EMC1702 datasheet(33/57 Pages) SMSC

Part #	EMC1702

Description	High-Side Current-Sense and Dual 1째C Temperature Monitor

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Manufacturer	SMSC [SMSC Corporation]

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

Datasheet

SMSC EMC1702

33

Revision 1.2 (09-27-10)

DATASHEET

As shown in Table 5.2, temperature data is stored as an 11-bit value with the high byte representing

the integer value and the low byte representing the fractional value left justified to occupy the MSBits.

5.4

Status Register

The Status Register reports general error conditions. To identify specific channels, refer to

Section 5.10, Section 5.15, Section 5.16, and Section 5.17. The individual Status Register bits are

cleared when the appropriate High Limit, Low Limit, or Crit Limit status register has been read or

cleared.

01h

R

External Diode

1 High Byte

Sign

64

32

16

8

4

2

1

00h

3Ah

10h

R

External Diode

1 Low Byte

0.5

0.25

0.125

-

00h

3Bh

Table 5.3 Temperature Data Format

TEMPERATURE (°C)

BINARY

HEX (AS READ BY REGISTERS)

Diode Fault

1000_0000_000b

80_00h

-63.875

1100_0000_001b

C0_20h

-63

1100_0001_000b

C1_00h

-1

1111_1111_000b

FF_00h

-0.125

1111_1111_111b

FF_E0h

0

0000_0000_000b

00_00h

0.125

0000_0000_001b

00_20h

1

0000_0001_000b

01_00h

63

0011_1111_000b

3F_00h

64

0100_0000_000b

40_00h

65

0100_0001_000b

41_00h

127

0111_1111_000b

7F_00h

127.875

0111_1111_111b

7F_E0h

Table 5.4 Status Register

ADDR

R/W

REGISTER

B7

B6

B5

B4

B3

B2

B1

B0

DEFAULT

02h

R

Status

BUSY

PEAK

-

HIGH

LOW

FAULT

CRIT

-

00h

34h

Table 5.2 Temperature Data Registers (continued)

ADDR

R/W

REGISTER

B7

B6

B5

B4

B3

B2

B1

B0

DEFAULT

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