AN2757 Freescale Semiconductor / Motorola, AN2757 Datasheet - Page 33

• Manufacturer Part Number: AN2757
• Description: MPC5200 Quick Start
• Manufacturer: Freescale Semiconductor / Motorola

6.6.13
In addition to Programmable Serial Controller modules, there is also one dedicated Serial Peripheral Interface (SPI) on the
MPC5200. The SPI interface uses at most four pins which must be properly configured by both the GPIO port multiplexer and
the SPI module itself. In addition to the GPIO port settings, each pin of the SPI should also be configured for input or output
directly in the SPI module.
The GCT displays all four SPI pins together with their operation assigned by the SPI. In the case of any conflict (some SPI
operation modes require pins to be in certain mode), a red warning message is displayed together with a hint of how to fix the
problem (e.g. set pin as output).
6.6.14
There are two Motorola Scalable CAN (msCAN) interfaces on the MPC5200, compatible with a standard Controller Area Network
2A/B protocol.
The GCT can help especially with setting communication speed and bit timing parameters of the CAN interface. The user is able
to specify a desired communication speed directly in bits-per-second units. Pressing the “Calculate parameters...” button builds
a list of all timing parameter combinations suitable for the requested speed. All important time-quanta portions and sampling
points are also drawn on a time-graph which is displayed together with the numeric parameter values.
Freescale Semiconductor
Serial Peripheral Interface (SPI)
Motorola Scalable CAN Controller (MSCAN)
AN2757 MPC5200 Quick Start and Graphical Configuration Tool
Figure 33. Serial Peripheral Interface Control Page (SPI)
Graphical Configuration Tool
33