Datasheet

Signal Description
R
30 Datasheet
Signal Name Type Description
HREQ[4:0]# I/O
AGTL+
Host Request Command: Defines the attributes of the request.
HREQ[4:0]# are transferred at 2X rate. Asserted by the requesting agent
during both halves of the Request Phase. In the first half the signals define
the transaction type to a level of detail that is sufficient to begin a snoop
request. In the second half the signals carry additional information to
define the complete transaction type.
The transactions supported by the GMCH/MCH Host Bridge are defined in
the Host Interface section of this document.
HTRDY# O
AGTL+
Host Target Ready: Indicates that the target of the processor transaction
is able to enter the data transfer phase.
RS[2:0]# O
AGTL+
Response Status: Indicates the type of response according to the
following the table:
RS[2:0]#
Response type
000 Idle state
001 Retry response
010 Deferred response
011 Reserved (not driven by GMCH/MCH)
100 Hard Failure (not driven by GMCH/MCH)
101 No data response
110 Implicit Write back
111 Normal data response