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UCS81003 Datasheet(PDF) 76 Page - Microchip Technology

Part # UCS81003
Description  Automotive USB Port Power Controller with Charger Emulation
PDF  108 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

UCS81003 Datasheet(HTML) 76 Page - Microchip Technology

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UCS81003
DS20005334A-page 76
 2014 Microchip Technology Inc.
REGISTER 10-33: PRELOADED EMULATION STIMULUS 3 CONFIGURATION 2 REGISTER
(ADDRESS 3AH)
R-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
S3_R3MAG<3:0>
S3_R3<3:0>
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-4
S3_R3MAG<3:0>: Determines the magnitude of the response to the stimulus. The bit decode changes
meaning based on which response was selected. Data written to any field that is identified as “Do not use”
will not be accepted. The data will not be updated and the settings will remain set at the previous value.
• For S3_R3 settings 0000 - 0011, the response is a voltage applied on DPOUT/DMOUT pins. The
S3_R3MAG bits specify the voltage relative to ground:
• For S3_R3 settings 0100, 0111, 1101 - 1111, the response is a resistor connected on
DPOUT/DMOUT to GND or VBUS. The S3_R3MAG bits specify the resistor value:
• For S3_R3 settings 0110, 1001, 1100, the response is a voltage divider applied from VBUS to
GND with “center” at DPOUT/DMOUT. The S3_R3MAG bits specify the minimum resistance of the
voltage divider (Sum of R1 + R2):
0000
= Pull Down
0110
=600 mV
1100
= 1800 mV
0001
= 400 mV
0111
=700 mV
1101
= 2000 mV
0010
= 400 mV
1000
=800 mV
1110
= 2200 mV
0011
= 400 mV
1001
=900 mV
1111
= Do not use
0100
= 400 mV
1010
=1400 mV
0101
= 500 mV
1011
=1600 mV
0000
=1.8 k
0110
=40 k
1100
= 100 k
0001
=10 k
0111
=43 k
1101
= 120 k
0010
=15 k
1000
=50 k
1110
= 150 k
0011
=20 k
1001
=60 k
1111
= Do not use
0100
=25 k
1010
=75 k
0101
=30 k
1011
=80 k
0000
=93 k
0110
=200 k
1100
= 200 k
0001
= 100 k
0111
=200 k
1101
= 200 k
0010
= 125 k
1000
=93 k
1110
= 200 k
0011
= 150 k
1001
=100 k
1111
= Do not use
0100
= 200 k
1010
=125 k
0101
= 200 k
1011
=150 k



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