CY28322-2 Cypress, CY28322-2 Datasheet

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CY28322-2

Manufacturer Part Number
CY28322-2
Description
133 Mhz Spread Spectrum Clock Synthesizer with Differential CPU Outputs
Manufacturer
Cypress
Datasheet
Cypress Semiconductor Corporation
Document #: 38-07145 Rev. *B
Logic Block Diagram
• Compliant with Intel CK-Titan and CK-408 clock
• Multiple output clocks at different frequencies
• Spread Spectrum clocking (down spread)
• Power-down features (PCI_STOP#, CPU_STOP#
• Two select inputs (Mode select & IC Frequency Select) Supports up to four CPU clock frequencies
• 48-pin TSSOP package
CPU_STOP#
PCI_STOP#
PWR_DWN#
synthesizer/driver specifications
PWR_DWN#)
— Two pairs of differential CPU outputs, up to 200 MHz
— Nine synchronous PCI clocks, three free-running
— Six 3V66 clocks
— Two 48-MHz clocks
— One reference clock at 14.318 MHz
— One VCH clock
PWR_GD#
SDATA
SCLK
X1
X2
S1:2
Gate
PLL 1
XTAL
PLL 2
OSC
SMBus
Logic
Network
Divider
133-MHz Spread Spectrum Clock Synthesizer with
Features
PWR
PWR
PWR
PWR
PLL Ref Freq
PWR
/2
PWR
Control
Clock
Control
Stop
Clock
Stop
3901 North First Street
PRELIMINARY
VDD_48MHz
VDD_3V66
3V66_0:1
3V66_2:4/
66BUFF0:2
USB (48MHz)
DOT (48MHz)
VDD_REF
REF
VDD_CPU
VCH_CLK/ 3V66_1
CPU1:2
VDD_PCI
3V66_5/ 66IN
CPU#1:2
PCI_F0:2
PCI0:5
Supports next generation Pentium processors using
differential clock drivers
Motherboard clock generator
Enables reduction of EMI and overall system cost
Enables ACPI-compliant designs
Widely available, standard package enables lower cost
— Support multiple CPUs and a chipset
— Support for PCI slots and chipset
— Supports AGP, DRCG reference, and Hub Link
— Supports USB host and graphic controllers
— Supports ISA slots and I/O chip
Differential CPU Outputs
San Jose
Pin Configurations
66BUFF0/3V66_2
66BUFF1/3V66_3
66BUFF2/3V66_4
66IN/3V66_5
PWR_DWN#
GND_CORE
VDD_CORE
XTAL_OUT
GND_3V66
VDD_3V66
PWR_GD#
GND_REF
GND_PCI
VDD_PCI
XTAL_IN
PCI_F0
PCI_F1
PCI_F2
PCI0
PCI1
PCI2
PCI3
PCI4
PCI5
Benefits
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
CA 95134
Top View
TSSOP
Revised December 14, 2002
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
3V66_0
VDD_3V66
PCI_STOP#
VDD_REF
REF0
S1
CPU_STOP#
VDD_CPU
CPU1
CPU#1
GND_CPU
VDD_CPU
CPU2
CPU#2
IREF
S2
USB
DOT
VDD_48 MHz
GND_48 MHz
3V66_1/VCH
GND_3V66
SCLK
SDATA
CY28322-2
408-943-2600

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CY28322-2 Summary of contents

Page 1

... Stop Clock PCI0:5 Control VDD_3V66 3V66_0:1 3V66_2:4/ 66BUFF0:2 3V66_5/ 66IN VDD_48MHz USB (48MHz) DOT (48MHz) VCH_CLK/ 3V66_1 • 3901 North First Street • CY28322-2 Differential CPU Outputs Benefits Pin Configurations TSSOP Top View VDD_REF XTAL_IN 1 48 REF0 XTAL_OUT 47 2 GND_REF 46 S1 ...

Page 2

... MHz Input 66IN/2 66IN 66 MHz Input 66IN/2 66 MHz 66 MHz 33 MHz 66 MHz 66 MHz 33 MHz TCLK/4 TCLK/4 TCLK/8 Reserved Reserved Reserved CY28322-2 Pin Description USB/DOT (MHz) REF0(MHz) (MHz) 14.318 MHz 48 MHz 14.318 MHz 48 MHz 14.318 MHz 48 MHz 14.318 MHz 48 MHz TCLK TCLK/2 Reserved ...

Page 3

... SMBus interface is provided according to SMBus specification. Through the Serial Data Interface, various device functions such as individual clock output buffers, can be individually enabled or disabled. CY28322-2 supports both block read and block write operations. The registers associated with the Serial Data Interface initialize to their default setting upon power-up, and therefore use of this interface is optional ...

Page 4

... Reserved Pin Description N/A PCI5 Output Enable 1 = Enabled Disabled PCI4 Output Enable 1 = Enabled Disabled PCI3 Output Enable 1 = Enabled Disabled PCI2Output Enable 1 = Enabled Disabled PCI1 Output Enable 1 = Enabled Disabled PCI0 Output Enable 1 = Enabled Disabled Write to”0” CY28322-2 Power-on Type Default R R N/A R/W N/A R N/A ...

