Freescale Semiconductor TWR-MEM User manual

TOWER SYSTEMQuick Start Guide for TWR-MEM
TWR-MEM
Memory Module

TOWER SYSTEM
TWR-MEM
Freescale Tower System
The TWR-MEM module is part of the Freescale Tower System,
a modular development platform that enables rapid prototyping and tool
re-use through reconfigurable hardware. Take your design to the next
level and begin constructing your Tower System today.
Get to know the TWR-MEM
MRAM
CPLD
Primary
Connector
SD Card
Connector
(underside)
Compact
Flash Socket
Secondary
Connector

TOWER SYSTEM
How to build your Tower
STEP
3
Locate the Elevator modules,
identifiable by the four card
edge connectors on each.
Identify each Elevator
module as either “Functional”
or “Dummy” (written on
the outward facing
side of the board).
Locate the other modules you
will use in your Tower System.
Identify the “primary” and
“secondary” card edges for
each module (written along
the edge).
Plug the “primary” card edge
of each module into the
“functional” elevator.
Place the remaining “dummy”
or “functional” Elevator module
onto the “secondary” card
edges.
STEP
1
STEP
2
STEP
4
STEP
5
STEP
6

TOWER SYSTEM
Jumper Option Setting Description
J1 CPLD GCLK3 Selection *1-2* Connect GCLK3 to Tower CLKOUT1 (B25)
2-3 Connect GCLK3 to Tower CLKOUT0 (A64)
J2 SD Card SPI Mode
Select Pull Option
1-2 Pull-up on SD Card DAT3/SS signal (SPI Mode Select)
2-3 Pull-down on SD Card DAT3/SS signal (SPI Mode Select)
*OFF* No pull resistor applied
J3 SD Card SPI Mode
Chip-Select
*1-2* Connect SD Card DAT3/SS signal to SPI1_CS0 (B9)
2-3 Connect SD Card DAT3/SS signal to SPI1_CS1 (B8)
J4 Serial Flash
Configuration Options
*1-2* Connect Serial Flash Chip-Select to Tower SPI
Chip-Select
2-3 Enable Serial Flash Write Protect
5-6 Connect Serial Flash HOLD signal to Tower GPIO5 (B52)
J6 JTAG/GPIO Connections 1-2 Connect GPIO8 (A10) to CPLD JTAG TMS signal
3-4 Connect GPIO9 (A9) to CPLD JTAG TDO signal
5-6 Connect GPIO1 (B21) to CPLD JTAG TDI signal
7-8 Connect GPIO3 (B23) to CPLD JTAG TCK signal
J10 MRAM Chip-Select
Isolation
*ON* Connect Flexbus CS0 to MRAM Chip-Select
OFF Disconnect Flexbus CS0 from MRAM Chip-Select
J11 CPLD Flexbus CS0
Isolation
*ON* Connect Flexbus CS0 to CPLD pin 48
OFF Disconnect Flexbus CS0 from CPLD
TWR-MEM Jumper Options
The following is a list of all the jumper options. The *default* installed jumper settings are shown in bold
with asterisks.

TOWER SYSTEMQuick Start Guide for TWR-MCF5225X
Jumper Option Setting Description
J12 SD Card Configuration
Options
*1-2* Connect SD Card Detect to IRQH (B55)
3-4 Connect SD Card Detect to IRQA (B62)
5-6 Connect SD_D[1] to GPIO2 (B22)
7-8 Connect SD_D[2] to GPIO8 (A10)
9-10 Apply pull-up to SD_CMD/MOSI
11-12 Apply pull-up to SD_D[0]/MISO
J13 SD Card Write Protect
Detect Isolation
*ON* Connect SD Card Write Protect Detection to Tower
GPIO7 (A11)
OFF Disconnect SD Card Write Protect Detection from Tower
J14 Serial Flash Chip-Select *1-2* Connect Serial Flash Chip-Select to SPI0_CS0 (B46)
2-3 Connect Serial Flash Chip-Select to SPI0_CS1 (B47)
J15 MRAM Write Protect *ON* Normal MRAM operation (R/W)
OFF Write protect MRAM
J16 CPLD Chip-Select
Selection
*1-2* Use Flexbus CS0 as CPLD chip-select (pin 50)
2-3 Use Flexbus CS1 as CPLD chip-select (pin 50)
TOWER SYSTEMQuick Start Guide for TWR-MEM

TOWER SYSTEM
TWR-MEM Features
1 MB Serial Flash•
512 KB MRAM•
SD Card Slot for Memory Expansion or SDIO Modules•
Programmable CPLD•
Compact Flash Interface (via CPLD)•

TOWER SYSTEMQuick Start Guide for TWR-MEM

TOWER SYSTEMTOWER SYSTEM
Freescale and the Freescale logo are trademarks or registered
trademarks of Freescale Semiconductor, Inc. in the U.S. and other
countries. All other product or service names are the property of
their respective owners. © Freescale Semiconductor, Inc. 2010.
Doc Number: TWRMEMQSG / REV 0
Agile Number: 926-78425 / REV A
To learn more about the TWR-MEM and other modules within the Tower
System, go to www.freescale.com/tower. To become a member of the
online Tower Geeks community, go to www.towergeeks.org.