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AUX – Sensor Controller Registers

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17.8.8.5 ISRC Register (Offset = 4h) [reset = X]

ISRC is shown in Figure 17-74 and described in Table 17-99.

Current Source Strength and trim control for current source

Figure 17-74. ISRC Register

7 6 5 4 3 2 1 0

TRIM RESERVED EN

R/W-X R/W-X R/W-X

Table 17-99. ISRC Register Field Descriptions

Bit Field Type Reset Description

7-2 TRIM R/W X

Adjust current from current source. Output currents may be

combined to get desired total current.

0h = No current connected

1h = 0P25U : 0.25 uA

2h = 0P5U : 0.5 uA

4h = 1P0U : 1.0 uA

8h = 2P0U : 2.0 uA

10h = 4P5U : 4.5 uA

20h = 11P75U : 11.75 uA

1 RESERVED R/W X

Software should not rely on the value of a reserved. Writing any

other value than the reset value may result in undefined behavior.

0 EN R/W X

Current source enable

1304

AUX – Sensor Controller with Digital and Analog Peripherals SWCU117A–February 2015–Revised March 2015

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