VT8601 Via, VT8601 Datasheet - Page 17

• Manufacturer Part Number: VT8601
• Description: Slot-1 / Socket-370 PCI North Bridge
• Manufacturer: Via

A virtual screen can be created with the Apollo ProMedia Graphics Controller . When this function is enabled, a selected portion
of a large image can be shown on a smaller display. The image can also be moved across the whole screen, either up or down.
The Apollo ProMedia Graphics Controller is able to automatically detect DDC monitors with I
CRT Power Management (VESA DPMS)
The Apollo ProMedia Graphics Controller conforms to the standard power management schemes defined by VESA™ for CRTs.
The Apollo ProMedia Graphics Controller supports four states of VESA™ Display Power Management Signaling (DPMS), which
decrease monitor power consumption after timeout periods. VESA™ DPMS power down states (ready, standby, suspend, and
off) specify HSYNC and VSYNC signals to control the monitor power down state.
Flat Panel Interface
The Apollo ProMedia Flat Panel interface is designed to support industry standard TFT and STN panels. It can also be used to
drive external TMDS or LVDS transmitters. The interface supports both 18-bit and 24-bit display modes. Optionally, an 18+18
panel can be supported utilizing external latches.
Video Capture Interface
The Video Module Interface (VMI) is supported for video devices such as MPEG1 and MPEG2. Additionally, the zero-wait state
host write buffer, read cache, and memory mapped I/O increase operating speeds and contribute to peak performance levels. All
I/O interfaces are 5V tolerant, capable of interfacing with external devices operating at 5V, even though the Apollo ProMedia
Graphics Controller runs at 2.5V. Graphics system throughput is further enhanced by a command FIFO, allowing maximum bus
transfer speed for applications such as Windows™ or AutoCAD™ that directly access video memory.
Complete Hardware Compatibility
The Apollo ProMedia Graphics Controller is fully compliant with the VESA™ DDC and VAFC standards. The Apollo ProMedia
Graphics Controller is 100% VGA compatible at both the BIOS and Driver level, allowing full compatibility with virtually any
VGA application software. The Apollo ProMedia Graphics Controller provides hardware support to DirectDraw™, offering high
speed game graphics on Windows 98 . The Apollo ProMedia Graphics Controller meets the requirements of PC99 as well,
supporting a unique ID for each customer and a unique ID for each model.
Revision 1.3 September 8, 1999
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PD[23]
PD[22]
PD[21]
PD[20]
PD[19]
PD[18]
PD[17]
PD[16]
PD[15]
PD[14]
PD[13]
PD[12]
PD[11]
PD[10]
PD[9]
PD[8]
PD[7]
PD[6]
PD[5]
PD[4]
PD[3]
PD[2]
PD[1]
PD[0]
Pin
24 Bit
Mode
G0
G1
G2
G3
G4
G5
G6
G7
B0
B1
R0
R1
B2
B3
R2
R3
B4
B5
B6
B7
R4
R5
R6
R7
18 Bit
Mode
B0
B1
G0
G1
R0
R1
B2
B3
B4
B5
G2
G3
G4
G5
R3
R4
R5
S2
S1
F2
-11-
Notes
S2 used for external 18+18
S1 used for external 18+18
VT8601 Apollo ProMedia
2
C signaling.
System Overview