MAX14578AEEWC+T ,USB Battery Charger DetectorsApplicationsresistor-divider networks on D+/D-.DSC and CamcorderThe MAX14578E/MAX14578AE are availa ..
MAX1457CWI ,0.1%-Accurate Signal Conditioner for Piezoresistive Sensor CompensationFeaturesThe MAX1457 is a highly integrated analog-sensor sig- ' High Accuracy (within ±0.1% of sens ..
MAX1458AAE ,1%-Accurate / Digitally Trimmed Sensor Signal Conditionerfeatures on the MAX1458 result in the integration of' Fully Analog Signal Paththree traditional sen ..
MAX1458CAE ,1%-Accurate / Digitally Trimmed Sensor Signal ConditionerApplicationsI.C. 3 14 INPPiezoresistive Pressure and AccelerationTEMP 4 MAX1458 13 BDRIVETransducer ..
MAX1459AAP ,2-Wire, 4-20mA Smart Signal ConditionerFeaturesThe MAX1459 highly integrated analog-sensor signal Highly Integrated Sensor Signal Conditi ..
MAX1459AAP+ ,2-Wire, 4-20mA Smart Signal ConditionerFeaturesThe MAX1459 highly integrated analog-sensor signal♦ Highly Integrated Sensor Signal Conditi ..
MAX4051ESE+T ,Low-Voltage, CMOS Analog Multiplexers/SwitchesApplications♦ Low Distortion: < 0.04% (600Ω)Battery-Operated Equipment♦ Low Crosstalk: < -90dB (50Ω ..
MAX4052ACEE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesGeneral Description ________
MAX4052ACEE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, T = T to T , unl ..
MAX4052ACEE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesGeneral Description ________
MAX4052ACEE+ ,Low-Voltage, CMOS Analog Multiplexers/SwitchesGeneral Description ________
MAX4052ACPE ,Low-Voltage / CMOS Analog Multiplexers/SwitchesMAX4051/A, MAX4052/A, MAX4053/A19-0463; Rev 0; 1/96Low-Voltage, CMOS AnalogMultiplexers/Switches___ ..
MAX14578AEEWC+T
USB Battery Charger Detectors
USB Battery Charger Detectors
MAX14578E/MAX14578AE
EVALUATION KIT AVAILABLE Ordering Information/Selector Guide
General Description
The MAX14578E/MAX14578AE are USB charger detec-
tors compliant with USB Battery Charging Revision 1.1.
The USB charger-detection circuitry detects USB stan-
dard downstream ports (SDPs), USB charging down-
stream ports (CDPs), or dedicated charger ports (DCPs),
and controlS an external lithium-ion (Li+) battery charger.
The devices implement USB Battery Charging Revision
1.1-compliant detection logic including data contact
detection, D+/D- short detection, charging downstream
port identification. The MAX14578AE features an enable
(EN) input and an LDO output.
In addition, the internal USB switch is compliant to
Hi-Speed USB, full-speed USB, and low-speed USB
signals. The devices feature low on-resistance, low
on-resistance flatness, and very low capacitance. The
devices also feature high-ESD protection up to Q15kV
Human Body Model on the CD+ and CD- pins.
In addition, the MAX14578E/MAX14578AE feature Apple
and Sony charger detection that allows identification of
resistor-divider networks on D+/D-.
The MAX14578E/MAX14578AE are available in 12-bump,
0.4mm pitch, 1.3mm x 1.68mm WLP and 16-pin TQFN
packages and operate over the -40NC to +85NC extended
temperature range.
Features
S Compliant to USB Battery Charging Revision 1.1
S Data Contact Detection for Foolproof Connector
Insertion Detection
S Charging Downstream Detection
S Apple/Sony Charger Detection
S Dedicated Charger Detection
S China YD/T1591-Compliant Charger Detection
S Internal Switches Isolate the USB Transceiver
During the Charger Detection Process
S VBUS Connection Capable of 28V
S Device Status Change Interrupt
S Low Supply Current
S High-ESD Protection on CD+ and CD-
±15kV Human Body Model
±8kV IEC 6100-4-2 Contact Discharge
Applications
DSC and Camcorder
Media Players
Cell Phones
e-Book Readers
Mobile Internet Devices (MIDs)
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed Pad
T = Tape and reel.
