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| 82870P2P64H2 Datasheet, PDF (149/217 Pages) – | |||
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Functional Description
R
Table 46. Hot Plug Mode Signals
Signal
Type
Multiplexed With
Bus A
Bus B
Signal
Type
Multiplexed With
Bus A
Bus B
HXSWITCHA
I
PAIRQ15
PBIRQ15
HXSWITCHB
I
HXFAULTA#
I
PAIRQ14
PBIRQ14
HXFAULTB#
I
HXPRSNT2A#
I
PAIRQ13
PBIRQ13
HXPRSNT2B#
I
HXPRSNT1A#
I
PAIRQ12
PBIRQ12
HXPRSNT1B#
I
HXM66ENA
I
PAIRQ11
PBIRQ11
HXM66ENB
I
HXPCIXCAP1A
I
HPA_SLOT21
HPB_SLOT21
HXPCIXCAP1B
I
HXPCIXCAP2A
I
HPA_SLOT11
HPB_SLOT11
HXPCIXCAP2B
I
HXRESETA#
O
PAGNT53
PBGNT53
HXRESETB#
O
HXGNLEDA
O
HPA_SOC3
HPB_SOC3
HXGNLEDB
O
HXAMLEDA
O
HPA_SOL3
HPB_SOL3
HXAMLEDB
O
HXBUSENA#
O
HPA_SORR#3
HPB_SORR#3
HXBUSENB#
O
HXCLKENA#
O
HPA_SIL#3
HPB_SIL#3
HXCLKENB#
O
HXPWRENA
O
HPA_SOD3
HPB_SOD3
HXPWRENB
O
PAIRQ10
PAIRQ9
PAIRQ8
PAREQ5
PAREQ4
PAREQ3
HPA_SLOT01
HPA_SOR#3
HPA_SIC3
HPA_SID2
PAGNT43
PAGNT33
HPA_SOLR3
PBIRQ10
PBIRQ9
PBIRQ8
PBREQ5
PBREQ4
PBREQ3
HPB_SLOT01
HPB_SOR#3
HPB_SIC3
HPB_SID2
PBGNT43
PBGNT33
HPB_SOLR3
NOTES:
1. HPx_SLOT[N] are pull-ups/pull-downs. When in two slot parallel mode, the external logic that decodes
the three-state value of PCIXCAP from the card must actively drive these signals to either logic 1 or
logic 0 to overcome the value of the pull-up/pull-down, must be tri-stated during reset and while the card
is not connected to avoid damaging the slot count value.
2. HPx_SID must be pulled down on the system board when configuring the P64H2 for 2-slot mode so that
the LED for slot B on busses A and B will remain off during reset.
3. The P64H2 must drive the following signals to the following states in case the system is set up for 2-slot
mode so that LEDs are in the appropriate state (off) and the Q-switches remain disconnected. Note that
the placement of the signals should be such that the value driven by the P64H2 in 2-slot mode is the
same value it would have driven if in serial mode.
Table 47. Hot Plug Mode Reset Values
Signals
PxGNT[5::3]
HPx_SOC
HPx_SIC
HPx_SOL
HPx_SOLR
HPx_SOD
HPx_SORR#
HPx_SOR#
HPx_SIL#
Reset Value
011
0
0
0
0
0
1
0
1
Intel® 82870P2 P64H2 Datasheet
149
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