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LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
LG Electronics
50/115
LGE Property
Figure 21.U-USB Connector circuit
The TS5USBA33402 is a complete solution for multiplexing USB, UART and audio on a single mini/micro
USB connector. It contains an internal method for determining the device connected and uses an I2C bus for
control.
The switch will multiplex multiple inputs (USB, UART,Microphone, Stereo and Audio) on one mini/microUSB
connector. The USB and UART inputs support Hi-Speed USB and the audio inputs feature negative rail signal
operation allowing simple dc coupled headset speakers. The VB connection is protected against faults up to
28 volts. There is an internal device detection method which uses the USB ID signal pin and the voltage on
VBUS.
Each accessory will have a unique detection based on resistor values and voltage on VBUS. The host
microprocessor uses I2C to control the switch position as well as read the results of the accessory detection.
The TS5USBA33402 will also detect USB chargers including dedicated chargers (D+/D- shorted) and high
power host/hub chargers.
0
R302
0
R304
0.1u
C302
TS5USBA33402
EUSY0372001
U302
4
B
D2
B2
A1
A2
B3
C2
A4
C1
A3
D1
E4
D3
D4
E3
E2
C3
E1
C4
1
B
YL
P
P
U
S
V
UART_TX
VBUS
UART_RX
DM
DP
USB_DM
ID
USB_DP
AUDIO_L
R2_2K
AUDIO_R
MIC
DSS
_INT
SDA
CLDO
SCL
GND
T
E
SI
33
R310
0
R311
R312
33
10K
R313
C315
1u
TP301
R315
100K
2.2K
R317
DNI
R318
0.1u
C327
100K
R325
VBAT
USB_DP
USB_DM
UART_TX
UART_RX
VCHG_OUT
VBUS_VCHG
2V62_VIO
_MUIC_INT
I2C1_SCL
I2C1_SDA
3V1_VUSB
MUIC_DM
MUIC_DP
MUIC_ID
MUIC
(1608,25V,K,X7R)
CN301
15
13
11
9
7
5
4
3
2
1
14
12
10
8
6
22p
C301
27p
C305
3
A1
B5
01
C
P1
2
MF
N
10
3L
F
4
3
2
1
NI
T
U
O
1
G
2
G
C
CL
50
F
M
S
V
10
3
D
4
3
5
2
6
1
VBUS_VCHG
MUIC_DM
MUIC_DP
MUIC_ID
Micro USB
(1005,50V,J,NP0)
Содержание GT350
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