User's Manual l MBLX2160A UM 0101 l © 2022, TQ-Systems GmbH
Page 14
3.1.5
NOR flash swap
The TQMLX2160A allows an easy toggle of the two XSPI NOR Flash devices. Only the chip select of both devices are swapped, so
that from the view of the CPU no differences appear. This is controlled by the signal NOR_SWAP#. The signal has a pullup to 3.3V
on the TQMLX2160A. Alternatively a software configuration via I²C slave register is provided.
Table 8:
NOR flash swap configuration
NOR_SWAP# (X2-A36)
I
2
C slave register
NOR flash multiplexing
Low
–
X mapping
High
–
1:1 mapping
Low
1:1 mapping set
1:1 mapping
High
1:1 mapping set
1:1 mapping
Low
X mapping set
X mapping
High
X mapping set
X mapping
The current setting of the NOR_SWAP# pins is shown on the status display in the "Settings"
"DIP S1" menu.
