CM3131 Datasheet, PDF (4/10 Pages) California Micro Devices Corp – Triple Linear Voltage Regulator for DDR-I/-II Memory

Functional Description (cont’d)
VCC
3V/3.3V
X
<VCC MIN
X
VSTBY
SEL
5V/3.3V
ON
5V/3.3V
OFF
X
ON
<VSTBY MIN
OFF
VDDQ 1,2
VDDQ
VDDQ STBY
0V
0V
VTT
VDDQ / 2
0V
0V
0V
Truth Table for CM3131-01
CM3131
S to R
S0
S1
S2
S3
S4
S5
VCC
VSTBY
SEL
3V/3.3V 5V/3.3V
ON
3V/3.3V 5V/3.3V
ON
3V/3.3V 5V/3.3V
ON
3V/3.3V 5V/3.3V
OFF
<VCC MIN 5V/3.3V
OFF
<VCC MIN 5V/3.3V
OFF
VDDQ OUT VTT OUT
VDDQ
VDDQ / 2
VDDQ
VDDQ
VDDQ / 2
VDDQ / 2
VDDQ STBY
0V
0V
0V
0V
0V
Sequencing Matrix for CM3131-01 for Suspend to RAM operation
No S to R
S0
S1
S2
S3
S4
S5
VCC
3V/3.3V
3V/3.3V
3V/3.3V
<VCC MIN
<VCC MIN
<VCC MIN
VSTBY
5V/3.3V
5V/3.3V
5V/3.3V
5V/3.3V
5V/3.3V
5V/3.3V
SEL
ON
ON
ON
ON
ON
ON
VDDQ OUT
VDDQ
VDDQ
VDDQ
0V
0V
0V
VTT OUT
VDDQ / 2
VDDQ / 2
VDDQ / 2
0V
0V
0V
Sequencing Matrix for CM3131-01 for Suspend to RAM Not Supported
VCC
3V/3.3V
<VCC MIN
<VCC MIN
X
VSTBY
EN
5V/3.3V
ON
5V/3.3V
ON
X
OFF
<VSTBY MIN
OFF
VDDQ OUT
VDDQ
VDDQ STBY
0V
0V
VTT OUT
VDDQ / 2
0V
0V
0V
Truth Table for CM3131-11
© 2004 California Micro Devices Corp. All rights reserved.
02/02/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 Tel: [phone] Fax: [phone]
www.calmicro.com
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