Datasheet
ADAS1000-3/ADAS1000-4 Data Sheet
Rev. A | Page 66 of 76
Table 48. Operating State Register (OPSTAT) Address 0x1F, Reset Value = 0x000000
1
R
/W
Default Bit Name Function
R 0 [23:4] Reserved Reserved.
R 0 3 Internal error Internal digital failure. This is set if an error is detected in the digital core.
R 0 2 Configuration status
This bit is set after a reset indicating that the configuration has not been read yet.
Once the configuration is set, this bit is ready.
0 = ready.
1 = busy.
R
0
1
PLL lock
PLL lock lost. This bit is set if the internal PLL loses lock after it is enabled and
locked. This bit is cleared once this register is read or the PWREN bit (Address
0x01[1]) is cleared.
0 = PLL locked.
1 = PLL lost lock.
R 0 0 PLL locked status This bit indicates the current state of the PLL locked status.
0 = PLL not locked.
1 = PLL locked.
1
This register is not part of framing data, but can be read by issuing a register read command of this address. This register assists support efforts giving insight into
potential areas of malfunction within a failing device.
Table 49. User Gain Calibration Registers (CALxx) Address 0x21 to Address 0x23, Reset Value = 0x000000
R
/W
Default Bit Name Function
[31:24] Address [7:0] 0x21: calibration LA.
0x22: calibration LL.
0x23: calibration RA.
R/W 0 23 USRCAL
User can choose between default calibration values or user calibration values for GAIN 0,
GAIN 1, GAIN 2.
Note that for GAIN 3, there is no factory calibration.
0 = default calibration values (factory calibration).
1 = user calibration values.
R/W 0 [22:12] Reserved Reserved, set to 0.
R/W 0 [11:0] CALVALUE Gain calibration value.
Result = data × (1 + gain × 2
−17
).
The value read from this register is the current gain calibration value. If the USRCAL bit is set
to 0, this register returns the default value for the current gain setting.
0x7FF (+2047) = ×1.00000011111111111b.
0x001 (+1) = ×1.00000000000000001b.
0x000 (0) = ×1.00000000000000000b.
0xFFF (−1) = ×0.11111111111111111b.
0x800 (−2048) = ×0.11111100000000000b.