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CY28404
Document #: 38-07510 Rev. *B
Page 7 of 20
Byte 5: Control Register 5
Bit
@Pup
Name
Description
7
1
DOT_48
DOT_48 Output Enable
0 = Disabled, 1 = Enabled
6
1
Reserved
Reserved, set = 1
5
HW
3V66_3/VCH/SELVCH
3V66_3/VCH/SELVCH Frequency Select
0 = 3V66 mode
1 = VCH (48 MHz) mode
May be written to override the power up value.
4
1
3V66_3/VCH/SELVCH
3V66_3/VCH/SELVCH Output Enable
0 = Disabled
1 = Enabled
3
1
Reserved
Reserved, set = 1
2
1
3V66_2
3V66_2 Output Enable
0 = Disabled, 1 = Enabled
1
1
3V66_1
3V66_1 Output Enable
0 = Disabled, 1 = Enabled
0
1
3V66_0
3V66_0 Output Enable
0 = Disabled, 1 = Enabled
Byte 6: Control Register 6
Bit
@Pup
Name
Description
7
0
Reserved
Reserved, set = 0
6
0
Reserved
Reserved, set = 0
5
0
Reserved
Reserved, set = 0
4
0
Reserved
Reserved, set = 0
3
0
Reserved
Reserved, set = 0
20
PCIF
PCI
3V66
CPUT,CPUC
Spread Spectrum Enable
0 = Spread Off, 1 = Spread On
1
1
REF_1
REF_1 Output Enable
0 = Disabled, 1 = Enabled
0
1
REF_0
REF_0 Output Enable
0 = Disabled, 1 = Enabled
Byte 7: Vendor ID
Bit
@Pup
Name
Description
7
0
Revision ID Bit 3
Revision ID Bit 3
6
1
Revision ID Bit 2
Revision ID Bit 2
5
0
Revision ID Bit 1
Revision ID Bit 1
4
0
Revision ID Bit 0
Revision ID Bit 0
3
1
Vendor ID Bit 3
Vendor ID Bit 3
2
0
Vendor ID Bit 2
Vendor ID Bit 2
1
0
Vendor ID Bit 1
Vendor ID Bit 1
0
0
Vendor ID Bit 0
Vendor ID Bit 0
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