Arm
®
CoreLink™ GFC-200 Generic Flash Controller
Technical Reference Manual
Document ID: 101484_0000_01_en
Issue: 01
Signal Descriptions
Signal name
Direction Description
config_mode_me_en
Input
MASS ERASE enable in configuration mode.
When HIGH, the primary domain can initiate a MASS ERASE operation, when the GFC-200 is in
configuration mode. The mass erase occurs irrespective of the
partition_ctrl_rw
and
partition_ctrl_ro
settings.
Related information
Partition configuration interface
on page 25
A.7 Q-Channel interface signals
The Q-Channel device interfaces provide clock and power control signals for the GFC-200. The
clk_*
signals connect to a clock controller and the
pwr_*
signals connect to a power controller.
The following table lists the signals for both Q-Channel device interfaces. See the
AMBA
®
Low
Power Interface Specification, Arm
®
Q‑Channel and P‑Channel Interfaces
for more information about
Q-Channels.
Table A-8: Clock control Q-Channel device interface signals
Signal
Direction Description
clk_qreqn
Input
This signal indicates when the clock controller issues a quiescence entry or exit request to the GFC-200.
The input contains a 2-stage synchronizer, so the signal can transition asynchronously.
clk_qacceptn
This signal indicates when the GFC-200 accepts the quiescence request.
clk_qdeny
This signal indicates when the GFC-200 denies the quiescence request.
clk_qactive
Output
This signal indicates when the GFC-200 is active or it is requesting to exit from quiescence.
Table A-9: Power control Q-Channel device interface signals
Signal
Direction Description
pwr_qreqn
Input
This signal indicates when the power controller issues a quiescence entry or exit request to the GFC-200.
The input contains a 2-stage synchronizer, so the signal can transition asynchronously.
pwr_qacceptn
This signal indicates when the GFC-200 accepts the quiescence request.
pwr_qdeny
This signal indicates when the GFC-200 denies the quiescence request.
pwr_qactive
Output
This signal indicates when the GFC-200 is active or it is requesting to exit from quiescence.
Related information
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