PARTI2CENLDOTEMP RANGEPIN-PACKAGETOP MARK
MAX14578EEWC+TYesNoNo-40NC to +85NC12 WLP+ABW
MAX14578AEEWC+TNoYesYes-40NC to +85NC12 WLP+ABX
MAX14578EETE+TYesNoNo-40NC to +85NC16 TQFNAJA
MAX14578AEETE+TNoYesYes-40NC to +85NC16 TQFNAJB
USB Battery Charger Detectors
MAX14578E/MAX14578AE
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
(All voltages referenced to GND.)
BAT, INT, SDA, SCL, CE0, CE1, CE2, EN .......... -0.3V to +6.0V
LOUT ...........................................-0.3V to (VB + 0.3V, 6V) (min)
VB ..........................................................................-0.3V to +30V
Switch Disabled or CP_ENA = 1 (Note 1)
CD+, CD- ........................................-2.1V to (VSWPOS + 0.3V)
TD+, TD- .........................................-0.3V to (VSWPOS + 0.3V)
Switch Enabled or CP_ENA = 0 (Note 2)
CD+, CD-, TD+, TD- .......................-0.3V to (VVCCINT + 0.3V)
Continuous Current into LOUT ..................................... ±150mA
Continuous Current into Any Other Terminal ..................±50mA
Continuous Power Dissipation (TA = +70NC)
WLP (derate 13.7mW/NC above +70NC) ................. 1096mWTQFN (derate 20.8mW/NC above +70NC) ............... 1667mW
Operating Temperature Range ........................ -40NC to +85NC
Junction Temperature .................................................. +150NC
Storage Temperature Range ......................... -65NC to +150NC
Soldering Temperature (reflow) ......................................+260NC
WLP
Junction-to-Ambient Thermal Resistance (BJA) ..........73°C/W
TQFN
Junction-to-Ambient Thermal Resistance (BJA) ..........48°C/W
Junction-to-Case Thermal Resistance (BJC) ...............10°C/W
ELECTRICAL CHARACTERISTICS
(VBAT = +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VBAT = +3.6V,
VB = +5.0V, TA = +25NC.) (Note 4)
ABSOLUTE MAXIMUM RATINGS
PACKAGE THERMAL CHARACTERISTICS (Note 3)
Note 1: VSWPOS = (VVCCINT or 3.3V) (min)
Note 2: VVCCINT = (VBAT, [(VB or 4.2V)(min)]) (max)
Note 3: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-lay-
er board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DC CHARACTERISTICS
Supply Voltage RangeVBAT2.85.5VVB3.528
Internal Positive Switch
Regulator VSWPOS3.253.43.6V
Internal Negative Switch
Regulator VSWNEG-2.06-1.90-1.76V
VBAT UVLO VBATUVLOVBAT = 4.2V, VB = 0V0.901.652.45V
VBUS UVLO VBUSUVLOVBAT = 0V, VB = 5.5V1.01.333.30V
USB Battery Charger Detectors
MAX14578E/MAX14578AE
ELECTRICAL CHARACTERISTICS (continued)
(VBAT = +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VBAT = +3.6V,
VB = +5.0V, TA = +25NC.) (Note 4)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
BAT Supply Current IBAT
MAX14578E
VBAT = +3.6V,
VB = 0V, CP_ENA = 0,
USBSWC = 02.5
VBAT = +4.2V,
VB = 0V, CP_ENA = 1,
USBSWC = 1,
VSDA = VSCL = 1.8V
MAX14578AE
VBAT = +3.6V,
VB < VVBRAW, VEN =
