Intel Pentium 4 Processor CK00 Clock Synthesizer/Driver Design Guidelines

CK00 Clock Synthesizer/Driver Design Guidelines
Page 43
Table 6.9 Host Swing Select Functions – CKx_SKS, CKx_WBY, CKx_RGR
MultSel0 MultSel1
Board Target
Trace/Term Z
Reference R,
Iref =
Vdd/(3*Rr)
Output
Current
Voh @ Z,
Iref=2.32mA
0 0 60 ohms Rr = 475 1%,
Iref=2.32mA
Ioh = 5*Iref 0.70V @ 60
0 0 50 ohms Rr = 475 1%,
Iref=2.32mA
Ioh = 5*Iref 0.59V @ 50
0 1 60 ohms Rr = 475 1%
Iref=2.32mA
Ioh = 6*Iref 0.85V @ 60
0 1 50 ohms Rr = 475 1%,
Iref=2.32mA
Ioh = 6*Iref 0.70V @ 50
1 0 60 ohms Rr = 475 1%,
Iref=2.32mA
Ioh = 4*Iref 0.56V @ 60
1 0 50 ohms Rr = 475 1%,
Iref=2.32mA
Ioh = 4*Iref 0.47V @ 50
1 1 60 ohms Rr = 475 1%,
Iref=2.32mA
Ioh = 7*Iref 0.99V @ 60
1 1 50 ohms Rr = 475 1%,
Iref=2.32mA
Ioh = 7*Iref 0.82V @ 50
Note: The entries in boldface are the primary system configurations of interest. The outputs
should be optimized for these configurations.