SPMC/DPMC-122 G
ETTING
S
TARTED
M
ANUAL
D
Y
4 S
YSTEMS
I
NC
.
2-4
812628 V
ERSION
1 O
CTOBER
2003
B
OOT
F
LASH
W
RITE
P
ROTECT
J
UMPER
The SCP/DCP-122 provides a jumper to allow programming of the main boot Flash.
Normally, the E1-2 jumper is not installed and the boot Flash is write-protected. To program
the boot Flash, install the E1-E2 jumper.
F
IGURE
2.2: Boot Flash Write Protect Jumper
T
ABLE
2.2: Boot Flash Write Protect Jumper
Option
Jumper Setting
Main Boot Flash is write-protected.
Disable Main Boot Flash write-protect.
Open E1-E2 (normal mode). In this mode, the
WP_BOOT_BIT (described further in “E2PROM General
Control Register” in Chapter 3 of the SCP/DCP-122 Hard-
ware User’s Manual) is Read Only.
Connect E1-E2. In this mode, application software can
change the WP_BOOT_BIT to write protect or not
(described further in “E2PROM General Control Register” in
Chapter 3 of the SCP/DCP-122 Hardware User’s Manual).
E5
E7
E9
E11
E13
E6
E8
E10
E12
E14
E3
E4
E1
E2
Cross Reference
The state of the E1-E2 jumper is shown in the WR_PROT_BOOT_JMP bit in the FPGA
Miscellaneous Signal Status Register. See Chapter 3 of the SCP/DCP-122 Hardware User’s
Manual for more information about the Miscellaneous Signal Status Register.
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