+3.6V2.5
VBAT = +4.2V,
VB = 0V, VEN = 0V1.330
Supply current increase
when VEN = 1.6V,
VBAT = +4.2V
VB Supply Current IVB
MAX14578E
VB = +5.5V,
CP_ENA = 0,
USBSWC = 0140FA
MAX14578AE
VB = +5.5V,
VEN = 0V190295FA
VB = +5.0V,
VEN = 0V4.1mA
VB = +5.5V,
VEN = +5.5V75125FA
LOUT (LDO OUT) (MAX14578AE ONLY)
LOUT Current Limit ILOUT95mA
LOUT Voltage VLOUTILOUT = 10mA, VB = 5.0V4.874.94VILOUT = 0mA, VB = 6.0V4.05.35.5
LOUT Debounce Time tLOUT_DEBVB = 5.0V to VLOUT = 4.5V20ms
LOUT Turn-On Time100Fs
Themal Shutdown+141NC
Themal Shutdown Hysteresis20NC
CHARGER DETECTION
VDP_SRC VoltageVDP_SRC0.50.7V
VDAT_REF VoltageVDAT_REF0.250.4V
VLGC VoltageVLGC0.82.0V
IDP_SRC CurrentIDP_SRC6.611FA
CD+ and CD- Sink CurrentICD+_SINK
ICD-_SINK50150FA
RCD ResistanceRCD200330500kI
USB Battery Charger Detectors
MAX14578E/MAX14578AE
ELECTRICAL CHARACTERISTICS (continued)
(VBAT = +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VBAT = +3.6V,
VB = +5.0V, TA = +25NC.) (Note 4)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
TD- Pulldown ResistorRTD-_DWN14.2524.8kI
Charger Detection Weak SinkIWEAK0.18FA
VBUS25 RatioVBUS25Reference ratio for special charger as a
percentage of VBUS voltage, VB = 5V242629%
VBUS47 RatioVBUS47Reference ratio for special charger as a
percentage of VBUS voltage, VB = 5V444750%
VBUS60 RatioVBUS6057.560.363.5%
DCD M TimetMDEBAll comparators203040ms
DCD C TimetCDEBAll comparators5ms
DCD Timer2s
Charger-Detect Source TimetDP_SRC_ONDCHK = 040msDCHK = 1625
Charger-Detect-Type
Detection TimetDP_RES_ON120ms
Charger-Detect Delay TimetDP_SRC_HICRNT4080ms
VB Attach to CE1 and CE2
Output TimetVBSW
From VB > VVBDET or CHG_TYP_M = 1
(DCHK = 0) to CE1 and/or CE2 change520From VB > VVBDET or CHG_TYP_M = 1
(DCHK = 1) to CE1 and/or CE2 change1450
VB Raw-Detect ThresholdVVBRAW1.72.63.5V
VB-Detect ThresholdVVBDET3.23.53.3V
VB-Detect Threshold
HysteresisVVBDET_HYS3850mV
USB ANALOG SWITCHES (CD-, CD+)
Analog-Signal RangeVDN2, VDP2CP_ENA = 0 (MAX14578E)0VVCCINTVCP_ENA = 1 VSWNEGVSWPOS
On- Resistance RONUSBVBAT = +3.0V, ICD+ = ICD- = 10mA,
VCD+, VCD- = 0 to +3.0V 3.36I
On -Resistance Match
Between Channels DRONUSBVBAT = +3.0V, ICD+ = ICD- = 10mA,
VCD+, VCD- = +400mV 0.5I
On -Resistance Flatness RFLATUSBVBAT = +3.0V, ICD+ = ICD- = 10mA,
VCD+, VCD- = 0 to +3.3V 0.060.26I
Off-Leakage Current ILUSB(OFF)
VBAT = 4.2V, switch open, VCD+ =
VCD- = +0.3V or +2.5V; VTD+ or VTD- =
+2.5V or +0.3V
-360+360nA
On-Leakage Current ILUSB(ON)VBAT = 4.2V, switch closed, VCD+ or
VCD- = +0.3V or +2.5V -360+360nA
DIGITAL SIGNALS (INT, SCL, SDA, EN, CE0, CE1, CE2)
Input Logic-High VIH1.4V
Input Leakage Current IINLEAK-1+1FA
USB Battery Charger Detectors
MAX14578E/MAX14578AE
Note 4: All units are 100% production tested at TA = +25NC. Limits over the operating temperature range are guaranteed by
design and not production tested.
