AMD Geodeā„¢ LX Processors Data Book 611
Electrical Specifications 33234H
Figure 7-7. Drive Level and Measurement Points for Switching CharacteristicsTable 7-11. Flat Panel Interface Signals
Symbol Parameter Min Max Unit Comments
tCK DOTCLK period 6.0 ns 166 MHz
tCH DOTCLK High time 2.7 ns 45% tCK
tCL DOTCLK Low time 2.7 ns 45% tCK
DOTCLK long term output jitter 15% tCK Note 1
tVAL1 DRGB[31:0] Output Valid Delay time from rising
edge of DOTCLK
0.5 3.0 ns
tVAL2 DISPEN, LDEMOD Output Valid Delay time from
rising edge of DOTCLK
0.5 3.0 ns
tVAL3 HSYNC, VSYNC Output Valid Delay time from ris-
ing edge of DOTCLK
0.5 3.0 ns
Note 1. Measured as per VESA requirements. The jitter is observed at its worst case point on a scan line after HSYNC
triggers up to and including the next HSYNC trigger.
DOTCLK
Outputs
50%
Valid Output n+1
Valid Outp ut n50%
tVAL1,2,3 Min
tVAL1,2,3 Max
tCK