Current Duty

Value (Decimal)

Value (Hex)

0.3922%

1

01h

.

.

.

.

.

.

.

.

.

25.098%

64

40h

.

.

.

.

.

.

.

.

.

50.196%

128

80h

.

.

.

.

.

.

.

.

.

100%

255

FFh

4.5 Register 3Eh: Company ID

Register

Address

Read/

Write

Register

Name

Bit 7

(MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

Default

Value

3Eh

R

Company ID

7

6543210

01h

The company ID register contains the company identification number. For National Semiconductor this is 01h. This number is

assigned by Intel and is a method for uniquely identifying the part manufacturer. This register is read only — a write to this

register has no effect.

4.6 Register 3Fh: Version/Stepping

Register

Address

Read/

Write

Register

Name

Bit 7

(MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

Default

Value

3Fh

R

Version/Stepping

VER3

VER2

VER1

VER0

STP3

STP2

STP1

STP0

68h

The four least significant bits of the Version/Stepping register [3.0] contain the current stepping of the LM96000 silicon. The four

most significant bits [7.4] reflect the LM96000 base device number when set to a value of 0110b. For the LM96000, this register

will read 01101000b (68h). Bit 3 of the stepping field is set to indicate that the LM96000 is a super-set of the LM85 family of

products.

The register is used by application software to identify which device in the hardware monitor family of ASICs has been

implemented in the given system. Based on this information, software can determine which registers to read from and write to.

Further, application software may use the current stepping to implement work-arounds for bugs found in a specific silicon

stepping.

This register is read only — a write to this register has no effect.

4.7 Register 40h: Ready/Lock/Start/Override

Register

Address

Read/

Write

Register

Name

Bit 7

(MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

Default

Value

40h

R/W

Ready/Lock/Start/Override

RES

RES

RES

RES

OVRID

READY

LOCK

START

00h

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