Datasheet

Line-Coupling Interface
C2000 MCU
SPI
LPF
AFE030
LPF
SPI
PA
DAC PGA
PGA
PGA
SPI SPI
LPF
LPF
Line-Coupling Interface
C2000 MCU
Device
PA
DAC PGA
PGA
PGA
AFE030
www.ti.com SBOS588A –DECEMBER 2011– REVISED DECEMBER 2011
CALIBRATION MODES
The AFE030 can be configured for three different calibration modes: Tx Calibration, Rx Calibration, and Tx PGA
Calibration. Calibration values can be determined during the calibration process and stored in system memory. A
one-time calibration can be performed the first time that the system powers on; this calibration remains valid over
the full temperature range and operating life of the AFE030, independent of the number of power-on/power-off
cycles, as long as the calibration factors remain in the system memory. Calibration mode is accessed through the
Control1 Register. Note that calibration is not required.
Tx Calibration Mode
The Tx PGA + Tx Filter ac gain can be calibrated in Tx Calibration Mode. Figure 46 shows the signal path during
Tx Calibration mode.
Figure 46. Tx Calibration Mode Configuration
Rx Calibration Mode
The Tx PGA + Rx PGA1 + Rx Filter + Rx PGA2 ac gain can be calibrated in Rx Calibration mode. Figure 47
shows the signal path during Rx Calibration mode.
Figure 47. Rx Calibration Mode Configuration
Copyright © 2011, Texas Instruments Incorporated 43
Product Folder Link(s): AFE030