Document No. 002-14949 Rev. *E
Page 48 of 113
PRELIMINARY
CYW43353
shows the WLAN boot-up sequence from power-up to firmware download.
x0004
Interrupt register
0
R/W
0
Requested data not available; Cleared by writing a 1 to this
location
1
R
0
F2/F3 FIFO underflow due to last read
2
R
0
F2/F3 FIFO overflow due to last write
5
R
0
F2 packet available
6
R
0
F3 packet available
7
R
0
F1 overflow due to last write
x0005
Interrupt register
5
R
0
F1 Interrupt
6
R
0
F2 Interrupt
7
R
0
F3 Interrupt
x0006–
x0007
Interrupt enable register
15:
0
R/W/U
16'hE0E7
Particular Interrupt is enabled if a corresponding bit is set
x0008–
x000B
Status register
31:
0
R
32'h0000
Same as status bit definitions
x000C–
x000D
F1 info register
0
R
1
F1 enabled
1
R
0
F1 ready for data transfer
13:
2
R/U
12'h40
F1 max packet size
x000E–
x000F
F2 info register
0
R/U
1
F2 enabled
1
R
0
F2 ready for data transfer
15:
2
R/U
14'h800
F2 max packet size
x0010–
x0011
F3 info register
0
R/U
1
F3 enabled
1
R
0
F3 ready for data transfer
15:
2
R/U
14'h800
F3 max packet size
x0014–
x0017
Test–Read only register
31:
0
R
32'hFEED
BEAD
This register contains a predefined pattern, which the host can
read and determine if the gSPI interface is working properly.
x0018–
x001B
Test–R/W register
31:
0
R/W/U
32'h00000
000
This is a dummy register where the host can write some pattern
and read it back to determine if the gSPI interface is working
properly.
Table 14. gSPI Registers (Cont.)
Address
Register
Bit Access
Default
Description