41978 AMD RS690M Databook 3.06
© 2008 Advanced Micro Devices, Inc.
3-14
Proprietary
Power Pins
3.12
Power Pins
TMDS_HPD
I/O
VDDR3
VSS
50k
Ω
programmable:
PU/PD/none
TMDS Hot Plug Detect. It monitors the hot-plug line for panel
detection. It is a 3.3V CMOS compatible input. When not used for
hot plug detection, it can also be used as output to the voltage
regulator for pulse-width modulation of various voltages on the
motherboard.
VDD_HT_PKG
Other
VDD_HT
VSS
–
The pin is for connecting a calibration resistor to the VDD_HT
power plane. The VDD_HT_PKG pin is connected to the VDD_HT
power pins via package routing, so that a calibration resistor for the
VDD_HT power plane can be connected to the RS690M through
the VDD_HT_PKG pin, and the VDD_HT power plane does not
have to be extended physically for the purpose.
VDDA_12_PKG
Other
VDDA_12
VSS
–
The pins are for connecting calibration resistors to the VDDA_12
power plane. VDDA_12_PKG pins are connected to the VDDA_12
power pins via package routing, so that the calibration resistors for
the VDDA_12 power plane can be connected to the RS690M
through the VDDA_12_PKG pins, and the VDDA_12 power plane
does not have to be extended physically for the purpose.
Table 3-13 Power Pins
Pin Name
Voltage
Pin
Count
Ball Reference
Comments
AVDD
2.5V or 3.3V
2
B22, C22
Dedicated power for the DAC. Effort should be made at the board
level to provide as clean a power as possible to this pin to avoid
noise injection, which can affect display quality. Adequate
decoupling should be provided between this pin and AVSS.
AVDDQ
1.8V
1
A21
DAC Bandgap Reference Voltage
AVDDDI
1.8V
1
A20
Dedicated digital power for the DAC
VDD_CORE
1.0-1.2V
32
A19, A4, A7, A9, B19, B9,
C9, D20, D9, G20, H11, J11,
J19, L11, L13, L15, L17,
M12, M14, N11, N13, N15,
P12, P14, P17, R11, R13,
R15, U11, U12, U14, U15
Core power
VDD_18
1.8V
2
J14, J15
Core transform power for GPIOs and power for DFT_GPIOs
VDDA_12
1.2 V
20
RS690M:
AB3, AB4, AC3,
AD2, AE1, AE2, B1, C1, D1,
D2, D3, E2, E3, E6, F4, G7,
L9, M9, U7, W7
RS690T:
AB3, AB4, AC3,
AC5, AD2, AE2, B1, C1, D1,
D2, D3, E2, E3, E6, F4, G7,
L9, M9, U7, W7
PCI-E interface main I/O power
VDDR
1.8
3
AC12, AD12, AE12
IO power for debug interface (1.8V)
VDD_HT
1.2V
RS690M:
15
RS690T
:
7
RS690M:
AA17, AB17,
AB19, AC18, AC19, AC20,
AD21, AD22, AD23, AD24,
AE23, AE24, AE25, W17,
Y17
RS690T
:
AD22, AD23,
AD24, AE22, AE23, AE24,
AE25
I/O power for HyperTransport interface
VDD_MEM
(RS690T only)
1.8V
10
AA9, AB9, AC7, AC8, AD6,
AD7, AD8, AE6, AE7, AE8
Isolated power for side-port memory and debug I/Os
Table 3-12 Miscellaneous Pins (Continued)
Pin Name
Type
Power
Domain
Ground
Domain
Integrated
Termination
Functional Description