Note 5: Guaranteed by design; not production tested.
ELECTRICAL CHARACTERISTICS (continued)
(VBAT = +2.8V to +5.5V, VB = +3.5V to +5.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VBAT = +3.6V,
VB = +5.0V, TA = +25NC.) (Note 4)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Open-Drain Low VODOLISINK = 1mA 0.4V
Output Logic-High VOHISOURCE = 1mA VIO -
0.2V
Output Logic-LowVOLISINK = 1mA 0.2V
DYNAMIC (Note 5)
Charge-Pump Delay Time tCPCP_ENA from 0 to 1 until switch on 1ms
Analog-Switch Turn-On Time tONMAX14578E, I2C STOP to switch on,
RL = 50I 0.11ms
Analog-Switch Turn-Off Time tOFFMAX14578E, I2C STOP to switch off,
RL = 50I 0.11ms
Break-Before-Make
Delay Time tBBMRL = 50I, TA = +25NC > 0Fs
Off-Capacitance COFF
TD-, TD+, applied voltage is 0.5VP-P,
DC bias = 0V, f = 240MHz; CD-, CD+
not connected to TD-, TD+pF
On-Capacitance CON
TD-, TD+, applied voltage is 0.5VP-P,
DC bias = 0V, f = 240MHz; CD-, CD+
connected to TD-, TD+; RL = 50I
4.5pF
-3dB BandwidthBWVCD_ = 0.5VP-P1000MHz
Off-Isolation VISORL = 50I, f = 20kHz, VCD_ = 0.5VP-P-60dB
I2C TIMING SPECIFICATIONS
I2C Max Clock fI2CCLK400kHz
Bus Free Time Between STOP
and START Conditions tBUF1.3Fs
START Condition Setup Time 0.6Fs
Repeat START Condition
Setup Time tSU:STA90% to 90% 0.6Fs
START Condition Hold Time tHD:STA10% of SDA to 90% of SCL 0.6Fs
STOP Condition Setup Time tSU:STO90% of SCL to 10% of SDA 0.6Fs
Clock Low Period tLOW10% to 10% 1.3Fs
Clock High Period tHIGH90% to 90% 0.6Fs
Data Valid to SCL Rise Time tSU:DATWrite setup time 100ns
Data Hold Time to SCL Fall tHD:DATWrite hold time 0ns
ESD PROTECTION
CD+, CD-Human Body Model ±15kVIEC 61000-4-2 Contact Discharge±8
USB Battery Charger Detectors
MAX14578E/MAX14578AE
Typical Operating Characteristics
(VBAT = +4.2V, VB = +5.0V, CBAT = 1FF, CVB = 1FF, unless otherwise noted.)
