CY28322-2 Cypress, CY28322-2 Datasheet - Page 4

• Manufacturer Part Number: CY28322-2
• Description: 133 Mhz Spread Spectrum Clock Synthesizer with Differential CPU Outputs
• Manufacturer: Cypress

Document #: 38-07145 Rev. *B
Data Byte Configuration Map
Data Byte 0: Control Register (0 = Enable, 1 = Disable)
Data Byte 1
Data Byte 2
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit
Bit
Bit
8, 9, 10, 11,
4, 5, 6, 10,
11, 12, 13,
16, 17, 18,
39, 43, 38,
12, 13, 14,
Affected
33, 35
Pin#
43,39,
38, 39
42, 43
38, 39
42, 43
31
42
Pin#
Pin#
–
–
–
–
14
13
12
10
–
–
–
9
8
PCI [0:6]
CPU[2:1]
3V66[1:0]
TBD
3V66_1/VCH
CPU [2:1]
CPU# [2:1]
PCI [5:0]
–
–
–
N/A
CPU1:2
CPU2
CPU2#
CPU1
CPU1#
Reserved
CPU2
CPU2#
CPU1
CPU1#
Reserved
N/A
PCI5
PCI4
PCI3
PCI2
PCI1
PCI0
Reserved
Name
Name
Name
Spread Spectrum Enable
0 = Spread Off, 1 = Spread On
TBD
VCH Select 66 MHz/48 MHz
0 = 66 MHz, 1 = 48 MHz
CPU_STOP#
Reflects the current value of the external CPU_STOP# pin
PCI_STOP#
(Does not affect PCI_F [2:0] pins)
S2–Reflects the value of the S2 pin sampled on power-up
S1–Reflects the value of the S1 pin sampled on power-up
Reserved
CPU Mult0 Value
Three-state CPU1:2 during power-down
0 = Normal; 1 = Three-stated
Allow Control of CPU2 with assertion of CPU_STOP#
0 = Not free running; 1 = Free running
Allow Control of CPU1 with assertion of CPU_STOP#
0 = Not free running;1 = Free running
Reserved
CPU2 Output Enable
1 = Enabled; 0 = Disabled
CPU1Output Enable
1 = Enabled; 0 = Disabled
Reserved
N/A
PCI5 Output Enable
1 = Enabled, 0 = Disabled
PCI4 Output Enable
1 = Enabled; 0 = Disabled
PCI3 Output Enable
1 = Enabled; 0 = Disabled
PCI2Output Enable
1 = Enabled; 0 = Disabled
PCI1 Output Enable
1 = Enabled; 0 = Disabled
PCI0 Output Enable
1 = Enabled; 0 = Disabled
Write to”0”
PRELIMINARY
Pin Description
Description
Description
Type
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Type
R/W
R/W
R/W
CY28322-2
R
R
R
R
R
R
R
Page 4 of 17
Power-on
Power-on
Power-on
Default
Default
Default
N/A
N/A
N/A
N/A
N/A
0
0
0
0
1
1
1
0
1
1
1
1
1
1
1
0
0
0
1