CY28372OXC

CY28372OXC Datasheet

CY28372

Part	Datasheet
CY28372OXC	CY28372OXC (pdf)

Related Parts	Information
CY28372OXCT	CY28372OXCT

PDF Datasheet Preview
CY28372 SiS 746 AMD Athlon /AMD Duron Clock Synthesizer • Supports AMD CPU • 3.3V and 2.5V power supply • Eight copies of PCI clocks • One 48-MHz USB clock • Two copies of ZCLK clocks • One 48-MHz/24-MHz programmable SIO clock • One differential CPU clock opendrain • One singled-ended CPU clock opendrain • SMBus support with readback capabilities • Spread Spectrum electromagnetic interference EMI reduction • 48-pin SSOP package CPU ZCLK REF x3 PCI AGP IOAPIC 48M 24_48M Block Diagram XIN XOUT XTAL OSC PLL Ref Freq PLL 1 FS0:3 CPU_STP# Divider Network PCI_STP# PLL2 Fract. Aligner SDATA SCLK Logic VDD_REF REF0:2 VDD_CPU CPUT1 CPUT0, CPUC0 VDD_Z ZCLK0:1 VDD_APIC APIC0:1 VDD_PCI PCIF0:1 PCI0:5 VDD_AGP AGP0:1 VDD_48 48 MHz 24_48MHz Pin Configuration VDD_REF 1 FS0/REF0 2 *FS1/REF1 3 REF2 4 GND_REF 5 XIN 6 XOUT 7 GND_Z 8 ZCLK0 9 ZCLK1 10 VDD_Z 11 PCI_STP# 12 VDD_PCI 13 *FS2/PCIF0 14 FS3/PCIF1 15 PCI0 16 PCI1 17 GND_PCI 18 VDD_PCI 19 PCI2 20 PCI3 21 PCI4 22 PCI5 23 GND_PCI 24 CY28372 48 VDD_APIC 47 IOAPIC1 46 IOAPIC0 45 GND_APIC 44 CPU_STP#* 43 CPUT1 42 VDD_CPU 41 GND_CPU 40 CPUT0 39 CPUC0 38 VDD_CPU 37 GNDA 36 VDDA 35 SCLK 34 SDATA 33 PD#* 32 GND_AGP 31 AGP0 30 AGP1 29 VDD_AGP 28 VDD_48 27 48MHZ 26 24_48MHZ 25 GND_48 SSOP-48 * Internal Pull-up 150k ** Internal Pull-down 150k Cypress Semiconductor Corporation • 3901 North First Street • San Jose, CA 95134 • 408-943-2600 [+] Feedback Pin Description Pin 6 Name XIN Ordering Information Ordering Code CY28372OC CY28372OCT Lead Free CY28372OXC CY28372OXCT Package Type 48-pin Small Shrunk Outline Package SSOP 48-pin Small Shrunk Outline Package SSOP Tape and Reel Operating Range Commercial, 0°C to 70°C Commercial, 0°C to 70°C 48-pin Small Shrunk Outline Package SSOP Commercial, 0°C to 70°C 48-pin Small Shrunk Outline Package SSOP Tape and Reel Commercial, 0°C to 70°C Layout Example FB C1 VDD33 C2 G VDD25 FB C1 12 13 V CY28372 V 48 47 46 G 45 44 43 V 42 G 41 40 39 V 38 G 37 V 36 35 34 33 G 32 31 30 V 29 V 28 27 26 G 25 FB = Dale ILB1206 - 300 100 MHz Cermaic Caps C1 = 10 - 22 µF C2 = µF C3 = .1µF G = VIA to GND plane layer V = VIA to respective supply plane layer Note Each supply plane or strip should have a ferrite bead and capacitors All bypass caps = .1-µf ceramic * For use with onboard video using 48 MHz for Dot Clock or connect to VDDQ3 Page 16 of 18 [+] Feedback Package Diagram 48-lead Shrunk Small Outline Package O48 CY28372 51-85061-*C Purchase of I2C components from Cypress, or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. Athlon and Duron are trademarks of Advanced Micro Devices, Inc. Dial-A-Frequency is a registered trademark of Cypress Semiconductor. All product and company names mentioned in this document are the trademarks of their respective holders. Page 17 of 18 Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. [+] Feedback Document History Page Document Title CY28372 SiS 746 AMD Athlon /AMD Duron Clock Synthesizer Document Number 38-07533 Orig. of ECN NO. Issue Date Change Description of Change

