![AMD RS690M Technical Reference Manual Download Page 48](http://html1.mh-extra.com/html/amd/rs690m/rs690m_technical-reference-manual_2921794048.webp)
41978 AMD RS690M Databook 3.06
© 2008 Advanced Micro Devices, Inc.
3-10
Proprietary
Clock Interface
3.6
Clock Interface
3.7
CRT and TV Interface
Table 3-7 Clock Interface
Pin Name
Type
Power
Domain
Ground
Domain
Integrated
Termination
Functional Description
TVCLKIN
I
VDDR3
VSS
–
Input pin for reference clock for external TV-out support (3.3V
signaling).
For the RS690T only:
SUS_STAT# from the SB can be connected to
this signal for putting the side-port memory into self-refresh before a
system warm reset; that would allow a more graceful reset of the
side-port memory interface.
HTREFCLK
I
HTPVDD
HTPVSS
-
HyperTransport 66MHz reference clock from external clock source
HTTSTCLK
I
HTPVDD
HTPVSS
-
HyperTransport Bus Test Clock. Drives test clock in test mode.
Connect to ground in functional mode.
GFX_REFCLKP,
GFX_REFCLKN
I
VDDPCIE VSSAPCIE
50
Ω
between
complements
Clock Differential Pairs for external graphics. Connect to external clock
generator when an external graphics card is implemented.
SB_CLKP,
SB_CLKN
I
VDDPCIE VSSAPCIE
50
Ω
between
complements
Clock Differential Pair for the Southbridge and general purpose PCI
Express
®
(PCI-E) devices. Connect to an external clock generator on
the motherboard.
OSCIN
I
VDDR3
VSS
Disabled
14.3181818MHz Reference clock input from the External Clock chip
(3.3 volt signaling).
Table 3-8 CRT and TV Interface
Pin Name
Type
Power
Domain
Ground
Domain
Integrated
Termination
Functional Description
RED
A-O
AVDD
AVSSN
–
Red for CRT monitor output, Cr or Pr for component video TV output
GREEN
A-O
AVDD
AVSSN
–
Green for CRT monitor output, or Y for component video TV output
BLUE
A-O
AVDD
AVSSN
–
Blue for CRT monitor output, Cb or Pb for component video TV output
Y
A-O
AVDD
AVSSN
–
SVID luminance output for TV out, or Y for component video TV output
C
A-O
AVDD
AVSSN
–
SVID chrominance output for TV out, or Pr for component video TV
output
COMP
A-O
AVDD
AVSSN
–
Composite video TV output, or Pb for component video TV output
DACHSYNC
A-O
VDDR3
VSS
50k
Ω
programmable:
PU/PD/none
Display Horizontal Sync
DACVSYNC
A-O
VDDR3
VSS
50k
Ω
programmable:
PU/PD/none
Display Vertical Sync
RSET
Other
N/A
AVSSQ
–
DAC internal reference to set full scale DAC current through 1%
resistor to AVSS
DACSDA
I/O
VDDR3
VSS
50k
Ω
programmable:
PU/PD/none
I
2
C Data for display (to video monitor)
DACSCL
I/O
VDDR3
VSS
50k
Ω
programmable:
PU/PD/none
I
2
C Clock for display (to video monitor)