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CY28442-2
....................... Document #: 38-07691 Rev. *B Page 6 of 19
Byte 3: Control Register 3
Bit
@Pup
Name
Description
7
0
SRC7
Allow control of SRC[T/C]7 with assertion of PCI_STP# or SW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
6
0
SRC6
Allow control of SRC[T/C]6 with assertion of PCI_STP# or SW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
5
0
SRC5
Allow control of SRC[T/C]5 with assertion of PCI_STP# or SW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
4
0
SRC4
Allow control of SRC[T/C]4 with assertion of PCI_STP# or SW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
3
0
SRC3
Allow control of SRC[T/C]3 with assertion of PCI_STP# or SW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
2
0
SRC2
Allow control of SRC[T/C]2 with assertion of PCI_STP# or SW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
1
0
SRC1
Allow control of SRC[T/C]1 with assertion of PCI_STP# or SW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
0
RESERVED
Byte 4: Control Register 4
Bit
@Pup
Name
Description
7
0
96_100_SSC
96_100_SSC Drive Mode
0 = Driven in PWRDWN, 1 = Tri-state
6
0
DOT96T/C
DOT_PWRDWN Drive Mode
0 = Driven in PWRDWN, 1 = Tri-state
5
0
RESERVED
4
0
PCIF1
Allow control of PCIF1 with assertion of SW and HW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
3
0
PCIF0
Allow control of PCIF0 with assertion of SW and HW PCI_STP#
0 = Free running, 1 = Stopped with PCI_STP#
2
1
CPU[T/C]2
Allow control of CPU[T/C]2 with assertion of CPU_STP#
0 = Free running, 1 = Stopped with CPU_STP#
1
CPU[T/C]1
Allow control of CPU[T/C]1 with assertion of CPU_STP#
0 = Free running, 1 = Stopped with CPU_STP#
0
1
CPU[T/C]0
Allow control of CPU[T/C]0 with assertion of CPU_STP#
0 = Free running, 1 = Stopped with CPU_STP#
Byte 5: Control Register 5
Bit
@Pup
Name
Description
7
0
SRC[T/C]
SRC[T/C] Stop Drive Mode
0 = Driven when PCI_STP# asserted,1 = Tri-state when PCI_STP#
asserted
6
0
CPU[T/C]2
CPU[T/C]2 Stop Drive Mode
0 = Driven when CPU_STP# asserted,1 = Tri-state when CPU_STP#
asserted
5
0
CPU[T/C]1
CPU[T/C]1 Stop Drive Mode
0 = Driven when CPU_STP# asserted,1 = Tri-state when CPU_STP#
asserted
4
0
CPU[T/C]0
CPU[T/C]0 Stop Drive Mode
0 = Driven when CPU_STP# asserted,1 = Tri-state when CPU_STP#
asserted
3
0
SRC[T/C][7:1]
SRC[T/C] PWRDWN Drive Mode
0 = Driven when PD asserted,1 = Tri-state when PD asserted
2
0
CPU[T/C]2
CPU[T/C]2 PWRDWN Drive Mode
0 = Driven when PD asserted,1 = Tri-state when PD asserted
1
0
CPU[T/C]1
CPU[T/C]1 PWRDWN Drive Mode
0 = Driven when PD asserted,1 = Tri-state when PD asserted
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