CY28325PVC-2 Cypress Semiconductor Corp., CY28325PVC-2 Datasheet - Page 6

• Manufacturer Part Number: CY28325PVC-2
• Description: Frequency Timing Generators For PC And Server Motherboards
• Manufacturer: Cypress Semiconductor Corp.

Data Byte Configuration Map
Data Byte 0
Data Byte 1
Data Byte 2
Document #: 38-07119 Rev. *A
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
42, 41
35, 34
40, 39
Pin#
Pin#
Pin#
21
19
18
17
15
14
12
11
–
–
–
–
–
–
–
–
–
–
–
–
–
Reserved
SEL2
SEL1
SEL0
FS_Override
SEL4
SEL3
Reserved
Reserved
Spread Select2
Spread Select1
Spread Select0
CPUT_CS, CPUC_CS
CPUT_1, CPUC_1
CPUT_0, CPUC_0
CPU_CS_F STOP Control
PCI8
PCI7
PCI6
PCI5
PCI4
PCI3
PCI2
PCI1
Name
Name
Name
PRELIMINARY
Reserved
1 = Select operating frequency by SEL[4:0] settings
Reserved
SW Frequency selection bits. Refer to Frequency Selection Table
SW Frequency selection bits. Refer to Frequency Selection Table
SW Frequency selection bits. Refer to Frequency Selection Table
0 = Select operating frequency by FS[4:0] input pins
SW Frequency selection bits. Refer to Frequency Selection Table
SW Frequency selection bits. Refer to Frequency Selection Table
Reserved
“000” = OFF
“001” = Reserved
“010” = Reserved
‘011” = Reserved
“100“ = ± 0.25%
“101“ = – 0.5%
“110“= ±0.5%
“111“ = ±0.38%
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
0 = CPUT_CS_F and CPUC_CS_F will be disabled when
CPU_STOP# is active
1 = CPUT_CS_F and CPUC_CS_F are Free-running outputs
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
(Active/Inactive)
Description
Pin Description
Description
CY28325-2
Page 6 of 19
Power-on
Power-on
Power-on
Default
Default
Default
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1