Texas Instruments TUSB216IEVM User manual

User’s Guide
TUSB216IEVM User's Guide
ABSTRACT
This user guide for the evaluation module (EVM) of the TUSB216I devices is available to provide an easy
evaluation process of our TUSB216I USB High-Speed signal conditioners.
This user’s guide provides an overview of the EVMs, which includes highlighting key features, operating
conditions, and how to setup for use in system-level evaluation.
The construction of the EVM also serves as a reference design that is easily modified for any intended
application. Target applications include Cell Phones, Desktop or Notebook Computers, Docking Stations, TVs,
and active Cables. Additional schematic and layout information is available on TI.com.
Table of Contents
1 TUSB216IEVM......................................................................................................................................................................... 2
2 TUSB216EVM Board Description.......................................................................................................................................... 3
2.1 TUSB216IEVM Kit Contents.............................................................................................................................................. 3
3 EVM Jumper and Switch Configuration................................................................................................................................4
3.1 Selecting Configuration Levels ..........................................................................................................................................5
4 EVM Operation........................................................................................................................................................................ 5
5 TUSB216IEVM Schematic...................................................................................................................................................... 6
6 TUSB216IEVM BOM..............................................................................................................................................................10
List of Figures
Figure 2-1. TUSB216IEVM ......................................................................................................................................................... 3
Figure 5-1. TUSB216IEVM Schematic........................................................................................................................................ 6
List of Tables
Table 3-1. 6x2 Configuration Header Pinout................................................................................................................................4
Table 3-2. 3x3 BOOST Header....................................................................................................................................................4
Table 3-3. RX_SEN 3x3 Header.................................................................................................................................................. 4
Table 3-4. RX_SEN/BOOST Setting Based on Cable Length..................................................................................................... 5
Trademarks
All trademarks are the property of their respective owners.
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1 TUSB216IEVM
The TUSB216I is a USB High-Speed signal conditioner designed to compensate both AC loss (due to capacitive
load) and DC loss (due to resistive loss) in the transmission channel
The TUSB216I speeds up the transition edges of USB 2.0 high-speed signal with an edge booster and increases
static levels with a DC boost function. The TUSB216I includes a pre-equalization function to improve the
receiver sensitivity and compensate the inter-symbol interference (ISI) jitter. USB low-speed and full-speed
signal characteristics are unaffected by the TUSB216I. The integrated CDP mode BC 1.2 battery charging
controller can be enabled via a control pin.
The TUSB216IEVM was designed to be used in path connection between a USB host and a USB device. The
EVM is designed to provide multiple connector options to help eliminate the use of adapters. The upstream
interface to the EVM consists of three possible input connectors: a USB 2.0 Mini-B Receptacle, a USB 3.1
Type B Receptacle, and a USB 3.1 Type-A Plug. The downstream interface to the EVM consists of three USB
3.1 Type-A Receptacle output connectors. Each section of the EVM is detachable from the main board along
the board perforations. The EVM can be connected to the system using various cable lengths to verify system
operation under different conditions.
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2 TUSB216EVM Board Description
The TUSB216IEVM is designed to provide easy evaluation of the redriver device for various types of
applications. The TUSB216IEVM is also meant to serve as a reference design to show a practical example
of how to use the device in a mass-production system.
Figure 2-1. TUSB216IEVM
2.1 TUSB216IEVM Kit Contents
This EVM kit contains the following items:
• TUSB216IEVM board
• This user’s manual
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3 EVM Jumper and Switch Configuration
The TUSB216IEVM has two 3x3 headers and a 6x2 header in each board partition to facilitate configuration
changes. The BOOST and RX_SEN 3x3 headers are arranged to allow for all possible device configurations,
including connecting RX_SEN to a LED so that the ENA_HS status output can be viewed easily. The corner pins
of the 3x3 headers are not connected.
The 6x2 header adds the ability to connect on-board pullups to the SDA and SCL pins to support I2C operation.
If I2C mode is not needed, the SCL/CD pin can be connected to a LED so the CD status can be easily checked.
Also, the 6x2 header provides connections for ground and to supply power manually to EVM. In addition, the
header adds the ability to enable CDP mode on the TUSB216I.
Table 3-1. 6x2 Configuration Header Pinout
Row 1 Row 2
EVM Power Input - use if 0 Ohm resistor connected to VBUS is
removed.
