CY28419
Byte 6: Control Register 6
Bit
@Pup
Name
Description
7
0
REF
PCIF
Test Clock Mode
0= Disabled, 1 = Enabled
PCI
3V66
USB_48
DOT_48
CPUT/C
SRCT/C
6
5
0
0
Reserved, Set = 0
CPUC0, CPUT0
CPUC1, CPUT1
CPUC2, CPUT2
CPUC3, CPUT3
FS_A & FS_B Operation
0 = Normal, 1 = Test mode
4
0
SRCT, SRCC
SRC Frequency Select
0 = 100 MHz, 1 = 200 MHz
3
2
0
0
Reserved, Set = 0
PCIF
PCI
Spread Spectrum Mode
0 = Spread Off, 1 = Spread On
3V66
SRC(T/C)
CPUT/ C
1
0
1
1
REF_1
REF_1 Output Enable
0 = Disabled, 1 = Enabled
REF_0
REF_0 Output Enable
0 = Disabled, 1 = Enabled
Byte 7: Vendor ID
Bit @Pup
Name
Revision Code Bit 3
Revision Code Bit 2
Revision Code Bit 1
Revision Code Bit 0
Vendor ID Bit 3
Description
7
6
5
4
3
2
1
0
0
0
0
0
1
0
0
0
Revision Code Bit 3
Revision Code Bit 2
Revision Code Bit 1
Revision Code Bit 0
Vendor ID Bit 3
Vendor ID Bit 2
Vendor ID Bit 2
Vendor ID Bit 1
Vendor ID Bit 1
Vendor ID Bit 0
Vendor ID Bit 0
Crystal Recommendations
The CY28419 requires a Parallel Resonance Crystal.
Substituting a series resonance crystal will cause the
CY28419 to operate at the wrong frequency and violate the
ppm specification. For most applications there is a 300-ppm
frequency shift between series and parallel crystals due to
incorrect loading.
Table 6. Crystal Recommendations
Frequency
(Fund)
Drive
(max.)
Shunt Cap Motional
(max.)
Tolerance
(max.)
Stability
(max.)
Aging
(max.)
Cut
Loading Load Cap
Parallel 20 pF
(max.)
14.31818 MHz
AT
0.1 mW
5 pF
0.016 pF
50 ppm
50 ppm
5 ppm
Rev 1.0,November 22, 2006
Page 7 of 15
SPECTRALINEAR [ SPECTRALINEAR INC ]
