MC68MH360EM25L Freescale Semiconductor, MC68MH360EM25L Datasheet - Page 173

• 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: -

The first column is the value passed to the subroutine, the second column is the value
expected by the table instruction, and the third column is the result returned by the subrou-
tine.
The following value has been calculated for independent variable X:
Since X is an 8-bit value, the upper four bits are used as a table offset, and the lower four
bits are used as an interpolation fraction. The following results are obtained from the sub-
routine:
Thus, Y is calculated as follows:
Y = 80
If the 8-bit value for X were used directly by the table instruction, interpolation would be in-
correctly performed between entries 0 and 1. Data must be shifted to the left four places be-
fore use:
LSL.W #4, Dx
MOTOROLA
31
Table Entry Offset
Interpolation Fraction
(13 (64 – 80)) / 16 = 67
NOT USED
Table 5-15. T8-Bit Independent Variable Entries
Freescale Semiconductor, Inc.
Dx [4:7] = $B = 11
For More Information On This Product,
(Subroutine)
Dx [0:3] = $D = 13
10
11
12
13
14
15
16
X
0
1
2
3
4
5
6
7
8
9
MC68360 USER’S MANUAL
Go to: www.freescale.com
(Instruction)
16
1024
1280
1536
1792
2048
2304
2560
2816
3072
3328
3584
3840
4096
256
512
768
X
0
15
0
0
0
0
112
128
112
0
16
32
48
64
80
96
96
80
64
48
32
16
Y
0
0
0
0
0
1
0
1
1
1
1
CPU32+
0
5-31
0
1