AN2584 Freescale Semiconductor / Motorola, AN2584 Datasheet - Page 2

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

Feature Comparison
Feature Comparison
2 Feature Comparison
The MPC852T and MPC875 communications microprocessors incorporate many types of communications
engines to accommodate different system requirements. The following sections discuss hardware and
protocol features of both microprocessors.
2.1 Hardware Features
Table 1 compares 852T and the 875 hardware features.
2.2 Protocol Features
Table 2 compares 852T and the 875 protocol features.
3 The MPC875
The MPC875 PowerQUICC is a 0.18-micron version of the MPC860 PowerQUICC family of
communications microprocessors. Like the MPC852T, the MPC875 has a core voltage of 1.8 V and an I/O
voltage of 3.3 V, with 5V-input compatibility. The MPC875 supports a maximum core speed of 120 MHz
and a maximum external bus speed of 80 MHz (in 1:1 mode).
2
Core frequency (max)
Bus frequency (max)
I and D cache
FEC
Security
USB1.1
Time slot assigner (TSA)
SPI
SMC
SCC
PCMCIA
10/100 Fast Ethernet
10BT Ethernet
HDLC/SDLC
UART
Transparent
Freescale Semiconductor, Inc.
Migrating from the MPC852T to the MPC875
For More Information On This Product,
Protocol
Table 1. Hardware Features Comparison
Table 2. Protocol Feature Comparison
Feature
Go to: www.freescale.com
MPC852T
Yes
Yes
Yes
Yes
1
100 MHz
66 MHz
852T
Yes
4K
No
No
No
1
1
1
2
MPC875
120 MHz
Yes
Yes
Yes
Yes
80 MHz
2
875
Yes
Yes
Yes
Yes
8K
2
1
1
1
MOTOROLA