Package, Pinning, Pad Cells
25/56
netX 50 to netX 51/52 | Migration Guide
DOC120109MG05EN | Revision 5 | English | 2013-08 | Released | Public
2012-2013
3.3.1.3
Memory Interface
Ball Pos
Signal
Pad Type
MUX-Func1
netX
netX
netX
netX
50/51
52
50
51/52
50
51/52
50
51/52
P12 T14
MEM_A18
O6
IOD6
QSPI_SIO2
R13 V15
MEM_A19
O6
IOD6
QSPI_SIO3
J14 -
MEM_A22
O6
IOD6
MEM_A18
J15 -
MEM_A23
O6
IOD6
MEM_A19
All Memory Signals without
MEMDR_CLK and
MEM_D0-32
O6 IOD6
Table 11: Differences in Pinning and Pad Cells – Memory Interface
All Memory Signals without the SDRAM Clock and the Data lines can be used as inputs with a
default value of zero because internal pull down resistors. This allows reading in at start time a
configuration value which is defined by external pull up resistors at the other memory signals.
Two additional lines are needed to run the SPI controller in Quad SPI mode. Normally the memory
signals MEM_A18 and MEM_A19 are not used by SDRAM.
An internal multiplex can be activated to change these address lines into the SIO2 and SIO3
signals for the Quad SPI mode and the MEM_A18 and MEM_A19 functionality moves to the
highest address lines.