Arm
®
CoreLink™ GFC-200 Generic Flash Controller
Technical Reference Manual
Document ID: 101484_0000_01_en
Issue: 01
Signal Descriptions
Signal name
Direction Description
pwdata_s1[31:0]
Input
32-bit write data bus.
pwakeup_s1
Input
The APB bridge sets this signal HIGH when a transfer is in progress on the secondary APB interface, APB 1.
prdata_s1[31:0]
Output
32-bit read data bus.
Reset value =
0x0
.
pready_s1
Output
Reset value =
0b0
.
pslverr_s1
Output
Reset value =
0b0
.
APB signals that are not shown in the tables are not used in GFC-200. See the
AMBA
®
APB Protocol Specification Version 2.0
for more information.
Related information
Primary APB completer interface
Secondary APB completer interface
on page 21
A.4 APB requester interface signals
The APB requester interface connects to the process-specific part, and enables the GFC-200 to
access the registers in the process-specific part.
The following table shows the signals that are used by the APB requester interface.
Table A-5: APB requester interface signals
Signal name
Direction Description
psel_m
Output
Process-specific part select signal.
penable_m
Output
Indicates the start of the second cycle of an APB transfer.
paddr_m[11:0]
Output
Address bus.
pstrb_m[3:0]
Output
Write strobe port. Each bit refers to a byte in the
pwdata_m
signal.
pwrite_m
Output
APB transfer direction.
pwdata_m[31:0]
Output
32-bit write data bus.
prdata_m[31:0]
Input
32-bit read data bus.
pready_m
Input
Driven LOW when extra wait states are required to complete access to the external registers.
pslverr_m
Input
Driven HIGH when an error response is received from an access to the external registers.
APB signals that are not shown in the table are not used in GFC-200. See the
AMBA
®
APB Protocol Specification Version 2.0
for more information.
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