EMC1702 datasheet(46/57 Pages) SMSC

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High-Side Current-Sense and Dual 1°C Temperature Monitor

Datasheet

Revision 1.2 (09-27-10)

SMSC EMC1702

DATASHEET

Bits 1 - 0 - CS_RNG[1:0] - Determines the Current Sense maximum expected voltage (full scale range)

as shown in Table 5.32.

5.21

Peak Detection Configuration Register

The Peak Detection Configuration register controls the threshold and durations used by the Peak

Detection circuitry. At all times, the Peak Detection threshold and duration are set by the values written

into this register. The resistors on the TH_SEL and DUR_SEL pins are used to determine the initial

values of this register and will not be retained if the value is over written by the user.

These values may be updated at any time via the SMBus.

Bits 7-4 - PEAK_DET_TH[3:0] - Determines the Peak Detector Threshold level as shown in Table 5.34.

Table 5.31 Total Sampling Times

SAMPLING TIME

AVERAGING SELECTION

82ms

164ms

328ms

655ms

164ms

328ms

655ms

1310ms

328ms

655ms

1310ms

2620ms

Table 5.32 Current Sensing Range (Full Scale Range) Settings

CS_RNG[1:0]

CURRENT SENSOR RANGE

10mV

20mV

40mV

80mV (default)

Table 5.33 Peak Detection Configuration Register

ADDR

R/W

DEFAULT

52h

R/W

Peak

Detection

Config

PEAK_DET_TH[3:0]

PEAK_DET_DUR[3:0]

00h

EMC1702 Datasheet(PDF) 46 Page - SMSC Corporation

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