EMC6D103 datasheet(82/92 Pages) SMSC

82 / 92 page

Fan Control Device with High Frequency PWM Support and Hardware Monitoring Features

Datasheet

Revision 0.3 (03-01-07)

SMSC EMC6D103

DATASHEET

8.2.37

Registers 8Ch: SMSC Test Register

8.2.38

Registers 8Dh: SMSC Test Register

This register becomes read only when the Lock bit is set. Any further attempts to write to this register

shall have no effect.

This register must not be written. Writing this register may produce unexpected results.

8.2.39

Registers 8Eh: SMSC Test Register

This register is an SMSC Test register.

8.2.40

Registers 90h-93h: TachX Option Registers

These registers become read only when the Lock bit is set. Any further attempts to write to these

registers shall have no effect.

Bit[0] SLOW

0=Force tach reading register to FFFEh if number of tach edges detected is greater than 0, but less

than programmed number of edges.(default)

1= Force tach reading register to FFFFh if number of tach edges detected is greater than 0, but less

than programmed number of edges.

Table 8.58 Registers 8Ch: SMSC Test Register

Address

Read/

Write

Bit 7

(MSb)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSb)

Default

Value

8Ch

SMSC Test Register

RES

TST4

TST3

TST2

TST1

TST0

0Eh

Table 8.59 Registers 8Dh: SMSC Test Register

Address

Read/

Write

Bit 7

(MSb)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSb)

Default

Value

8Dh

R/W

SMSC Test Register

RES

TST4

TST3

TST2

TST1

TST0

0Eh

Table 8.60 Registers 8Eh: SMSC Test Register

Address

Read

/Write

Bit 7

(MSb)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSb)

Default

Value

8Eh

SMSC Test Register

TST7

TST6

TST5

TST4

TST3

TST2

TST1

TST0

N/A

Table 8.61 Registers 90h-93h: TachX Option Registers

Address

Read/

Write

Bit 7

(MSb)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSb)

Default

Value

90h

R/W

Tach1 Option

STCH2

STCH1

STCH0

3EDG

MODE

EDG1

EDG0

SLOW

CCh

91h

R/W

Tach2 Option

STCH2

STCH1

STCH0

3EDG

MODE

EDG1

EDG0

SLOW

CCh

92h

R/W

Tach3 Option

STCH2

STCH1

STCH0

3EDG

MODE

EDG1

EDG0

SLOW

CCh

93h

R/W

Tach4 Option

STCH2

STCH1

STCH0

3EDG

MODE

EDG1

EDG0

SLOW

CCh

EMC6D103 Datasheet(PDF) 82 Page - SMSC Corporation

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