LMP90100MHE National Semiconductor, LMP90100MHE Datasheet - Page 41

• Manufacturer Part Number: LMP90100MHE
• Description: AFE, SENSOR, 28TSSOP
• Manufacturer: National Semiconductor

Specifications of LMP90100MHE

• Brief Features: 24bit Low Power Sigma Delta ADC, Automatic Channel Sequencer
• Supply Voltage Range: 2.7V To 5.5V
• Operating Temperature Range: -40°C To +105°C
• Digital Ic Case Style: TSSOP
• No. Of Pins: 28
• Base: RoHS Compliant
• Ic Function: Multi-Channel, Low Power 24-bit Sensor AFE
• Rohs Compliant: Yes

17.5.2 Controlled Streaming Example
This example shows how to read the 24-bit conversion data (ADC_DOUT) four times using the Controlled Streaming mode. The
ADC_DOUT registers consist of ADC_DOUTH at ADDR 0x1A, ADC_DOUTM at ADDR 0x1B, and ADC_DOUTL at ADDR 0x1C.
The first step
(Figure
31) sets up the SPI_STREAMCN register. This step enters the Controlled Streaming mode by setting
STRM_TYPE high in ADDR 0x03. Since three registers (ADDR 0x1A - 0x1C) need to be read, the STRM_RANGE is 2.
30139593
FIGURE 31. Setting up SPI_STREAMCN
The next step shows how to perform the Controlled Streaming mode so that the master device will read ADC_DOUT from ADDR
0x1A, 0x1B, 0x1C, then wrap back to ADDR 0x1A, and repeat this process for four times. After this process, deassert CSB to end
the Controlled Streaming mode.
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