8050
8050
D N/B Maintenance
D N/B Maintenance
81
Hub Interface Signals
Signal Name
Type
Description
HL[10:0]
I/O
Hub
Packet Data:
Data signals used for HI read and write operations.
HLSTB
I/O
Hub
Packet Strobe:
One of two differential strobe signals used to transmit
or receive packet data over HI.
HLSTB#
I/O
Hub
Packet Strobe Complemen
t: One of two differential strobe signals
used to transmit or receive packet data over HI.
Dedicated LVDS LCD Flat Panel Interface Signal Descriptions
Name Type Voltage
Description
ICLKAP
O
LVDS
1.25 V± 225 mV
Channel A differential clock pair output (true):
245-800 MHz
ICLKAM
O
LVDS
1.25 V±225 mV
Channel A differential clock pair output
(compliment):
245-800 MHz.
IYAP[3:0]
O
LVDS
1.25 V±225 mV
Channel A differential data pair 3:0 output (true):
245-800MHz.
IYAM[3:0]
O
LVDS
1.25 V±225 mV
Channel A differential data pair 3:0 output
(compliment):
245-800 MHz.
ICLKBP
O
LVDS
1.25 V±225 mV
Channel B differential clock pair output (true):
245-800 MHz.
ICLKBM
O
LVDS
1.25 V±225 mV
Channel B differential clock pair output
(compliment):
245-800 MHz.
IYBP[3:0]
O
LVDS
1.25 V±225 mV
Channel B differential data pair 3:0 output (true):
245-800MHz.
IYBM[3:0]
O
LVDS
1.25 V± 225 mV
Channel B differential data pair 3:0 output
(compliment):
245-800 MHz.
Digital Video Output B (DVOB) Port Signal Descriptions
Name Type
Description
DVOBD[11:0]
O
DVO
DVOB Data:
This data bus is used to drive 12-bit RGB data on each
edge of the differential clock signals, DVOBCLK and DVOBCLK#.
This provides 24-bits of data per clock period. In dual channel mode,
this provides the lower 12-bits of pixel data.
DVOBD[11:0] should be left as left as NC (“Not Connected”) if not
used.
DVOBHSYNC
O
DVO
Horizontal Syn
c: HSYNC signal for the DVOB interface.
DVOBHSYNC
should be left as left as NC (“Not Connected”) if not
used.
DVOBVSYNC
O
DVO
Vertical Syn
c: VSYNC signal for the DVOB interface.
DVOBVSYNC should be left as left as NC (“Not Connected”) if the
signal is NOT used when using internal graphics device.
DVOBBLANK#
O
DVO
Flicker Blank or Border Period Indication: DVOBBLANK# is
a
programmable output pin driven by the GMCH.
When programmed as a blank period indication, this pin indicates
active pixels excluding the border. When programmed as a border
period indication, this pin indicates active pixel including the border
pixels.
DVOBBLANK# should be left as left as NC (“Not Connected”) if not
used.
DVOBFLDSTL
I
DVO
TV Field and Flat Panel Stall Signa
l. This input can be
programmed to be either a TV Field input from the TV encoder or
Stall input from the flat panel.
DVOB TV Field Signal: When used as a Field input, it synchronizes
the overlay field with the TV encoder field when the overlay is
displaying an interleaved source.
DVOB Flat Panel Stall Signal: When used as the Stall input, it
indicates that the pixel pipeline should stall one horizontal line. The
signal changes during horizontal blanking. The panel fitting logic,
when expanding the image vertically, uses this.
DVOBFLDSTL needs to be pulled down if not used.
5.2 Intel 855GM/GME North Bridge(7)
MiTac Secret
Confidential Document
