CY28435OXCT SPECTRALINEAR [SpectraLinear Inc], CY28435OXCT Datasheet

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CY28435OXCT

Manufacturer Part Number
CY28435OXCT
Description
Clock Generator for Intel Grantsdale Chipset
Manufacturer
SPECTRALINEAR [SpectraLinear Inc]
Datasheet
Rev 1.0, November 20, 2006
2200 Laurelwood Road, Santa Clara, CA 95054
Features
• Compliant to Intel CK410
• Supports Intel Prescott and Tejas CPU
• Selectable CPU frequencies
• Differential CPU clock pairs
• 100-MHz differential SRC clocks
• 96 MHz differential dot clock
• 48 MHz USB clocks
• 33 MHz PCI clock
• Dynamic Frequency Control
Block Diagram
VTTPWR_GD#/PD
DF_EN
DF[2:0]
FS_[E:A]
SDATA
SCLK
Xout
Xin
14.318MHz
Frequency
Crystal
Dynamic
Logic
I2C
SDATA
CPU
SRC
PLL
PLL
PLL
PLL
FIX
PLL Reference
Divider
Divider
Divider
Divider
Clock Generator for Intel Grantsdale Chipset
Watchdog
Timer
Tel:(408) 855-0555
PRELIMINARY
IREF
VDD_CPU
CPUT
CPUC
VDD_CPU
ITP_EN
VDD_SRC
SRCT
SRCC
VDD_SRC
VDD_SRC
SRCT4_SATA
SRCC4_SATA
VDD_48Mhz
DOT96T
DOT96C
VDD_48
USB
VDD_PCI
PCI
VDD_PCI
PCIF
SRESET#
VDD_RE
RE
F
F
• Dial-A-Frequency
• Watchdog
• Two Independent Overclocking PLLs
• Low-voltage frequency select input
• I
• Ideal Lexmark Spread Spectrum profile for maximum
• 3.3V power supply
• 56-pin SSOP and TSSOP packages
CPU
electromagnetic interference (EMI) reduction
x 2
2
C support with readback capabilities
Pin Configuration
Fax:(408) 855-0550
**SRESET_EN/PCIF1
**VTTPWRGD#/PD
*FS_B/USB48_1
**DF_EN/PCIF0
SRC
SRCC4_SATA
SRCT4_SATA
x 7
*FS_E/PCI4
VDD_SRC
VDD_SRC
DF2/PCI3
VDD_PCI
VDD_PCI
USB48_0
VSS_PCI
VSS_PCI
DOT96C
VDD_48
DOT96T
VSS_48
SRCC1
SRCC2
SRCC3
SRCT1
SRCT2
SRCT3
**FS_A
PCIF2
PCI5
* indicates internal pull-up
** indicates internal pull-down
PCI
x 9
10
11
1
2
3
4
5
6
7
8
9
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
www.SpectraLinear.com
REF
x 2
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
CY28435
DOT96
x 1
Page 1 of 22
PCI2/DF1
PCI1/DF0
PCI0/SRESET#
REF1/**FS_C
REF0/**FS_D
VSS_REF
XIN
XOUT
VDD_REF
SDATA
SCLK
VSS_CPU
CPUT0
CPUC0
VDD_CPU
CPUT1
CPUC1
IREF
VSSA
VDDA
SRCT7
SRCC7
VDD_SRC
SRCT6
SRCC6
SRCT5
SRCC5
VSS_SRC
USB
x 2

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CY28435OXCT Summary of contents

Page 1

Features • Compliant to Intel CK410 • Supports Intel Prescott and Tejas CPU • Selectable CPU frequencies • Differential CPU clock pairs • 100-MHz differential SRC clocks • 96 MHz differential dot clock • 48 MHz USB clocks • 33 ...

Page 2

Pin Description Pin No. Name 1,7 VDD_PCI 2,6 VSS_PCI 3,55,56 DF/PCI 4 FS_E/PCI4 5 PCI 8 DF_EN/PCIF0 9 SRESET_EN/PCIF 1 10 PCIF2 17 VTT_PWRGD#/PD 11 VDD_48 12 USB48_0 18 FS_A 13 VSS_48 14,15 DOT96T, DOT96C 16 FS_B/USB48_1 19,20,22,23, SRCT/C 24,25,30,31, ...

Page 3

Pin Description (continued) Pin No. Name 53 FS_C/REF1 54 SRESET#/PCI0 Frequency Select Pins (FS_[A:E]) Host clock frequency selection is achieved by applying the appropriate logic levels to FS_A, FS_B, FS_C, FS_D, and FS_E inputs prior to VTT_PWRGD# assertion (as seen ...

Page 4

Table 1. Command Code Definition Bit Block read or block write operation Byte read or byte write operation (6:0) Byte offset for byte read or byte write operation. For block read or block write operations, ...

