Digital Ground Connections
Connect this pin to the digital ground plane.
Digital Supply Connections
Connect this pin to the digital power plane.
Analog Supply Connections
Connect this pin to the analog power plane.
Analog Ground Connections
Connect this pin to the analog ground plane.
Current Source Reference Resistor Connections
Sets the bias current for the CS4103 receivers. A resistor (5.76 KΩ +/–1%) is
connected to R0 and R1. Place this resistor as close as possible to the
CS4103.
VCO Analog Supply Connection
Connect this pin to the analog power plane.
VCO Analog Ground Connection
Connect this pin to the analog ground plane.
PLL Analog Supply Connection
Connect this pin to the analog power plane.
PLL Analog Ground Connection
Connect this pin to the analog ground plane.
Reserved
Tie these pins low.
Reserved
Tie these pins high.
No Connections (Total of 15)
These pins are not internally connected.
Revision 1.0
11
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