CY28330 Datasheet, PDF (1/15 Pages) SpectraLinear Inc – Clock Generator for AMD™ Hammer

CY28330
Clock Generator for AMD™ Hammer
Features
• Supports AMD Hammer CPU
• 2 differential Pair of CPU Clocks
• 6 Low Skew/Jitter PCI Clocks
• 1 Free-running PCI Clock
• 3 Low Skew/Jitter AGP/HT Clocks
• 148M Output for USB
• 1 programmable 24M or 48M for FDC
• 3 REF 14.318MHz Clocks
• Dial-a-Frequency Programmability
• Cypress Spread Spectrum for Best EMI Reduction
• SMBus Register Programmable Options
• 5V Tolerance SCLK and SDATA Lines
• 3.3V Operation
• Power Management Control Pins
• 48 Pin SSOP Package
Block Diagram
XIN
XOUT
14.31818MHz
XTAL
24_48MH/
24_48SEL#
FS(0:3)
PCISTOP#
SPREAD
SRESET#/PD#
SCLK
SDATA
Control Logic
/4
PLL1
/2
PLL2
/N
STOP
CNTL
Note:
1. All outputs except XOUT will be three-stated when FS(3:0) = 0000.
Table 1. Frequency Table (MHz)^[1]
FS
PCI_HT
(3:0) CPU SEL PCI_HT
CPU PCI_H PCI
PCI VC0 Div T Div Div
0000 Hi-Z X Hi-Z Hi-Z
0001 XIN 0 XIN/3 XIN/6
0001 XIN 1 XIN/6 XIN/6
0010 100.0 0/1 66.7/33.3 33.31 200 2 3/6 6
0011 100.0 0/1 66.7/33.3 33.31 200 2 3/6 6
0100 100.0 0/1 66.7/33.3 33.31 200 2 3/6 6
0101 133.3 0/1 66.7/33.3 33.31 266.6 2 4/8 8
0110 166.7 0/1 66.7/33.3 33.31 333.3 2 5/10 10
0111 200.0 0/1 66.7/33.3 33.31 400.0 2 6/12 12
1000 105.0 0/1 70.0/35.0 35.00 210.0 2 3/6 6
1001 110.0 0/1 73.3/36.7 36.67 220.0 2 3/6 6
1010 115.0 0/1 76.7/38.3 38.33 230.0 2 3/6 6
1011 120.0 0/1 60.0/30.0 30.00 240.0 2 4/8 8
1100 140.0 0/1 70.0/35.0 35.00 280.0 2 4/8 8
1101 150.0 0/1 60.0/30.0 30.00 300.0 2 5/10 10
1110 160.0 0/1 64.0/32.0 32.00 320.0 2 5/10 10
1111 180.0 0/1 60.0/30.0 30.00 360.0 2 6/12 12
=
Pin Configuration
REF(0:2)
FS0/REF0 1
VDD 2
XIN 3
USB
XOUT 4
VSS 5
24_48MH
*PCI33HT66SEL# 6
PCI33_HT66_0 7
PCI33_HT66_1 8
VDD 9
VSS 10
PCI33_HT66_2 11
*SRESET#/PD# 12
CPUT(0:1)
CPUC(0:1)
PCI33_0 13
PCI33_1 14
VSS 15
VDD 16
PCI33_F
PCI33_2 17
PCI33_3 18
VDD 19
PCI33_(0:5)
VSS 20
PCI33_4 21
PCI33_5 22
PCI33_HT66_(0:2)
FS3/PCI33_F 23
PCISTOP# 24
48 FS1/REF1
47 VSS
46 VDD
45 FS2/REF2
44 *SPREAD
43 VDDA
42 VSSA
41 CPUT0
40 CPUC0
39 VSS
38 VDD
37 CPUT1
36 CPUC1
35 VDD
34 VSS
33 VSSF
32 VDDF
31 USB
30 VSS
29 VDD
28 24_48MHz/SEL#
27 VSS
26 SDATA
25 SCLK
* = 150 KΩ Pull-up
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
Document #: 38-07366 Rev. *B
Revised December 26, 2002