ADAU1966 AD [Analog Devices], ADAU1966 Datasheet - Page 20

• Manufacturer Part Number: ADAU1966
• Description: 16-Channel High Performance
• Manufacturer: AD [Analog Devices]

ADAU1966
TEMPERATURE SENSOR
The ADAU1966 has an on-board temperature sensor that allows
the user to read the temperature of the silicon inside the part.
The temperature sensor readout has a range of −60°C to +140°C
in 1°C steps. The PDN_THRMSENS_CTRL_1 register controls
the settings of the sensor. The temperature sensor is powered on
by default and can be shut off by setting the TS_PDN[2] bit to
b1 in PDN_THRMSENS_CTRL_1. The temperature sensor can
be run in either continuous operation or one-shot mode. The
temperature sensor conversion mode is modified using Bit 5,
THRM_MODE; the default is THRM_MODE = 1, one-shot
mode. In one-shot mode, writing a 0 followed by writing a 1 to
Bit 4, THRM_GO, results in a single reset and temperature
SDATA
SDATA
SDATA
SDATA
LRCLK
LRCLK
LRCLK
LRCLK
BCLK
BCLK
BCLK
BCLK
MSB
MSB
MSB
RIGHT-JUSTIFIED MODE—SELECT NUMBER OF BITS PER CHANNEL: SAI = 0, SDATA_FMT = 2 OR 3
MSB
LEFT-JUSTIFIED MODE—16 BITS TO 24 BITS PER CHANNEL: SAI = 0, SDATA_FMT = 1
LEFT CHANNEL
LEFT CHANNEL
LEFT CHANNEL
I
2
S-JUSTIFIED MODE—16 BITS TO 24 BITS PER CHANNEL: SAI = 0, SDATA_FMT = 0
TDM MODE—16 BITS TO 24 BITS PER CHANNEL: SAI = 1, 2, 3, OR 4
LSB
LSB
LSB
Figure 15. Serial Audio Modes
Rev. 0 | Page 20 of 52
LSB
1/
f
S
MSB
conversion, placing the resulting temperature data in the
THRM_TEMP_STAT register. In continuous operation
mode, the data conversion takes place at a rate set by Bits[7:6],
THRM_RATE, with a range of 0.5 sec to 4 sec between samples.
Faster rates are possible using the one-shot mode.
Once a temperature conversion has been placed in the
THRM_TEMP_STAT register, the data can be translated into
degrees Celsius (°C) using the following steps:
1.
2.
Convert the binary or hexadecimal data read from
THRM_TEMP_STAT into decimal form.
Subtract 60 from the converted THRM_TEMP_STAT
data; this is the temperature of the silicon in °C.
MSB
MSB
MSB
RIGHT CHANNEL
RIGHT CHANNEL
RIGHT CHANNEL
LSB
LSB
LSB
LSB