FSA9280AUMX_12 [FAIRCHILD]
USB Port Multimedia Switch Featuring Automatic Select and Accessory Detection; USB端口多媒体交换机设有自动选择和配件检测
| 型号： | FSA9280AUMX_12 |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | USB Port Multimedia Switch Featuring Automatic Select and Accessory Detection |
| 文件： | 总5页 (文件大小：688K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
June 2012
FSA9280A
USB Port Multimedia Switch Featuring Automatic Select
and Accessory Detection
Features
Description
The FSA9280A is a high-performance multimedia switch
featuring automatic switching and accessory detection for
the USB port. This switch allows sharing of a common USB
port to pass audio, USB data / charging, as well as factory
programmability. In addition, the FSA9280A integrates
detection of accessories; such as headphones, headsets
(MIC / button), car chargers, USB chargers, and UART data
cables; with the ability to use a common USB connector. The
FSA9280A can be programmed for manual or automatic
switching of data paths based on accessory detected.
FSA9280A includes an integrated 28V over-voltage and
1.5A over-current protected FET.
Signals
Audio, USB, UART, USB Charging
Switch
Mechanism
Automatic Switching with
Available Interrupt
Headsets (Headphone/MIC/Remote)
USB Data Port (SDP)
UART Serial Link
USB Chargers (Car-Kit, CDP, DCP)
Factory-Mode
Accessory
Detection
TTY Converter
USB
FS and HS 2.0 Compliant
Battery Charging 1.1 Compliant
(Including Optional DCD)
Integrated Power FET
USB Charging
Applications
Over-Voltage Tolerance (OVT) 28V
Over-Current Protection (OCP) 1.5A
Over-Voltage Protection (OVP) 6.8V
.
Mobile Phones & Portable Media Players
Audio
Left, Right, MIC, TTY
Related Resources
VBAT
3 to 4.4V
I2C
Programmability
ESD
.
.
.
FSA9280A Evaluation Board
Evaluation Board Users Guide
15kV IEC 61000-4-2 Air Gap
20-Lead UMLP
(3 x 4 x 0.55mm, 0.5mm Pitch)
Package
For samples, questions or board requests; please
contact analogswitch@fairchildsemi.com
Ordering
Information
FSA9280AUMX
FSA9280A
Figure 1. Typical Application
© 2008 Fairchild Semiconductor Corporation
FSA9280A • Rev 1.0.9
www.fairchildsemi.com
Table of Contents
Features.......................................................................................................................................................................................1
Description ...................................................................................................................................................................................1
Applications..................................................................................................................................................................................1
Related Resources.......................................................................................................................................................................1
Table of Contents.........................................................................................................................................................................2
Block Diagram..............................................................................................................................................................................3
Pin Configuration..........................................................................................................................................................................3
Pin Descriptions ...........................................................................................................................................................................4
1. Functionality..........................................................................................................................................................................5
1.1. Functional Overview ...................................................................................................................................................5
2. Power-up & Reset.................................................................................................................................................................6
2.1. Reset ..........................................................................................................................................................................6
2.1.1. Hardware Reset...............................................................................................................................................6
2.1.2. Software Reset................................................................................................................................................6
3. I2C.........................................................................................................................................................................................7
4. Configuration.........................................................................................................................................................................8
5. Detection...............................................................................................................................................................................8
5.1. USB Port Detection...................................................................................................................................................10
5.2. Audio Accessory Detection.......................................................................................................................................12
5.3. OCP and OVP Detection ..........................................................................................................................................13
6. Processor Communication..................................................................................................................................................13
7. Switch Configuration ...........................................................................................................................................................13
