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CY28378
........................ Document #: 38-07519 Rev. ** Page 7 of 21
Byte 2
Bit
@pup
Name
Pin Description
Bit 7
0
Reserved
Bit 6
1
PCI6
(Active/Inactive)
Bit 5
1
PCI5
(Active/Inactive)
Bit 4
1
PCI4
(Active/Inactive)
Bit 3
1
PCI3
(Active/Inactive)
Bit 2
1
PCI2
(Active/Inactive)
Bit 1
1
PCI1
(Active/Inactive)
Bit 0
1
PCI0
(Active/Inactive)
Byte 3
Bit
@Pup
Name
Pin Description
Bit 7
1
PCI_F2
(Active/Inactive)
Bit 6
1
PCI_F1
(Active/Inactive)
Bit 5
1
PCI_F0
(Active/Inactive)
Bit 4
0
Reserved
Bit 3
1
CPU_ITP, CPU_ITP#
(Active/Inactive)
Bit 2
0
Reserved
Bit 1
1
REF1
(Active/Inactive)
Bit 0
1
REF0
(Active/Inactive)
Byte 4
Bit
@Pup
Name
Pin Description
Bit 7
0
MULTSEL_Override
This bit control the selection of IREF multiple.
0 = HW control; IREF multiplier is determined by MULTSEL[0:1] input pins
1 = SW control; IREF multiplier is determined by Byte[4], Bit[5:6].
Bit 6
HW
SW_MULTSEL1
IREF multiplier
00 = Ioh is 4 x IREF
01 = Ioh is 5 x IREF
10 = Ioh is 6 x IREF
11 = Ioh is 7 x IREF
Bit 5
HW
SW_MULTSEL0
Bit 4
0
Reserved
Bit 3
0
Reserved
Bit 2
0
Reserved
Bit 1
0
Reserved
Bit 0
0
Reserved
Vendor Test Mode (always program to 0)
Byte 5
Bit
@Pup
Name
Pin Description
Bit 7
HW
Latched FS4 input
Latched FS[4:0] inputs. These bits are read only.
Bit 6
HW
Latched FS3 input
Bit 5
HW
Latched FS2 input
Bit 4
HW
Latched FS1 input
Bit 3
HW
Latched FS0 input
Bit 2
0
FS_Override
0 = Select operating frequency by FS[4:0] input pins
1 = Select operating frequency by SEL[4:0] settings
Bit 1
0
SEL 3V66
0 = 48-MHz output on pin 27, 1 = 66-MHz output on pin 27
Bit 0
1
SEL 48MHZ
0 = 24-MHz,1 = 48-MHz
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