82845PE Datasheet, PDF (28/176 Pages) Intel Corporation – 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH)

Signal Description
2.4.4 AGP Strobes
Signal Name
GADSTB_0
GADSTB_0#
GADSTB_1
GADSTB_1#
GSBSTB
GSBSTB#
Type
I/O (s/t/s)
AGP
I/O (s/t/s)
AGP
I/O (s/t/s)
AGP
I/O (s/t/s)
AGP
I
AGP
I
AGP
Description
GAD Bus Strobe-0: This signal provides timing for 2X and 4X clocked data on
GAD_[15:0] and GC/BE_[1:0]#. The agent that is providing data drives this
signal.
GAD Bus Strobe-0 Complement: GADSTB_0# is the differential complement to
the GAD_STB_0 signal. It is used to provide timing for 4X clocked data.
GAD Bus Strobe-1: This signal provides timing for 2X and 4X clocked data on
GAD_[31:16] and GC/BE_[3:2]#. The agent that is providing data drives this
signal.
GAD Bus Strobe-1 Complement: GADSTB_1# is the differential complement to
the GADSTB_1 signal. It is used to provide timing for 4X clocked data.
Sideband Strobe: This signal provides timing for 2X and 4X clocked data on the
GSBA[7:0] bus. It is driven by the AGP master after the system has been
configured for 2X or 4X clocked sideband address delivery.
Sideband Strobe Complement: GSBSTB# is the differential complement to the
GSBSTB signal. It is used to provide timing for 4X clocked data.
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Intel^® 82845GE/82845PE Datasheet