ANALOG-SWITCH EYE DIAGRAM
DIFFERENTIAL SIGNAL (V)
MAX14578E toc09LOUT LOAD REGULATION (MAX14578AE)
MAX14578E toc08
LOUT VOLTAGE (V)642
VB = 6VTA = +85°C
TA = +25°CTA = -40°C
LOUT VOLTAGE REGULATION (MAX14578AE)
MAX14578E toc07
LOUT VOLTAGE (V)
ILOUT = 1mATA = +85°C
TA = +25°CTA = -40°C
VB SUPPLY CURRENT
vs. SUPPLY VOLTAGE (MAX14578AE)
MAX14578E toc06
VB SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
VBAT = +3.6V, EN = HIGH
TA = +85°C
TA = +25°CTA = -40°C
VB SUPPLY CURRENT
vs. SUPPLY VOLTAGE (MAX14578E)
MAX14578E toc05
VB SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
VBAT = +3.6V, CP_ENA = 0, USBSWC = 0
TA = +85°C
TA = +25°C
TA = -40°C
BAT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX14578E toc04
BAT SUPPLY VOLTAGE (V)
BAT SUPPLY CURRENT (µA)
VB = 0V, CP_ENA = 0, USBSWC = 1
TA = +85°C
TA = +25°CTA = -40°C
BAT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX14578E toc03
BAT SUPPLY VOLTAGE (V)
BAT SUPPLY CURRENT (µA)
VB = 0V, CP_ENA = 1, USBSWC = 0
TA = +85°C
TA = +25°CTA = -40°C
BAT SUPPLY CURRENT INCREASE
vs. SUPPLY VOLTAGE
MAX14578E toc02
BAT SUPPLY VOLTAGE (V)
BAT SUPPLY CURRENT (µA)
TA = +85°C
TA = +25°C
VB = 0V, CP_ENA = 0, USBSWC = 0
VSDA = VSCL = 1.8V
TA = -40°C
BAT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX14578E toc01
BAT SUPPLY VOLTAGE (V)
BAT SUPPLY CURRENT (µA)
VB = 0V, CP_ENA = 0, USBSWC = 0
VSDA = VSCL = 0V
TA = +85°C
TA = +25°C
TA = -40°C
USB Battery Charger Detectors
MAX14578E/MAX14578AE
Typical Operating Characteristics (continued)
(VBAT = +4.2V, VB = +5.0V, CBAT = 1FF, CVB = 1FF, unless otherwise noted.)
CE_ vs. VBUS CONNECTION (MAX14578AE)
USB CHARGING DOWNSTREAM PORT
(VTD+ = 3V)
MAX14578E toc16
5V/div
VCD+
2V/div
VCE2
5V/div
VCE1
5V/div
CE_ vs. VBUS CONNECTION (MAX14578E)
APPLE 1A CHARGER, USB COMPLIANT
(USB_CPL = 1, USBSWC = 0, VTD+ = 3V)
MAX14578E toc15
5V/div
VCD+
2V/div
VCE2
5V/div
VCE1
5V/div
CE_ vs. VBUS CONNECTION (MAX14578E)
USB CHARGING DOWNSTREAM PORT, USB COMPLIANT
(USB_CPL = 1, USBSWC = 0, VTD+ = 3V)
MAX14578E toc14
40ms/div
5V/div
VCD+
0.5V/div
VCE2
5V/div
VCE1
5V/div
LOGIC-INPUT THRESHOLD
vs. SUPPLY VOLTAGE
MAX14578E toc13
BAT SUPPLY VOLTAGE (V)
LOGIC-INPUT THRESHOLD (V)
VIH
VIL
CD+/CD- LEAKAGE CURRENT
vs. TEMPERATURE
MAX14578E toc12
TEMPERATURE (°C)
CD+/CD- LEAKAGE CURRENT (nA)3510-15
OFF-LEAKAGE
ON-LEAKAGE
CD+/CD- FREQUENCY RESPONSE
MAX14578E toc11
FREQUENCY (MHz)
CD+/CD- FREQUENCY RESPONSE (dB)
0.0110,000
ON-LOSS
OFF-ISOLATION
CD+/CD- ON-RESISTANCE
vs. VCD_ VOLTAGE
MAX14578E toc10
VCD_ VOLTAGE (V)
CD+/CD- ON-RESISTANCE (
TA = +85°C
TA = +25°C
TA = -40°C
ICD_ = 10mA
USB Battery Charger Detectors
MAX14578E/MAX14578AE
Bump Configuration
Bump Description
TOP VIEW
(BUMP SIDE DOWN)
() MAX14578AE ONLY.
