MC68MH360ZP25VL Freescale Semiconductor, MC68MH360ZP25VL Datasheet - Page 85

• Manufacturer Part Number: MC68MH360ZP25VL
• Description: IC MPU QUICC ETHER 25MHZ 357PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360ZP25VL

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 357-PBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

If the QMC operates with a full 64 channels, no space is left in the lower 4-Kbyte area. In
this case, the only free areas are in the RAM pages, each 256-bytes large. Depending on the
functions, channels and protocols used, some areas remain free for buffer descriptors. Also,
if a particular function is not enabled, its parameter RAM area may also be used.
If fewer than 64 logical channels are used or if physical channels are concatenated to super
channels, space is freed in the dual-ported RAM. Each unused logical channel creates a 64-
byte hole in the dual-ported RAM. This area is free for buffer descriptors for any SCC.
QMC channels can also use this space instead of external memory for buffer descriptors,
reducing the load on the external bus.
Figure 5-11 shows the internal memory map for the MPC860MH. Figure 5-12 to
Figure 5-15 show a more detailed memory map for each SCC, showing the parameter RAM
usage for different functions.
Table 5-4 shows the functions available for various protocols on each SCC for the
MPC860MH.
Figure 5-12 to Figure 5-15 show that not all the functions available on each SCC can be
used simultaneously due to overlaps of the register locations stored in the parameter RAM.
SCC1 Yes
SCC2 Yes
SCC3 Yes
SCC4 Yes
• RAM page one is dedicated to SCC1, I
• RAM page two is dedicated for SCC2, SPI, IDMA2 and RISC timers
• RAM page three is dedicated for SCC3, SMC1 and DSP1 operations.
• RAM page four is dedicated for SCC4, SMC2 and DSP2 operations.
No
No
No
No
Available?
Function
Misc, I
IDMA1
SPI, Timer,
IDMA2
SMC1, DSP1
SMC2, DSP2
Transparent
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 5-4. MPC860MH Functions Available
2
C,
Misc, I
IDMA1
SPI, Timer,
IDMA2
SMC1, DSP1
SMC2, DSP2
Go to: www.freescale.com
Chapter 5. Buffer Descriptors
HDLC
2
C,
Misc, I
IDMA1
SPI, Timer,
IDMA2
SMC1, DSP1
SMC2, DSP2
UART
2
C, IDMA1 and for miscellaneous storage.
2
C,
Misc, IDMA1
I
Timer, IDMA2 Timer, IDMA2 Timer, IDMA2
SPI
DSP1
SMC1
DSP2
SMC2
2
C
Ethernet
Misc, IDMA1
I
SPI
DSP1
SMC1
DSP2
SMC2
2
C
QMC
Misc, IDMA1
I
SPI
DSP1
SMC1
DSP2
SMC2
Shared QMC
2
C