Enhanced Queued Analog-to-Digital Converter (eQADC)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
31-30
Freescale Semiconductor
Preliminary
31.3.4.4
ADC0 Gain Calibration Constant Register (ADC0_GCCR)
The ADC0_GCCR contains the gain calibration constant used to fine-tune the ADC0 conversion results.
Refer to
Section 31.4.5.4, “ADC Calibration Feature
,” for details about the calibration scheme used in the
eQADC.
Offset: 0x0003
Access: Read/Write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
TBC_VALUE
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 31-17. ADC Time Base Counter Register (ADC_TBCR)
Table 31-23. ADC_TBCR Field Descriptions
Field
Description
TBC_
VALUE
Time Base Counter VALUE. Contains the current value of the time base counter. Reading TBC_VALUE returns the
current value of time base counter. Writes to TBC_VALUE register load the written data to the counter. The time base
counter counts from 0x0000 to 0xFFFF and wraps when reaching 0xFFFF.
Offset: 0x0004
Access: Read/Write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
GCC0
W
Reset
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
W
Reset
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 31-18. ADC0 Gain Calibration Constant Register (ADC0_GCCR)
Table 31-24. ADC0_GCCR Field Descriptions
Field
Description
bit 0
Reserved.
GCCn
ADC0 Gain Calibration Constant. Contains the gain calibration constant used to fine-tune ADC0 conversion results.
It is a unsigned 15-bit fixed pointed value. The gain calibration constant is an unsigned fixed point number expressed
in the GCC_INT.GCC_FRAC binary format. The integer part of the gain constant (GCC_INT) contains a single binary
digit while its fractional part (GCC_FRAC) contains 14 digits. For details about the GCC data format refer to
Section 31.4.5.4.2, “MAC Unit and Operand Data Format
.”