45732 AMD 780E Databook 3.10
© 2009 Advanced Micro Devices, Inc.
5-2
Proprietary
Electrical Characteristics
5.1.2
DC Characteristics
Table 5-2 DC Characteristics for 3.3V TTL Signals
Pins
Symbol
Description
Minimum Maximum
Unit
All pins belonging to
the VDD33 domain
(refer to pin
description tables in
this chapter).
VILdc
DC voltage at PAD pin that will produce
a stable low at the Y pin of macro*
–
0.7
V
VIHdc
DC voltage at PAD pin that will produce
a stable high at the Y pin of macro*
1.4
–
V
VILac
AC input low voltage
–
0.15
V
VIHac
AC input high voltage
2.5
–
V
VOLdc
Output low voltage**
–
0.53
V
VOHdc
Output high voltage**
2.46
–
V
IOLdc
Output low current at V=0.1V**
2.8
–
mA
IOHdc
Output high current at V=VDD33-0.1V**
2.6
–
mA
Note: *
Measured with edge rate of 1
s at PAD pin.
** For detailed current/voltage characteristics, please refer to the IBIS model.
Table 5-3 DC Characteristics for DDC Signals (DDC Mode)
Pins
Symbol
Description
Minimum
Maximum
Unit Note
DDC_DATA0/AUX0N
DDC_CLK0/AUX0P
DDC_DATA1/AUX1N
DDC_CLK1/AUX1P
VILdc
DC voltage at PAD pin that will produce a
stable low at the Y pin of macro
–
TBD
V
1
VIHdc
DC voltage at PAD pin that will produce a
stable high at the Y pin of macro
1.8
–
V
1
VILac
AC input low voltage
–
TBD
V
VIHac
AC input high voltage
2.3
–
V
VOL
Output low voltage
–
86mV @ I=3mA,
230mV@I=8mA
V
2, 3, 4
VOH
Output high voltage
VDD5-0.25
(VDD5 is external
5V DDC pull-up
supply)
–
V
2, 3, 4
IOL
Output low current at V=0.1V
0.55
6.25
mA
2, 3, 4
Notes:
1. Measured with edge rate of 1
s at PAD pin.
2. For detailed current/voltage characteristics, please refer to the IBIS model.
3. Measurement taken with PMOS/NMOS strength set to default values, PVT=Nominal Case.
4. Interface circuit is open drain. Pulled high by external power.
Table 5-4 DC Characteristics for AUX Signals (AUX Mode)
Pins
Symbol
Description
Minimum
Maximum
Unit
DDC_DATA0/AUX0N
DDC_CLK0/AUX0P
DDC_DATA1/AUX1N
DDC_CLK1/AUX1P
Vcm
Input/output common mode voltage
569
610
mV
Vdiff
Pad differential output swing
525
622
mV
Note:
The AUX signals comply with VESA’s
DisplayPort
™
Standard
. Please refer to the document for other electrical characteristics
of the signals.