AN2584 Freescale Semiconductor / Motorola, AN2584 Datasheet - Page 6

• Manufacturer Part Number: AN2584
• Description: Migrating from the MPC852T to the MPC875
• Manufacturer: Freescale Semiconductor / Motorola

Freescale Semiconductor, Inc.
Similarities and Differences between MPC852T and MPC875
Similarities and Differences between MPC852T and MPC875
Figure 4 shows the MPC852T pinout.
Figure 4. MPC852T Pinout
5.2 Memory Map
The memory maps for both the MPC852T and the MPC875 are very similar except that on the MPC875
SCC1 is replaced with a USB 1.1 controller and Port E registers reside in a previously reserved area of the
Port B registers.
On the MPC852T, the registers mapped for the FEC are now mapped for FEC1, with direct compatibility.
On the MPC875, the registers for FEC2 are located in a formerly reserved area of the internal memory map,
and begin at address 1E00. For ease of porting, FEC2 registers are located in the same order as FEC1, with
offset for FEC2 equal to FEC1 plus 0x1000.
Dual-port RAM for both processors is from IMMR + 0x2000-0x2FFF, with expanded dual-port RAM from
0x3000-0x3BFF.
6
Migrating from the MPC852T to the MPC875
MOTOROLA
For More Information On This Product,
Go to: www.freescale.com