Datasheet

LTC3883/LTC3883-1
36
3883fa
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*DATA FORMAT
L11 Linear_5s_11s PMBus data field b[15:0]
Value = Y • 2
N
where N = b[15:11] is a 5-bit two’s complement integer and Y = b[10:0] is an 11-bit
two’s complement integer
Example:
For b[15:0] = 0x9807 = ‘b10011_000_0000_0111
V
alue = 7 • 2
–13
= 854 • 10
–6
From “PMBus Spec Part II: Paragraph 7.1”
L16 Linear_16u PMBus data field b[15:0]
Value = Y • 2
N
where Y = b[15:0] is an unsigned integer and N = Vout_mode_parameter is a 5-bit two’s
complement exponent that is hardwired to –12 decimal
Example:
For b[15:0] = 0x9807 = ‘b1001_1000_0000_0000
V
alue = 19456 • 2
–12
= 4.75
From “PMBus Spec Part II: Paragraph 8.2”
Reg Register PMBus data field b[15:0] or b[7:0].
Bit field meaning is defined in detailed PMBus Command Description.
I16 Integer Word PMBus data field b[15:0]
Value = Y
where Y = b[15:0] is a 16 bit unsigned integer
Example:
For b[15:0] = 0x9807 = ‘b1001_1000_0000_0111
V
alue = 38919 (decimal)
CF Custom Format
Value is defined in detailed PMBus Command Description.
This is often an unsigned or two’s complement integer scaled by an MFR specific
constant.
ASC
ASCII Format A variable length string of text characters conforming to ISO/IEC 8859-1 standard.
PMBus COMMAND SUMMARY