Motorola PowerQUICC II MPC8280 Series Reference Manual page 594

Dual-Port RAM
0X0000
Bank #1
BD / DATA
2K
0X0800
Bank #2
BD / DATA
2K
0X1000
Bank #3
BD / DATA
2K
0X1800
Bank #4
BD / DATA
2K
0Xs00
Bank #5
BD / DATA
2K
0X2800
Bank #6
BD / DATA
2K
0X3000
Bank #7
BD / DATA
2K
0X3800
Bank #8
BD / DATA
2K
Figure 14-8. Internal Data RAM Memory Map
The internal data RAM data bus is 64-bits wide. The RAM is used for six possible tasks:
• To store parameters associated with the FCCs, SCCs, SMCs, SPI, I
IDMAs in the 2,048-byte parameter RAM
• To store the BDs that describe where data is to be received and transmitted from
• To store data from the serial channels (optional because data can also be stored
externally in the system memory)
• Temporary storage between FCC FIFO and external memory for FCC data that is
moved by BTM (from/to FCC FIFO) and SDMA (to/from external memory)
14-20
Freescale Semiconductor, Inc.
0X4000
Reserved
MPC8280 PowerQUICC II Family Reference Manual
For More Information On This Product,
Go to: www.freescale.com
0X8000
Bank #9
Parameter RAM
2K
0X8800
Bank #10
Parameter RAM
2K
(Partly reserved
for future serials)
0X9000
Bank #11
BD / DATA
2K
0X9800
Bank #12
BD / DATA
2K
0XA000
Bank #13
BD / DATA
2K
0XA800
Bank #14
BD / DATA
2K
0XB000
Bank #15
BD / DATA
2K
0XB800
Bank #16
BD / DATA
2K
0XC000
Reserved
2 C, USB, and
MOTOROLA