UCS1003-1 Datasheet, PDF (78/138 Pages) Microchip Technology – USB Port Power Controller with Charger Emulation

UCS1003-1/2/3
10.4.4
ATTACH DETECTION
CONFIGURATION RESISTER
The contents of this register are retained in Sleep.
REGISTER 10-11: ATTACH DETECTION CONFIGURATION REGISTER (ADDRESS 18h)
R/W-0
bit 7
R/W-1
R/W-0
RESERVED
R/W-0
R/W-0
R/W-1
DISCHG_TIME_SEL<1:0>
R/W-1
R/W-0
ATT_TH<1:0>⁽¹⁾
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-4
bit 3-2
bit 1-0
Note 1:
Reserved: Do not change
DISCHG_TIME_SEL<1:0>: t_DISCHARGE Time Setting bits
00 = 100 ms
01 = 200 ms
10 = 300 ms
11 = 400 ms
ATT_TH<1:0>: Attach/Removal Detection Threshold bits⁽¹⁾
Determines the Attach Detection threshold (I_{DET_QUAL}) and Removal Detection thresholds
(I_{REM_QUAL_DET} and I_{REM_QUAL_ACT}) as shown below.
00 = 200 µA Attach, 100 µA Removal Threshold
01 = 400 µA Attach, 300 µA Removal Threshold
10 = 800 µA Attach, 700 µA Removal Threshold
11 = 1000 µA Attach, 900 µA Removal Threshold
The Removal Threshold is different when operating in the Active power state versus when operating in the
Detect power state.
DS20005346B-page 78
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