CY28441
Document #: 38-07679 Rev. **
Page 7 of 20
6
0
Test Clock Mode Entry Control
0 = Normal operation, 1 = REF/N or Hi-Z mode,
5
0
Reserved
Reserved, Set = 0
4
1
REF
REF Output Drive Strength
0 = 1X, 1 = 2X
3
1
PCIF, SRC, PCI
SW PCI_STP Function
0=SW PCI_STP assert, 1= SW PCI_STP deassert
When this bit is set to 0, all STOPPABLE PCI, PCIF and SRC outputs will
be stopped in a synchronous manner with no short pulses.
When this bit is set to 1, all STOPPED PCI, PCIF and SRC outputs will
resume in a synchronous manner with no short pulses.
2
Externally
selected
CPUT/C
FS_C Reflects the value of the FS_C pin sampled on power up
0 = FS_C was low during VTT_PWRGD# assertion
1
Externally
selected
CPUT/C
FS_B Reflects the value of the FS_B pin sampled on power up
0 = FS_B was low during VTT_PWRGD# assertion
0
Externally
selected
CPUT/C
FS_A Reflects the value of the FS_A pin sampled on power up
0 = FS_A was low during VTT_PWRGD# assertion
Byte 6: Control Register 6 (continued)
Bit
@Pup
Name
Description
Byte 7: Vendor ID
Bit
@Pup
Name
Description
7
0
Revision Code Bit 3
Revision Code Bit 3
6
0
Revision Code Bit 2
Revision Code Bit 2
5
0
Revision Code Bit 1
Revision Code Bit 1
4
0
Revision Code Bit 0
Revision Code 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
BYTE 8: CLKREQ Control Register
Bit
@Pup
Name
Description
7
0
Reserved
Reserved
6
1
CLKREQ#B
SRC[T/C]5 CLKREQ#B control
1 = SRC[T/C]5 stoppable by CLKREQ#B pin
0 = SRC[T/C]5 not controlled by CLKREQ#B pin
5
0
CLKREQ#B
SRC[T/C]3 CLKREQ#B control
1 = SRC[T/C]3 stoppable by CLKREQ#B pin
0 = SRC[T/C]3 not controlled by CLKREQ#B pin
4
0
CLKREQ#B
SRC[T/C]1 CLKREQ#B control
1 = SRC[T/C]1 stoppable by CLKREQ#B pin
0 = SRC[T/C]1 not controlled by CLKREQ#B pin
3
0
Reserved
Reserved
2
1
CLKREQ#A
SRC[T/C]4 CLKREQ#A control
1 = SRC[T/C]4 stoppable by CLKREQ#A pin
0 = SRC[T/C]4 not controlled by CLKREQ#A pin
1
0
CLKREQ#A
SRC[T/C]2 CLKREQ#A control
1 = SRC[T/C]2 stoppable by CLKREQ#A pin
0 = SRC[T/C]2 not controlled by CLKREQ#A pin
0
0
CLKREQ#A
SRC[T/C]0 CLKREQ#A control
1 = SRC[T/C]0 stoppable by CLKREQ#A pin
0 = SRC[T/C]0 not controlled by CLKREQ#A pin
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