CY2280PVC-11S Просмотр технического описания (PDF) - SpectraLinear Inc
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CY2280PVC-11S
SpectraLinear Inc
CY2280PVC-11S Datasheet PDF : 11 Pages
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CY2280
Pin Configurations
REF0 1
REF1 2
VSS
3
XTALIN 4
XTALOUT 5
VSS
6
PCICLK_F 7
PCICLK1 8
VDDPCI
9
PCICLK2 10
PCICLK3 11
VSS 12
PCICLK4 13
PCICLK5 14
VDDPCI
15
PCICLK6 16
PCICLK7 17
VSS 18
AVDD 19
VSS 20
VDDUSB
21
USBCLK0 22
USBCLK1 23
VSS
24
48
VDDREF
47 REF2
46
VDDAPIC
45 APIC0
44 APIC1
43 VSS
42 RESERVED
41
VDDCPU
40 CPUCLK0
39 CPUCLK1
38
VSS
37
VDDCPU
36 CPUCLK2
35 CPUCLK3
34
VSS
33 AVDD
32
VSS
31 PCI_STOP
30 CPU_STOP
29 PWR_DWN
28 N/C
27 SEL0
26 SEL1
25 SEL100 CY2280-1
REF0 1
REF1 2
VSS
3
XTALIN 4
XTALOUT 5
VSS
6
PCICLK_F 7
PCICLK1 8
VDDPCI
9
PCICLK2 10
PCICLK3 11
VSS 12
PCICLK4 13
PCICLK5 14
VDDPCI
15
PCICLK6 16
PCICLK7 17
VSS 18
AVDD 19
VSS 20
VDDUSB
21
USBCLK0 22
USBCLK1 23
VSS
24
48
VDDREF
47 REF2
46
VDDAPIC
45 APIC0
44 APIC1
43
VSS
42 RESERVED
41
VDDCPU
40 CPUCLK0
39 CPUCLK1
38
VSS
37
VDDCPU
36 CPUCLK2
35 CPUCLK3
34
VSS
33 AVDD
32
VSS
31 PCI_STOP
30 CPU_STOP
29 PWR_DWN
28 SEL_SS
27 SEL0
26 SEL1
25 SEL100
CY2280-11S
CY2280-21S
Pin Summary
Name
Pins
Description
VDDPCI
VDDUSB
VDDREF
VDDAPIC
VDDCPU
AVDD
VSS
XTALIN[1]
XTALOUT[1]
15, 9
3.3V Digital voltage supply for PCI clocks
21
3.3V Digital voltage supply for USB clocks
48
3.3V Digital voltage supply for REF clocks
46
2.5V Digital voltage supply for APIC clocks
41, 37
2.5V Digital voltage supply for CPU clocks
33, 19
Analog voltage supply, 3.3V
3, 6, 12, 18, 20, 24, 32, 34, 38, 43 Ground
4
Reference crystal input
5
Reference crystal feedback
PCI_STOP
31
Active LOW control input to stop PCI clocks
CPU_STOP
30
Active LOW control input to stop CPU clocks
PWR_DWN
29
Active LOW control input to power down device
SEL_SS
28
Spread spectrum select input (-11S and -21S options)
N/C
28
Spread spectrum select input (-1 option)
SEL0
27
CPU frequency select input, bit 0 (see Function Table)
SEL1
26
CPU frequency select input, bit 1 (see Function Table)
SEL100
25
CPU frequency select input, selects between 100 MHz and 66.6 MHz
(see Function Table)
CPUCLK[0:3] 40, 39, 36, 35
CPU clock outputs
PCICLK[1:7] 8, 10, 11, 13, 14, 16, 17
PCI clock outputs, at one-half or one-third the CPU frequency of 66.6 MHz
or 100 MHz respectively
PCICLK_F
7
Free-running PCI clock output
APIC[0:1]
45, 44
APIC clock outputs
REF[0:2]
1, 2, 47
3.3V Reference clock outputs
USBCLK[0:1] 22, 23
USB clock outputs
RESERVED 42
Reserved
Note:
R1e. vFo1r.0be,sNt oacvceumracbye, urs2e5a, p2a0ra0ll6el-resonant crystal, CLOAD = 18 pF.
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