MC68MH360VR33L Freescale Semiconductor, MC68MH360VR33L Datasheet - Page 90

• Manufacturer Part Number: MC68MH360VR33L
• Description: IC MPU QUICC 33MHZ 357-PBGA
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360VR33L

• Processor Type: M683xx 32-Bit
• Speed: 33MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 357-PBGA
• Family Name: M68000
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 33MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 357
• Package Type: BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Compliant

Freescale Semiconductor, Inc.
5.3.4 MC68MH360 Configured for QMC and Ethernet
Certain difficulties may arise when QMC and Ethernet are used together.
In a 25-MHz system, Ethernet can work together with 16 QMC channels. In this case, a
careful use of logical channels can free a 1-Kbyte space in the parameter area for up to 128
buffer descriptors. For more information, see Section 5.3.2, “Parameter RAM Usage for
QMC over Several SCCs.”
For 32-channel QMC operation coupled with Ethernet, a 33-MHz part is required. In
addition, Ethernet must operate on SCC1, and the QMC protocol must be divided over
SCC3 and SCC4 to use the combined FIFO size. This leaves SCC4’s parameter RAM page
unused as the largest single open space for the SCC1 Ethernet, resulting in 24 buffer
descriptors for transmission and reception in a single block. See Chapter 2, “QMC Memory
Organization,” for more information.
QMC Supplement
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