MC68MH360EM25L Freescale Semiconductor, MC68MH360EM25L Datasheet - Page 174

• Manufacturer Part Number: MC68MH360EM25L
• Description: IC MPU QUICC ETHER 25MHZ 240FQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360EM25L

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

CPU32+
The new range for X is 0 X 4096; however, since a left shift fills the least significant digits
of the word with zeros, the interpolation fraction can only have one of 16 values.
After the shift operation, Dx contains the following value:
Execution of the table instruction using the new value in Dx yields:
Table Entry Offset
Interpolation Fraction
Thus, Y is calculated as follows:
Y = 80
5.3.4.4 TABLE EXAMPLE 4: MAINTAINING PRECISION. In this example, three TBL
operations are performed and the results are summed. The calculation is done once with
the result of each TBL rounded before addition and once with only the final result rounded.
Assume that the result of the three interpolations are as follows (a ".'' indicates the binary
radix point).
First, the results of each TBL are rounded with the TBLS round-to-nearest-even algorithm.
The following values would be returned by TBLS:
Summing, the following result is obtained:
Now, using the same TBL results, the sum is first calculated and then rounded according to
the same algorithm:
5-32
31
(208 (64 – 80)) / 256 = 67
NOT USED
Dx [8:15] = $0B = 11
Dx [0:7] = $D0 = 208
Freescale Semiconductor, Inc.
TBL # 1
TBL# 2
TBL # 3
For More Information On This Product,
TBL # 1
TBL # 2
TBL # 3
MC68360 USER’S MANUAL
Go to: www.freescale.com
0010 0000 .
0011 1111 .
0000 0001 .
0110 0000 .
16
0010 0000 . 0111 0000
0011 1111 . 0111 0000
0000 0001 . 0111 0000
0010 0000 .
0011 1111 .
0000 0001 .
15
0
0
0
0
1
0
1
1
1
1
0
1
MOTOROLA
0
0
0
0
0