cy28src02 Cypress Semiconductor Corporation., cy28src02 Datasheet - Page 5

• Manufacturer Part Number: cy28src02
• Description: Pci-express Clock Generator
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 001-00042 Rev. *A
Byte 4: Control Register 4 (continued)
Byte 5: Control Register 5
\
Byte 6: Control Register 6
Byte 7: Control Register 7
Crystal Recommendations
The CY28SRC02 requires a Parallel Resonance Crystal.
Substituting a series resonance crystal will cause the
Table 4. Crystal Recommendations
14.31818 MHz
Frequency
Bit
Bit
Bit
Bit
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
(Fund)
@Pup
@Pup
@Pup
@Pup
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
1
0
0
1
1
1
0
0
0
Cut
AT
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
TEST_SEL
TEST_MODE
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Loading
Parallel
Name
Name
Name
Name
12pF - 16pF
Load Cap
PRELIMINARY
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
REF/N or Tri-state Select
1 = REF/N Clock, 0 = Tri-state
Test Clock Mode Entry Control
1 = REF/N or Tri-state mode, 0 = Normal operation
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
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 1
Vendor ID Bit 0
(max.)
1 mW
Drive
CY28SRC02 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.
Shunt Cap
(max.)
7 pF
Description
Description
Description
Description
Tolerance
+ 50ppm
(max.)
Stability
+ 50ppm
(max.)
CY28SRC02
Page 5 of 10
Aging
(max.)
5 ppm
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