Page 5

... Allow control of PCI_F0 with assertion of PCI_STOP Free running Stopped with PCI_STOP# PCI_F2 Output Enable PCI_F1Output Enable PCI_F0 Output Enable Pin Description Pin Description N/A N/A Tpd 66IN to 66BUFF propagation delay control DOT edge rate control USB edge rate control Description CY28322-2 Power-on Type Default R/W 1 R/W 1 R/W 0 R/W 0 R/W ...

Page 6

... Byte 6: Vendor ID (continued) Bit Bit 4 Revision Code Bit 0 Bit 3 Vendor ID Bit 3 Bit 2 Vendor ID Bit 2 Bit 1 Vendor ID Bit 1 Bit 0 Vendor ID Bit 0 Document #: 38-07145 Rev. *B PRELIMINARY Description CY28322-2 Power-on Type Default Page ...

Page 7

... Configuration OH REF, DOT, USB 3V66, DOT, PCI REF, DOT, USB 3V66, PCI Three-state VDD_CORE/VDD3.3 = 3.465V and @ IREF = 2.32 mA (Byte1, Bit [ VDD_CORE/VDD3.3 = 3.465V and @ IREF = 5.0 mA (Byte1, Bit [ VDD_CORE/VDD3.3 = 3.465V (Byte1, Bit [ CY28322-2 Min. Max. 3.135 3.465 2.85 3.465 22 ...

Page 8

... Measured differential waveform from –0.35V to +0.35V Measured at Crossover Measured at Crossover t Measured with test loads Measured with test loads Measured with test loads Measured with test loads = 3.3V. When V = 2.5V, duty cycle is measured at 1.25V CY28322-2 Test Conditions Min. 45 0.5 1.0 1 – – ...

Page 9

... Definition and Application of PWRGD# Signal VRM8.5 PWRGD# CLOCK S0 GENERATOR S1 Document #: 38-07145 Rev. *B PRELIMINARY Vtt PWRGD# BSEL0 3.3V 3.3V NPN 10K 10K CY28322-2 CPU BSEL1 3.3V 10K GMCH 10K Page ...

Page 10

... Output Duty Cycle Timing (CPU Differential Output All Outputs Rise/Fall Time OUTPUT t 2 CPU-CPU Clock Skew Host_b Host Host_b Host t 4 3V66-3V66 Clock Skew 3V66 3V66 t 5 Document #: 38-07145 Rev. *B PRELIMINARY CY28322-2 Page ...

Page 11

... Switching Waveforms (continued) PCI-PCI Clock Skew PCI PCI t 6 3V66-PCI Clock Skew 3V66 PCI t 7 CPU Clock Cycle-Cycle Jitter Host_b Host Cycle-Cycle Clock Jitter CLK Document #: 38-07145 Rev. *B PRELIMINARY CY28322-2 Page ...

Page 12

... CPU# 3V66 66IN USB REF Note: PCI_STOP# asserted LOW PWRDWN# Deassertion 66BUFF1/GMCH 66BUFF0,2 PCI PCI_F (APIC) PWR_DWN# CPU CPU# 3V66 66IN USB REF Note: PCI_STOP# asserted LOW Document #: 38-07145 Rev. *B PRELIMINARY Power-down Rest of Generator 10-30 s min. 100-200 s max. <3 ms CY28322-2 UNDEF Page ...

Page 13

... Possible glitch while Clock VCC is coming up. Will be gone in 0.2–0.3 mS delay. Wait for 0.2 -- 0.3 ms delay PWRGD# State 1 State 2 Figure 2. CPU Power BEFORE Clock Power Sample Wait for BSELS PWRGD# State 2 Figure 3. CPU Power AFTER Clock Power CY28322-2 Sample BSELS State State Page ...

Page 14

... *Option Core 0.005 0 =VIA to respective supply plane layer CY28322 VDDQ3 *Option Page ...

Page 15

... Test Node 30 pF Ordering Information Ordering Code CY28322ZC-2 Document #: 38-07145 Rev. *B PRELIMINARY 3, 7, 16, 27, 32, 41 11, 15, 28, 40, 44, 48 CY28322-2 Ref,USB Outputs 20 pF PCI,3V66 Outputs 1.0V Amplitude Package Type 48-pin TSSOP CY28322-2 1.0V Test Load 475 Test CPU Nodes 33 OUTPUTS 2 pF 63.4 63.4 Operating Range Commercial ...

Page 16

... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. PRELIMINARY 48-pin Thin Shrink Small Outline Package CY28322-2 Page ...

Page 17

... Document Title: CY28322-2 133-MHz Spread Spectrum Clock Synthesizer with Differential CPU Outputs Document Number: 38-07145 Issue REV. ECN NO. Date ** 112664 03/01/02 *A 114703 04/29/02 *B 122796 12/14/02 Document #: 38-07145 Rev. *B PRELIMINARY Orig. of Change IKA New Data Sheet INA Corrections on some PIN numbers. RBI Add Power up Requirements to Operating Conditions Information ...

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