W83194AR-WE Datasheet, PDF (9/16 Pages) Winbond – 200MHZ CLOCK FOR WHITNEY CHIPSET

W83194AR-We
6.4 Register 3: CPU Clock Register (1 = Active, 0 = Inactive)
Bit @PowerUp Pin
Description
7
X
- FS0#
6
1
7 3V66_0(Active / Inactive)
5
1
8 3V66_1(Active / Inactive)
4
X
- FS1#
3
1
47 IOAPIC(Active / Inactive)
2
1
44 CPUCLK1 (Active / Inactive)
1
1
43 CPUCLK0 (Active / Inactive)
0
X
- FS2#
PRELIMINARY
6.5 Register 4: Control Register (1 = Active, 0 = Inactive)
Bit @PowerUp Pin
Description
7
0
- SSEL3 (Frequency table selection by software via I²C )
6
0
- SSEL2 ( Frequency table selection by software via I²C)
5
0
- ^{SSEL1 ( Frequency table selection by software via I2C)}
4
0
- SSEL0 ( Frequency table selection by software via I²C)
3
0
- 0 = Selection by hardware
1 = Selection by software I²C - Bit (1,2, 4:6)
2
0
- SSEL4 (Frequency table selection by software via I²C )
1
0
- SSEL5 (Frequency table selection by software via I²C )
0
0
- Reserved
6.6 Register 5: Control Register (1 = Active, 0 = Inactive)
Bit @PowerUp Pin
Description
7
0
- ^{0 = ±0.5% Center type Spread Spectrum Modulation}
1 = ±0.75% Center type Spread Spectrum Modulation
6
1
- SKEW2(SDRAM to CPU Skew programming bit)
5
0
- SKEW1(SDRAM to CPU Skew programming bit)
4
0
- SKEW0(SDRAM to CPU Skew programming bit)
3
X
- FS3#
2
X
- FS4#
1
0
- ^{0 = Normal}
1 = Spread Spectrum enabled
0
X
- APIC_SEL#
Publication Release Date: Nov. 1999
-9-
Revision 0.50