w83194br-603 Winbond Electronics Corp America, w83194br-603 Datasheet - Page 17

• Manufacturer Part Number: w83194br-603
• Description: Winbond Clock Generator For Intel P4 Springdale Series Chipset
• Manufacturer: Winbond Electronics Corp America

7.15 Register 14: Control Register (Default: 0Ah)
7.16 Register 15: Control Register (Default: 2Ch)
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CPUT_DRI
SRCT_DRI
SPCNT [5]
SPCNT [4]
SPCNT [3]
SPCNT [2]
SPCNT [1]
SPCNT [0]
INV_CPU
Reserved
SPSP_TYPE
SPSP1
SPSP0
ASKEW [2]
ASKEW [1]
ASKEW [0]
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
NAME
NAME
PWD
PWD
0
0
0
1
0
1
1
0
0
0
0
0
1
0
1
0
CPUT output state in during POWER DOWN or Stop mode assertion.
1: Driven
0: Tristate (Floating)
CPUC always tri-state (floating) in power down Assertion.
SRC_T output state in during POWER DOWN or Stop mode assertion.
1: Driven
0: Tristate (Floating)
SRC_C always tri-state (floating) in power down Assertion.
Spread Spectrum Programmable time, the resolution is 280ns. Default
period is 11.8us
Invert the CPU phase, 0: Default, 1: Inverse
Reserved
Spread spectrum implementation method
1: Pendulum type, 0: Original
Spread Spectrum type select.
CPU to 3V66 skew control, Skew resolution is 340ps
Expand the skew direction is same as
CPU_3V66_SKEW [2:0] setting
00: Down
01: Down
10: Center +/- 0.5%
11: Center +/- 0.25%
(2*Iref)
(6*Iref => STOP mode)
(2*Iref => POWER DOWN)
W83194BR-603/W83194BG-603
0.5%
1%
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DESCRIPTION
DESCRIPTION
Publication Release Date: March, 2006
Revision 0.7