PDF Datasheet Preview

CY28372

SiS 746 AMD Athlon /AMD Duron Clock Synthesizer
• Supports AMD CPU
• 3.3V and 2.5V power supply
• Eight copies of PCI clocks
• One 48-MHz USB clock
• Two copies of ZCLK clocks
• One 48-MHz/24-MHz programmable SIO clock
• One differential CPU clock opendrain
• One singled-ended CPU clock opendrain
• SMBus support with readback capabilities
• Spread Spectrum electromagnetic interference EMI
reduction
• 48-pin SSOP package

CPU ZCLK

REF x3

PCI AGP IOAPIC 48M 24_48M

Block Diagram

XIN XOUT

XTAL OSC

PLL Ref Freq

PLL 1
**FS0:3 CPU_STP#

Divider Network

PCI_STP#

PLL2

Fract. Aligner

SDATA

SCLK

Logic

VDD_REF REF0:2

VDD_CPU CPUT1 CPUT0, CPUC0

VDD_Z ZCLK0:1 VDD_APIC APIC0:1 VDD_PCI PCIF0:1 PCI0:5

VDD_AGP AGP0:1

VDD_48 48 MHz
24_48MHz

Pin Configuration

VDD_REF 1 **FS0/REF0 2 **FS1/REF1 3

REF2 4 GND_REF 5

XIN 6 XOUT 7 GND_Z 8 ZCLK0 9 ZCLK1 10 VDD_Z 11 *PCI_STP# 12 VDD_PCI 13 **FS2/PCIF0 14 *FS3/PCIF1 15

PCI0 16 PCI1 17 GND_PCI 18 VDD_PCI 19 PCI2 20 PCI3 21 PCI4 22 PCI5 23 GND_PCI 24

CY28372
48 VDD_APIC 47 IOAPIC1 46 IOAPIC0 45 GND_APIC 44 CPU_STP#* 43 CPUT1 42 VDD_CPU 41 GND_CPU 40 CPUT0 39 CPUC0 38 VDD_CPU 37 GNDA 36 VDDA 35 SCLK 34 SDATA 33 PD#* 32 GND_AGP 31 AGP0 30 AGP1 29 VDD_AGP 28 VDD_48 27 48MHZ 26 24_48MHZ 25 GND_48

SSOP-48
* Internal Pull-up 150k ** Internal Pull-down 150k

Cypress Semiconductor Corporation
• 3901 North First Street
• San Jose, CA 95134
• 408-943-2600
[+] Feedback

Pin Description

Pin 6

Name XIN
Ordering Information
Ordering Code CY28372OC CY28372OCT Lead Free CY28372OXC CY28372OXCT

Package Type 48-pin Small Shrunk Outline Package SSOP 48-pin Small Shrunk Outline Package SSOP Tape and Reel

Operating Range Commercial, 0°C to 70°C Commercial, 0°C to 70°C
48-pin Small Shrunk Outline Package SSOP

Commercial, 0°C to 70°C
48-pin Small Shrunk Outline Package SSOP Tape and Reel Commercial, 0°C to 70°C

Layout Example

FB C1

VDD33 C2 G

VDD25

FB C1
12 13 V

CY28372

V 48 47 46

G 45 44 43

V 42 G 41
40 39 V 38 G 37 V 36 35 34 33 G 32 31 30 V 29 V 28 27 26 G 25

FB = Dale ILB1206 - 300 100 MHz

Cermaic Caps C1 = 10 - 22 µF C2 = µF

C3 = .1µF

G = VIA to GND plane layer

V = VIA to respective supply plane layer

Note Each supply plane or strip should have a ferrite bead and capacitors All bypass caps = .1-µf ceramic * For use with onboard video using 48 MHz for Dot Clock or connect to VDDQ3

Page 16 of 18
[+] Feedback

Package Diagram
48-lead Shrunk Small Outline Package O48

CY28372
51-85061-*C

Purchase of I2C components from Cypress, or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. Athlon and Duron are trademarks of Advanced Micro Devices, Inc. Dial-A-Frequency is a registered trademark of Cypress Semiconductor. All product and company names mentioned in this document are the trademarks of their respective holders.

Page 17 of 18

Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be
used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its
products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
[+] Feedback

Document History Page

Document Title CY28372 SiS 746 AMD Athlon /AMD Duron Clock Synthesizer Document Number 38-07533

Orig. of ECN NO. Issue Date Change

Description of Change

More datasheets: 26700-420 | 1188 | ADNS-5200 | M1779 SL001 | M1779 SL005 | M1779 SL002 | M3712 SL005 | M3712 SL002 | M3712 SL001 | CY28372OXCT

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived CY28372OXC Datasheet file may be downloaded here without warranties.

Datasheet ID: CY28372OXC 507723