
Electrical Characteristics
© 2009 Advanced Micro Devices, Inc.
45732 AMD 780E Databook 3.10
Proprietary
5-5
Figure 5-1 DC Characteristics of the TMDS Interfaces
Table 5-11 DC Characteristics for the TMDS Interface Multiplexed on the PCI-E Gfx Lanes
Symbol
Parameter
Min
Typical
Max
Unit
Note
VH
Single-ended High Level Output Voltage
AVCC - 10
–
AVCC + 10
mV
1
VL
Single-ended Low Level Output Voltage
AVCC - 600
–
AVCC - 400
mV
1
VSW
Single-ended Output Swing
400
–
600
mV
VOS
Differential Output Overshoot (Ringing)
–
–
15%*2VSW
–
VUS
Differential Output Undershoot (Ringing)
–
–
25%*2VSW
–
Notes:
1 AVCC stands for the termination supply voltage of the receiver, which is 3.3V +/- 5%.
2 Figure 5-1 below illustrates some of the DC Characteristics of the TMDS interface.
VSW
VHmax
VHmin
VLmax
VLmin
2VSW
VOS
VUS
Single-ended Waveforms
Differential Waveform
VOS
VUS