TWR-P1025 Freescale Semiconductor, TWR-P1025 Datasheet - Page 19

• Manufacturer Part Number: TWR-P1025
• Description: Development Boards & Kits - Other Processors TOWER MODULE P1025
• Manufacturer: Freescale Semiconductor

Specifications of TWR-P1025

• Rohs: yes
• Product: Development Platforms
• Tool Is For Evaluation Of: P1025
• Core: PowerPC e500
• Interface Type: I2C, UART, USB 2.0
• Operating Supply Voltage: 5 V
• For Use With: Freescale Tower System

Hardware Description
hub. Port2 is routed to the miniPCIe connector with Ports 3 & 4 routed to a dual USB type B connector
(J5). Both ports 3 & 4 can provide 5V@500mA to peripheral USB devices.
3.9
A micro Secure Digital (SD) card slot is available on the TWR-P1025 connected to the SD Host Controller
(SDHC) signals of the P1025. Refer to Table 13 "I/O Connectors and Pin Usage Table" for the SDHC
signal connection details.
3.10
The P1025 local bus interface is used for the NOR flash and elevator Local bus expansion. The local bus
is routed to the CPLD where the LAD lines are demultiplexed.
A Spansion SP29GL512S Flash providing 64Mbytes of memory is used on the P1025 Tower Module to
provide code storage for boot and application code. Some of the connections are direct between the
P1025's GPCM controlled memory controller and the Flash device. However the data bus is multiplexed
with the address bus, therefore a latch/mux is required. Typically this would be implemented in a separate
logic device, though the board contains a CPLD that has all these signals routed to it. The latch/mux logic
is implemented in the CPLD. The CPLD also drives reset to the Flash device at power up. The interconnect
between the devices is illustrated in
Additionally a subset of the local bus is routed from the CPLD to the primary elevator. This subset is
intended to be used as interface to the TWR-LCD panel.
3.11
The two P1025 UARTs are routed to the FDTI dual USB to RS232 convertor. The UART is typically used
as a terminal on a remote host to provide input and output from the devices operating system, for example,
u-boot/Linux.
8
Micro Secure Digital Card Slot (micro SDHC)
Local Bus Interface
UART
Figure 3-4. NOR Local Bus Connection
TWR-P1025 Hardware User Guide, Rev. 2
Figure
3-4.
Freescale Semiconductor