Rainbow Electronics LM96000 - Manual (Page 13)

Functional Description
(Continued)
Current Duty Value (Decimal) Value (Hex)
0.3922% 1 01h
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25.098% 64 40h
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50.196% 128 80h
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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 6 5 4 3 2 1 0 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
LM96000
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