CY2210 Datasheet, PDF (2/10 Pages) Cypress Semiconductor – 133-MHz Spread Spectrum Clock Synthesizer/Driver with AGP, USB, and DRCG Support

CY2210
Pin Summary
Name
Pins
Description
V_SSREF
V_DDREF
V_SSPCI
V_DDPCI
V_SSAGP
V_DDAGP
V_SSUSB
V_DDUSB
V_SSCPU
V_DDCPU
V_SSCPU/2
V_DDCPU/2
V_SSAPIC
V_DDAPIC
AV_SS
AV_DD
XTALIN^[1]
XTALOUT^[1]
1
4
7, 13, 19
10, 16
20, 24
23, 27
29
31
40, 44
43, 47
48
51
52
56
38
39
5
6
3.3V Reference ground
3.3V Reference voltage supply
3.3V PCI ground
3.3V PCI voltage supply
3.3V AGP ground
3.3V AGP voltage supply
3.3V USB ground
3.3V USB voltage supply
2.5V CPU ground
2.5V CPU voltage supply
2.5V CPU/2 ground
2.5V CPU/2 voltage supply
2.5V APIC ground
2.5V APIC voltage supply
Analog ground to PLL and Core
Analog voltage supply to PLL and Core
Reference crystal input
Reference crystal feedback
CPUCLK [0–3] 41, 42, 45, 46
CPU clock outputs
PCICLK [1–7] 9, 11, 12, 14, 15, 17, 18
PCI clock outputs, synchronously running at 33.33 MHz
PCICLK_F
8
Free running PCI clock
CPUCLK/2
49, 50
CPU/2 clock outputs, drive memory clock generator
AGPCLK [0–3] 21, 22, 25, 26
AGP clock outputs, running at 66.66 MHz
APICCLK [0–2] 53, 54, 55
APIC clock outputs, running at 16.67 MHz
REFCLK [0–1] 2, 3
Reference clock outputs, 14.318 MHz
USBCLK
30
48-MHz USB clock output
CPU_STOP
36
Active LOW input, disables CPU and AGP clocks when asserted
PCI_STOP
37
Active LOW input, disables PCI clocks when asserted
PWR_DWN
35
Active LOW input, powers down part when asserted
SPREAD
34
Active LOW input, enables spread spectrum when asserted
SEL1
33
CPU frequency select input (See Function Table)
SEL0
32
CPU frequency select input (See Function Table)
SEL133
28
CPU frequency select input (See Function Table)
Note:
1. For best accuracy, use a parallel-resonant crystal, C_LOAD = 18 pF. For crystals with different C_LOAD, please refer to the application note, “Crystal Oscillator
Topics.”
Document #: 38-07204 Rev. *A
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