7.1. Manual Switching......................................................................................................................................................14
8. Active Signal Performance..................................................................................................................................................15
8.1. USB Data..................................................................................................................................................................15
8.2. FS USB.....................................................................................................................................................................15
8.3. Audio ........................................................................................................................................................................15
9. Electrical Specifications ......................................................................................................................................................16
9.1. Absolute Maximum Ratings ......................................................................................................................................16
9.2. Recommended Operating Conditions.......................................................................................................................16
9.3. Switch Path DC Electrical Characteristics.................................................................................................................16
9.4. Capacitance..............................................................................................................................................................18
9.5. Switch Path AC Electrical Characteristics.................................................................................................................18
9.6. I2C Controller DC Characteristics..............................................................................................................................19
9.7. I2C AC Electrical Characteristics & Register Map.....................................................................................................19
9.8. Factory Modes..........................................................................................................................................................23
9.8.1. Factory-Mode Accessory Detection...............................................................................................................23
10. Reference Schematic..........................................................................................................................................................26
11. Layout Guidelines ...............................................................................................................................................................27
11.1. PCB Layout Guidelines for High-Speed USB Signal Integrity ..................................................................................27
11.2. Layout for GSM/TDMA Buzz Reduction ...................................................................................................................27
11.3. VBUS_OUT Load Timing Requirements........................................................................................................................27
11.4. Systems with Multiple USB Controllers ....................................................................................................................28
Physical Dimensions ..................................................................................................................................................................29
© 2011 Fairchild Semiconductor Corporation
FSA9280A • Rev 1.0.9
www.fairchildsemi.com
2
Block Diagram
VBAT
Phone
Power
FSA9280A
VBUS_OUT
Charger IC
CHG_DET
Micro
USB
MIC
Audio
Codec
Audio_R
Audio_L
‐ Detection
OCP,OVP
VBUS_IN
3:1
MUX
and
Charge
Pump
DM_CON
DP_CON
ID_CON
GND
RxD
TxD
FS USB
or UART
DP_HOST
DM_HOST
HS USB
Charger
Detect
INTB
I2C_SCL
I2C_SDA
Interrupt
I2C
Switch
Control
and
Baseband
Float
Detect
Processor
VDDIO
I2C
Slave
JIG
BOOT
ADC ID
Detect
Figure 2. Block Diagram
Pin Configuration
20
19
18
17
1
2
3
4
5
6
16
15
14
13
12
11
Audio_R
Audio_L
MIC
CHG_DET
VBUS_OUT
I2C_SCL
GND
Exposed DAP
DP_HOST
DM_HOST
RxD
I2C_SDA
INTB
VBAT
7
8
9
10
Figure 3. Pin Assignments (Top View)
© 2011 Fairchild Semiconductor Corporation
FSA9280A • Rev 1.0.9
www.fairchildsemi.com
3
Physical Dimensions
0.10 C
2X
3.00
A
2.80
1.70
B
PIN1
IDENT
3.80
4.00
2.70
0.60
20X
0.10 C
2X
0.50
0.30
20X
TOP VIEW
0.55 MAX
A
0.10 C
RECOMMENDED LAND PATTERN
(0.15)
C
0.08 C
0.05
0.00
SEATING
PLANE
SIDE VIEW
NOTES:
1.70
1.60
A. PACKAGE CONFORMS TO JEDEC MO-220
EXCEPT WHERE NOTED.
10
7
B. DIMENSIONS ARE IN MILLIMETERS.
6
11
16
C. DIMENSIONS AND TOLERANCES PER
ASME Y14.5M, 1994.
D. DRAWING FILENAME: MKT-UMLP20Arev1.
2.70
2.60
E. LAND PATTERN RECOMMENDATION IS
BASED ON FSC DESIGN ONLY
0.25
0.15
20X
0.10
0.05
C
C
A B
1
PIN 1
IDENT
20
17
0.50
0.45
0.35
20X
BOTTOM VIEW
20-Lead Ultrathin Molded Leadless Package (UMLP), 3 x 4 x 0.55mm, 0.5mm Pitch
Figure 30.
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without
notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most
recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty
therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/.
Please visit Fairchild Semiconductor’s online packaging area for the most recent tape and reel specifications:
http://www.fairchildsemi.com/packaging/3x4UMLP20_TNR.pdf.
Part Number
Operating Temperature Range
Top Mark
Package
20-Lead Ultrathin Molded Leadless
Package (UMLP), 3 x 4 x 0.55mm, 0.5 Pitch
FSA9280AUMX
-40 to +85°C
9280A
© 2011 Fairchild Semiconductor Corporation
FSA9280A • Rev 1.0.9
www.fairchildsemi.com
29
© 2011 Fairchild Semiconductor Corporation
FSA9280A • Rev 1.0.9
www.fairchildsemi.com
30
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