() MAX14578AE ONLY.
*CONNECT EP TO GND.
WLP13
CD+CD-VBINT
(LOUT)
GNDSCL
(EN)
SDA
(CE0)CE1
TD+TD-BATCE2
MAX14578E/MAX14578AE
N.C.CD+
TD+
N.C.(LOUT_SNS)INT(LOUT)CE2
SCL
(EN)109
TD-
N.C.
BAT
CD-
GND EP*
N.C.
CE1
SDA
(CEO)
TQFNMAX14578E
MAX14578AE
TOP VIEW
PIN
NAMEFUNCTIONMAX14578EMAX14578AE
TQFN-EPWLPTQFN-EPWLPC11C1TD+USB Transceiver D+ Connection
2, 3,
10, 16—2, 3, 16—N.C.No Connection. Not internally connected.A14A1CD+USB Connector D+ ConnectionB15B1GNDGroundA26A2CD-USB Connector D- ConnectionC37C3BATBattery Connection Input. Connect a 1FF capacitor as close as possible
between BAT and GND.A38A3VBUSB Connector VBUS Connection. Connect a 1FF capacitor as close
as possible between VB and GND for Q15kV ESD protection.A4——INTActive-Low Interrupt Request, Open-Drain Output—9A4LOUT+5.3V USB Transceiver VBUS Power Output. Connect a 1FF capacitor
as close as possible between LOUT and GND.—10—LOUT_SNSConnect Externally to LOUT (MAX14578AE, TQFN Only)B411B4CE1Charger-Enable Control 1, Open-Drain OutputC412C4CE2Charger-Enable Control 2, Open-Drain OutputB3——SDAI2C Serial-Data Input/Output. Connect SDA to an external pullup
resistor.—13B3CE0Charger-Enable Control 0, Open-Drain Output—14B2EN
Active-Low Enable Input. Drive EN low to enable the charger ID
detection and close the USB switches after charger detection is
complete.
USB Battery Charger Detectors
MAX14578E/MAX14578AE
MAX14578E Functional Diagram/Typical Application Circuit
MAX14578E
USB CHARGER DETECTION
CONTROL
LOGIC
USB
TRANSCEIVER
CD+TD+
CD-TD-
VCCVB
1µF
PMIC/
CHARGER
MICRO-B
USB
CONNECTOR
GND
VBUS
AUDIO CODEC/
AMPLIFIER
PROCESSOR
BAT
CE1
BATTERY
CE2
VIO
GND
1µF
INTINT
SCLSCL
SDASDA
VIO
VIO
PIN
NAMEFUNCTIONMAX14578EMAX14578AE
TQFN-EPWLPTQFN-EPWLPB2——SCLI2C Serial-Clock Input. Connect SCL to an external pullup resistor.C215C2TD-USB Transceiver D- Connection———EP
Exposed Pad (TQFN Only). EP is internally connected to GND.
Connect to a large ground plane to maximize thermal performance.
Not intended as an electrical connection point.
