CY28158
Switching Waveforms
(continued)
PCI_STOP#
CPU
(Internal)
PCI
(Internal)
PCI_F
(Free-Running)
PCI_STOP#
PCI
(External)
PWR_DWN#
CPU
(Internal)
PCI
(Internal)
PWR_DWN#
CPU
(External)
PCI
(External)
VCO
Crystal
Shaded section on the VCO and Crystal waveforms indicates that the VCO and crystal oscillator are active, and there is a valid clock.
Test Circuit
V
DD_PCI
, V
DD_3V66
,
V
DD_48MHZ
, V
DD_REF
,
V
DDA
1, 7, 8, 13, 19, 20, 21, 24, 29, 40, 44, 48, 52
4, 10, 16, 17, 22, 23, 27, 31, 39
CY28158
V
DD_CPU
,
V
DD_IOAPIC
43, 47, 51, 56
OUTPUTS
C
LOAD
Note: Each supply pin must have an individual decoupling capacitor on test circuit at 0.1 F.
Note: All capacitors must be placed as close to the pins as is physically possible.
Ordering Information
Ordering Code
CY28158PVC
CY28158PVCT
Lead Free
CY28158OXC
CY28158OXCT
O56
O56
56-Pin SSOP
56-Pin SSOP- Tape and Reel
Commercial
Commercial
Package Name
O56
O56
Package Type
56-Pin SSOP
56-Pin SSOP- Tape and Reel
Operating Range
Commercial
Commercial
Rev 1.0, November 20, 2006
Page 8 of 9
SPECTRALINEAR [ SPECTRALINEAR INC ]
