CY28325 Cypress Semiconductor Corp., CY28325 Datasheet - Page 6

• Manufacturer Part Number: CY28325
• Description: FTG For Via Pentium 4 Chipsets
• Manufacturer: Cypress Semiconductor Corp.

Data Byte Configuration Map
Data Byte 0
Data Byte 1
Data Byte 2
Document #: 38-07119 Rev. **
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
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
1 = Select operating frequency by SEL[4:0] settings
SW Frequency selection bits. Refer to Frequency Selection Table
SW Frequency selection bits. Refer to Frequency Selection Table
Reserved
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)
1 = CPUT_CS_F and CPUC_CS_F are Free-running outputs
0 = CPUT_CS_F and CPUC_CS_F will be disabled when
CPU_STOP# is active
(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