
45732 AMD 780E Databook 3.10
© 2009 Advanced Micro Devices, Inc.
5-4
Proprietary
Electrical Characteristics
Table 5-9 DC Characteristics for the Memory Interface when Supporting DDR3
Symbol
Description
Minimum
Maximum
Comments
VIL(dc)
DC Input Low Voltage
-0.3V
VREF - 0.1V
For DQ and DQS
VIH(dc)
DC Input High Voltage
VREF + 0.1V
VDDQ + 0.3V
For DQ and DQS. (VDDQ is IO voltage of
memory device.)
VIL(ac)
AC Input Low Voltage
–
VREF - 0.15V
For DQ and DQS
VIH(ac)
AC Input High Voltage
VREF + 0.15V
–
For DQ and DQS
VUSH
Minimum Voltage Allowed for
Undershoot
- 0.3V
–
For DQ and DQS
VOSH
Maximum Voltage Allowed for
Overshoot
–
VDDQ + 0.3V
For DQ and DQS. (VDDQ is IO voltage of
memory device.)
VOI
Output Low Voltage
0.186V
0.305V
I_out = 16.5mA
VOH
Output High Voltage
1.4V
1.6V
I_out = -16.5mA
VREF
DC Input Reference Voltage
0.735V
0.765V
ILI
Input Leakage Current
10
A
15
A
ILO
Tri-state Leakage Current
10
A
15
A
IOL
Output Low Current
16.5mA
24.3mA
IOH
Output High Current
-15.8mA
-24.6mA
CIN
Input Capacitance
3pF
5pF
Table 5-10 DC Characteristics for the LVTM Interface in TMDS Mode
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
–
IDDLP
Average Supply Current at LPVDD
–
20.0
–
mA
2
IDDLV
Average Supply Current at LVDDR18 and
LVDDR33
–
100.0
–
mA
2
IOL
Output Low Current
–
8
–
mA
IOH
Output High Current
–
12
–
mA
IPDLP
Power Down Current at LPVDD
–
10.0
–
A
3
IPDLV
Power Down Current at LVDDR18 and
LVDDR33
–
10.0
–
A
3
Notes:
1 AVCC stands for the termination supply voltage of the receiver, which is 3.3V +/- 5%.
2 Measured under typical conditions, at minimum differential clock frequency and maximum DVI/HDMI™ PLL VOC frequency.
3 Measured under typical conditions, based on typical leakage values.
4 Figure 5-1 below illustrates some of the DC Characteristics of the DVI/HDMI interface.