Grant State - Intel Quark SoC X1000 Core Developer's Manual

Table 58.
9.6.3 Write-Back Enhanced Intel
During Stop Grant State
During the Stop Grant state, most output signals of the processor maintain their
previous condition, which is the level they held when entering the Stop Grant state. The
data bus and data parity signals also maintain their previous state. In response to
HOLD being driven active during the Stop Grant state when the CLK input is running,
the Write-Back Enhanced Intel
states all output and input/output signals that are three-stated during the HOLD/HLDA
state. After HOLD is de-asserted, all signals return to the state they were in prior to the
HOLD/HLDA sequence.
All inputs should be driven to the power supply rails to ensure the lowest possible
current consumption during the Stop Grant or Stop Clock states (see
Table 59.
®
Intel Quark SoC X1000 Core
Developer's Manual
176
Pin State during Stop Grant Bus State (Sheet 2 of 2)
Signal
DP[3:0]
W/R#, D/C#, M/IO#
ADS#
LOCK#, PLOCK#
BREQ
HLDA
BLAST#
FERR#
PCD, PWT
PCHK#
PWT, PCD
SMIACT#
®
®
Quark SoC X1000 Core generates HLDA and three-
Write-Back Enhanced Intel
during Stop Grant Bus Cycle (Sheet 1 of 2)
Signal
A[3:2]
A[31:4]
D[31:0]
BE[3:0]#
DP[3:0]
W/R#, D/C#, M/IO#
ADS#
LOCK#, PLOCK#
BREQ
HLDA
Notes:
1. For the case of snoop cycles (via EADS#) during Stop Grant state, both HITM#
and CACHE# may go active depending on the snoop hit in the internal cache.
2. During Stop Grant state, AHOLD, HOLD, BOFF# and EADS# are serviced normally.
®
Intel Quark Core—Hardware Interface
Type
I/O
O
O
O
O
O
O
O
O
O
O
O
Quark SoC X1000 Core Pin States
®
Quark SoC X1000 Core Pin States
Type
O
I/O
I/O
O
I/O
O
O
O
O
O
State
Floated
Previous state
Inactive
Inactive
Previous state
As per HOLD
Previous state
Previous state
Previous state
Previous state
Previous state
Previous state
Table 59).
State
Previous state
Previous state
Previous state
Previous state
Previous state
Previous state
Inactive (high)
Inactive (high)
Previous state
As per HOLD
October 2013
Order Number: 329679-001US