
Power Management Pins
© 2009 Advanced Micro Devices, Inc.
45732 AMD 780E Databook 3.10
Proprietary
3-11
3.11
Power Management Pins
Table 3-12 DisplayPort™ Interface Multiplexed on the PCI Express
®
Graphics Interface
Pin Name
Ball
Reference DisplayPort™ Function
GFX_TX0P,
GFX_TX0N
A5/B5
Main Link Channel Pair 0 on the first DisplayPort™ connector
GFX_TX1P,
GFX_TX1N
A4/B4
Main Link Channel Pair 1 on the first DisplayPort connector
GFX_TX2P,
GFX_TX2N
C3/B2
Main Link Channel Pair 2 on the first DisplayPort connector
GFX_TX3P,
GFX_TX3N
D1/D2
Main Link Channel Pair 3 on the first DisplayPort connector
DDC_CLK0/AUX0P,
DDC_DATA0/AUX0N
A8/B8
Auxiliary Channel Pair 0 on the first DisplayPort connector
GFX_TX4P,
GFX_TX4N
E2/E1
Main Link Channel Pair 0 on the second DisplayPort connector
GFX_TX5P,
GFX_TX5N
F4/F3
Main Link Channel Pair 1 on the second DisplayPort connector
GFX_TX6P,
GFX_TX6N
F1/F2
Main Link Channel Pair 2 on the second DisplayPort connector
GFX_TX7P,
GFX_TX7N
H4/H3
Main Link Channel Pair 3 on the second DisplayPort connector
DDC_CLK1/AUX1P,
DDC_DATA1/AUX1N
B7/A7
Auxiliary Channel Pair 1 on the second DisplayPort connector
AUX_CAL
C8
Calibration for auxiliary pads.
Table 3-13 Power Management Pins
Pin Name
Type
Power
Domain
Ground
Domain
Functional Description
ALLOW_LDTSTOP
I/OD
VDD33
VSS
Allow LDTSTOP. The signal is used for controlling LDTSTOP assertions. When
running in CLMC mode it is an input from the CPU (LDTREQ#) or SB; when
running in legacy C3 and GSM modes, it is an output to the SB
1 = LDTSTOP# can be asserted
0 = LDTSTOP# has to be de-asserted
Note:
1.8V signalling can be used on the signal.
SYSRESET#
I
VDD33
VSS
Global Hardware Reset. This signal comes from the Southbridge.
SUS_STAT#
I
VDD33
VSS
Suspend Status. SUS_STAT# from the Southbridge is connected to the pin to gate
the sideport memory I/Os while power is ramping up and the POWERGOOD
signal to the RS780E is still low.
POWERGOOD
I
VDD18
VSS
Input from the motherboard signifying that the power to the RS780E is up and
ready. Signal High means all power planes are valid. It is not observed internally
until it has been high for more than six consecutive REFCLK cycles. The rising
edge of this signal is deglitched.