CS1311 datasheet(21/25 Pages) NSC

21 / 25 page

Revision 2.2

www.national.com

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.

CS1311 Datasheet(PDF) 21 Page - National Semiconductor (TI)

CS1311 Datasheet(HTML) 21 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Datasheet Download

Link URL