MC68MH360AI25L Freescale Semiconductor, MC68MH360AI25L Datasheet - Page 74

• Manufacturer Part Number: MC68MH360AI25L
• Description: IC MPU QUICC 25MHZ 240-FQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360AI25L

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 240-FQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

In the bottom case, two more bits are received. The frame length is now 13 bytes, and the
address positions X13 through X15 point to invalid data. Address position X12 contains
information about the non-octet alignment. Valid information is written starting at the MSB
position, shown as ‘x’ in the diagram. Starting from the LSB position, zeros are filled in
followed by a ‘1’ immediately preceding the valid data.
The two diagrams on the right show how the data and the extra information is stored for a
frame length that is not a multiple of 4 bytes. The additional information is always on a
long-word boundary. In the top case the frame length is 10 bytes and in the bottom case the
length is 11 bytes.
For a minimum frame consisting of ‘flag, 1 bit, flag’ the frame length is 1. The only valid
entry is at address XX0 with content of x1000000.
To accommodate the extra long word that may be written at the end of a frame, it is
recommended to reserve MRBLR + 4 bytes for each buffer area.
ADDRESS XX0
ADDRESS XX4
ADDRESS XX8
ADDRESS X12
ADDRESS XX0
ADDRESS XX4
ADDRESS XX8
ADDRESS X12
X
X
XTRA
1
1
5
9
1
5
9
Freescale Semiconductor, Inc.
For More Information On This Product,
—
2
6
10
2
6
10
0
0
Figure 5-2. Nonoctet Alignment Data
—
3
7
11
3
7
11
0
0
Go to: www.freescale.com
—
4
8
12
4
8
12
0
0
QMC Supplement
0
ADDRESS XX0
ADDRESS XX4
ADDRESS XX8
ADDRESS X12
ADDRESS XX0
ADDRESS XX4
ADDRESS XX8
ADDRESS X12
0
X
X
XTRA
1
5
9
1
5
9
1
—
2
6
10
2
6
10
0
0
—
3
7
3
7
0
0
—
4
8
4
8
0
0
0
0