CS1301 datasheet(21/25 Pages) NSC

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Signal Definitions (Continued)

2.2.12 Power, Ground, and No Connections

Signal Name

Ball

No.

Type

Description

VDDQ

K20

PWR

Quiet VDD for the PLL Subsystem. Should be supplied from VDD

through a low-Q series inductor. It should be bypassed for AC to VSSQ,

using a dual capacitor bypass (high and low frequency AC bypass).

VSSQ

L19

GND

Quiet VSS for the PLL Subsystem. ShouldbeAC bypassed toVDDQ,

otherwise left DC floating. It is connected on-chip to VSS.Noexternal

coil or other connection to board ground is needed; such a connection

would create a ground loop.

VDD

See Table

2-3 on

page 12

PWR

2.5V CS1301 Core Power Connection (Total of 24).

2.2V CS1311 Core Power Connection (Total of 24).

VCC

See Table

2-3 on

page 12

PWR

3.3V I/O Power Connection (Total of 24).

VSS

See Table

2-3 on

page 12

GND

Ground Connection (Total of 50).

A9, A10,

A11, B9,

B10, B11,

E19, D19

---

No Connection. For normal operation, leave unconnected.

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