Page 5

Control Registers Byte 0: Control Register 0 Bit @Pup SRC[T/C]4_SATA RESERVED Byte 1: Control Register 1 Bit @Pup DOT_96T/C 5 ...

Page 6

Byte 2: Control Register 2 (continued) Bit @Pup 0 1 Byte 3: Control Register 3 Bit @Pup SRC[T/C]4_SATA RESERVED Byte 4: Control Register 4 ...

Page 7

Byte 5: Control Register 5 (continued) Bit @Pup 0 0 Byte 6: Control Register 6 Bit @Pup 7 0 TEST_SEL 6 0 TEST_MODE PCI, PCIF and SRC clock outputs except those set to free ...

Page 8

Byte 8: Control Register 8 (continued) Bit @Pup RESERVED Byte 9: Control Register 9 Bit @Pup Byte 10: ...

Page 9

Byte 11: Control Register 11 Bit @Pup 7 0 CPU_DAF_N7 6 0 CPU_DAF_N6 5 0 CPU_DAF_N5 4 0 CPU_DAF_N4 3 0 CPU_DAF_N3 2 0 CPU_DAF_N2 1 0 CPU_DAF_N1 0 0 CPU_DAF_N0 Byte 12: Control Register 12 Bit @Pup 7 0 ...

Page 10

Byte 14: Control Register 14 (continued) Bit @Pup Recovery_N8 Byte 15: Control Register 15 Bit @Pup 7 0 Recovery Recovery Recovery Recovery Recovery N3 ...

Page 11

Figure 2. Crystal Capacitive Clarification Calculating Load Capacitors In addition to the standard external trim capacitors, trace capacitance and pin capacitance must also be considered to correctly calculate crystal loading. As mentioned previously, the capacitance on each side of the ...

Page 12

Dynamic Frequency Dynamic Frequency – Dynamic Frequency (DF technique to increase the CPU frequency dynamically from any starting value. The user selects the starting point, either by HW, FSEL, or DAF then enables DF. After that, DF will ...

Page 13

It is not recommended to enable overclocking and change the N values of both PLLs in the same SMBUS block write. Watchdog Timer The Watchdog timer ...

Page 14

PD functionality. The PD pin is an asynchronous active HIGH input used to shut off all clocks cleanly prior to shutting off power to the device. This signal is synchronized internal to the device prior to powering down ...

Page 15

FS_A, FS_B,FS_C VTT_PW RGD# PW RGD_VRM VDD Clock Gen Clock State State 0 Off Clock Outputs Off Clock VCO VDD_A = 2.0V S0 Power Off Rev 1.0, November 20, 2006 0.2-0.3mS W ait for Delay VTT_PW RGD# State 1 On ...

Page 16

Absolute Maximum Conditions Parameter Description V Core Supply Voltage DD V Analog Supply Voltage DD_A V Input Voltage IN T Temperature, Storage S T Temperature, Operating Ambient A T Temperature, Junction J Ø Dissipation, Junction to Case JC Ø Dissipation, ...

Page 17

AC Electrical Specifications Parameter Description Crystal T XIN Duty Cycle DC T XIN Period PERIOD XIN Rise and Fall Times XIN Cycle to Cycle Jitter CCJ L Long-term Accuracy ACC CPU at 0.7V (SSC ...

Page 18

AC Electrical Specifications Parameter Description T CPUT/C Cycle to Cycle Jitter CCJ L Long Term accuracy ACC CPUT and CPUC Rise and Fall Times Rise/Fall Matching RFM T Rise Time Variation R T Fall ...

Page 19

AC Electrical Specifications Parameter Description Edge Rate Falling edge rate T Any PCI clock to Any PCI clock Skew SKEW T PCIF and PCI Cycle to Cycle Jitter CCJ DOT T DOT96T and DOT96C Duty Cycle DC T DOT96T and ...

Page 20

AC Electrical Specifications Parameter Description Edge Rate Rising edge rate Edge Rate Falling edge rate T REF Cycle to Cycle Jitter CCJ ENABLE/DISABLE and SET-UP T Clock Stabilization from Power-up STABLE Test and Measurement Set-up For PCI Single-ended Signals and ...

Page 21

... Figure 11. Single-ended Output Signals (for AC Parameters Measurement) Ordering Information Part Number Lead-free CY28435OXC 56-pin SSOP CY28435OXCT 56-pin SSOP – Tape and Reel CY28435ZXC 56-pin TSSOP CY28435ZXCT 56-pin TSSOP – Tape and Reel Rev 1.0, November 20, 2006 Figure 10 ...

Page 22

Package Diagrams 28 29 0.088 0.092 0.025 BSC 56-Lead Thin Shrunk Small Outline Package, Type mm) Z56 0.249[0.009 13.894[0.547] 14.097[0.555] 0.851[0.033] 0.500[0.020] 0.950[0.037] BSC While SLI has reviewed all information herein for accuracy ...

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