USB Battery Charger Detectors
MAX14578E/MAX14578AE MAX14578AE Functional Diagram/Typical Application Circuit
MAX14578AE
MAX14544
MAX8903/MAX8934
MAX8677
USB CHARGER DETECTION
LDO
CONTROL
LOGIC
USB
TRANSCEIVER
CD+TD+
CD-TD-
LOUT
VCCVB
1µF1µF
SWITCH MODE CHARGER
MICRO-B
USB
CONNECTOR
GND
VBUS
AUDIO CODEC/
AMPLIFIER
PROCESSOR
BAT
CE2
BATTERY
BATTERY
CE1CE0
IUSBDCMUSUS
CHG
VCC
GND
1µFEN
VIO
USB Battery Charger Detectors
MAX14578E/MAX14578AE
Table 1. Register Map
Table 2. Detailed Register Map
ADDRESSNAMEBIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0
0x00DEVICE IDVENDOR_ID CHIP_REV
0x01CONTROL INTPOLINTENUSBSWCCP_ENALOW_POWDCHKCHG_TYP_MUSB_CHGDET
0x02INTERRUPTCHG_TYPVBCOMPRFUDCD_TCHGRUNRFU
0x03CONTROL RFURFUDB_IDLESUS_LOWCE_FRCCE
0x04CONTROL RFURFURFUCDP_DETUSB_CPLSFOUT_ENSFOUTASRTDCD_EXIT
FIELD NAMEREAD/WRITEBITDEFAULTDESCRIPTION
DEVICE ID (I2C ADDRESS = 0x00)
VENDOR_IDRead Only[7:4]0010Vendor Identification
CHIP_REVRead Only[3:0]0001Chip Revision
CONTROL 1 (I2C ADDRESS = 0x01)
INTPOLRead/Write70
Interrupt Polarity
0 = Active low
1 = Active high
INTENRead/Write60
Interrupt Enable. If interrupt is disabled, pending interrupts
are not cleared and the INT pin deasserts. INTEN is a
global setting to mask all interrupts.
0 = Interrupt disabled
1 = Interrupt enabled
USBSWCRead/Write50
Opens/Closes USB Switch
0 = Switch open
1 = Switch closed
CP_ENARead/Write40
Charge-Pump Enable
0 = Charge pump disabled
1 = Charge pump enabled
LOW_POWRead/Write31
Low-Power Mode
0 = Low-power mode disabled; oscillator/bandgap always on
1 = Low-power mode enabled; oscillator/bandgap turned
off under the following conditions: no VBUS, USBSWC = 0,
and CP_ENA = 0
DCHKRead/Write20
Charger-Type Source-Detection Time
0 = DCHK, tDP_SRC_ON = 40ms
1 = DCHK, tDP_SRC_ON = 625ms
CHG_TYP_MRead/Write10
Charger-Type Manual-Detection Enable. Set CHG_TYP_M
to 1 to force the internal logic to open the USB switches
and perform a charger-type detection. After the detection
state matching completes, this bit resets to 0.
USB Battery Charger Detectors
MAX14578E/MAX14578AE
Table 2. Detailed Register Map (continued)
FIELD NAMEREAD/WRITEBITDEFAULTDESCRIPTION
USB_CHGDETRead/Write01
Charger-Detection-Enable Start. Charger detection starts
with any change in VB.
0 = Charger detection disabled
1 = Charger detection enabled
INTERRUPT (I2C ADDRESS = 0x02)
CHG_TYPRead Only[7:5]000
Output of USB Charger Detection
000 = Nothing attached
001 = USB cable attached
010 = Charging dowstream port: current depends on USB
operating speed
011 = Dedicated charger: current up to 1.8A
100 = Special charger: 500mA max
101 = Special charger: current up to 1A
110 = RFU
VBCOMPRead Only40
Output of VB Comparator. Changes in VBCOMP triggers
interrupt.
0 = VB < VVBDET
1 = VB R VVBDET
RFURead Only30
DCD_TRead Only20
Data-Contact Detection (DCD) Time Wait. DCD_T
generates an interrupt after a 0-to-1 transition.
0 = Data contact detection not running
1 = Data contact detection running for > 2s
CHGRUNRead Only10
Charger-Detection State Machine Running. For information
only—no interrupt generated.
0 = Charger detection not running
1 = Charger detection running (DCD, dead battery, D+/D-
short)
RFURead Only00Reserved
CONTROL 2 (I2C ADDRESS = 0x03)
DCD_ENRead/Write71
DCD Enable. If DCD_EN = 1, D+/D- is tested for a short
after DCD passes. If DCD_EN = 0, DCD is skipped and
D+/D- short detection begins when VBUS is connected or
CHG_TYP_M = 1. If DCD is stuck (DCD_T) = 1, setting
DCD_EN = 0 bypasses DCD and D+/D- short detection
begins.
0 = Disabled
1 = Enabled
