Descriptions and Drawings
13/60
NXHX 51-ETM | Development Board
DOC120606HW05EN | Revision 5 | English | 2013-10 | Released | Public
© Hilscher, 2012 - 2013
2.3.2.2
Configuration Host Mode - Switch (S2)
The host mode is evaluated by the Second Stage Bootloader during boot.
The Second Stage Bootloader uses this setting to initialize the selected
Dual-Port Memory Mode in the host interface.
Note:
The S2 Switch was altered in the
hardware revision 4
of the NXHX
board. Please note the different settings relating to hardware revisions
≤
3
and 4 shown in the tables below.
Hardware Revisions 1 – 3:
S2
1
2
Function
ON
ON
OFF
Serial Dual-Port Memory Mode (SPI Slave
Mode 3)
OFF
ON
Parallel Dual-Port Memory Mode
16 bit mode
OFF
OFF
Parallel Dual-Port Memory Mode
8 bit mode
Table 9: Configuration - Switch S2, Host Mode (valid for Hardware Revisions 1 – 3)
Since Hardware Revision 4:
S2
1
2
Function
ON
ON
OFF
Serial Dual-Port Memory Mode (SPI Slave
Mode 3)
OFF
ON
Parallel Dual-Port Memory Mode
8 bit mode
OFF
OFF
Parallel Dual-Port Memory Mode
16 bit mode
Table 10: Configuration - Switch S2, Host Mode (valid since Hardware Revision 4)
Position
in
Figure 2: NXHX51-ETM Printed Circuit Board
on page 8.
2.3.2.3
MMIO General Input - Switch (S30)
These four signals can be used by the user software.
S30
SW
Signal
Connected to
Description
1
MMIO36
with 1.5 k
Ω
to +3.3 V
2
MMIO37
with 1.5 k
Ω
to +3.3 V
3
MMIO38
with 1.5 k
Ω
to +3.3 V
4
MMIO39
with 1.5 k
Ω
to +3.3 V
ON = Pull-up connected
OFF = No Pull-up connected
Table 11: DIL-Switch S30
Position
in