3.3V Power for I2c
SDA 4.7 kOhm I2C pullup - can be jumpered to SDA
SCL/CD 4.7 kOhm I2C pullup - can be jumpered to SCL/CD
CD LED
- can be jumpered to SCL/CD
GND
CDP_ENZ
- BC 1.2 Mode configuration
GND
GND GND
Changing these switch and jumpers settings without a complete understanding of the result is not
recommended. Configuration inputs are only read by the TUSB216I during power on reset or after de-asserting
the RSTN pin, changing these switch settings while the EVM is powered on has no effect. Refer to the device
data sheet for detailed pin descriptions and functionality along with EVM schematic for additional information.
The switch definitions are as follows:
RSTN Push button Switch (SW1, SW2, SW3):
• Push button to place redriver device in RESET
• Release to de-assert RESET
Table 3-2 includes the BOOST Jumper Settings.
Table 3-2. 3x3 BOOST Header
NC 3.6 KOhm to GND NC
1.8 KOhm to GND BOOST GND
NC 0 Ohm to GND NC
1. Center pin to bottom position sets BOOST Level 0
2. Center pin to left position sets BOOST Level 1
3. Center pin to top position sets BOOST Level 2
4. No connect of the center pin sets BOOST Level 3
Right Position of BOOST Jumper is short to GND.
Table 3-3 includes the RX_SEN Jumper Settings.
Table 3-3. RX_SEN 3x3 Header
NC 27 kOhm to GND NC
13 kOhm / 39 kOhm divider RX_SEN GND
NC ENA_HS LED NC
1. Top position sets low RX sensitivity.
2. No connect of the center pin sets mid RX sensitivity
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3. Center pin to left position sets high RX sensitivity
4. Center pin to bottom position enables the ENA_HS status LED.
Right Position of RX_SEN jumper is short to GND.
3.1 Selecting Configuration Levels
The primary purpose of the USB 2.0 signal conditioner is to restore the signal integrity of a USB High-Speed
channel to USB 2.0 compliant levels. The platform goal is to pass the USB Near-End or Far-End Eye Mask with
the device in the best location.
A typical use case is to place the USB 2.0 signal conditioner close to the USB connector on a Host platform
to pass Near-End Eye Mask testing. This includes systems where the USB connector may be placed at the
Far-End of a cable.
Typical RX Sensitivity and Boost recommendations based on cable length (28 AWG USB Cable) are shown in
Table 3-4. We recommend starting with the lower settings first.
Table 3-4. RX_SEN/BOOST Setting Based on Cable Length
Cable Length Boost RX SEN
0m - 2m Level 0 MID
3m-5m Level 1 MID / HIGH
4 EVM Operation
To install the EVM, perform the following steps:
1. Upstream connection: attach a USB2 or USB3 cable from a Host PC Type A connector to a Type B
connector (P2 or P4) of the EVM or connect P6 directly to the Host PC.
2. Downstream connection: attach a USB device directly or via a cable plugged into the Type A receptacle
connector (P1, P3 or P5) on the EVM.
3. The upstream connection and downstream connections must be on the same board section of the EVM.
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5 TUSB216IEVM Schematic
Figure 5-1. TUSB216IEVM Schematic
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TUSB216IEVM Schematic www.ti.com
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6 TUSB216IEVM BOM
Item Quantity Reference Part
1 15 C1,C4,C5,C8,C9,C12,C15,
C16,C18,C19,C23,C26,C27,C29,C30 0.1uF
2 3 C2,C13,C24 10uF
3 12 C3,C6,C10,C14,C20,C21, C25,C31,C32,C34,C36,C38 1uF
4 6 C7,C17,C28,C35,C37,C39 2.2uF
5 3 C11,C22,C33 4.7uF
6 6 D1,D2,D3,D4,D5,D6 LED
7 3 JMP1,JMP8,JMP9 Header 6x2
8 6 J1,J2,J3,J4,J5,J6 Header 3x3
9 1 LBL1 THT-14-423-10
10 3 L1,L2,L3 100ohms
11 1 PCB1 HSDC112
12 3 P1,P3,P5 USB3.0 Type A Receptacle
13 1 P2 Mini USB B
14 1 P4 USB3.0 Type B Receptacle
15 1 P6 USB 3.0 Type A
16 6 R1,R7,R16,R22,R31,R37 0
17 3 R2,R18,R32 27 k
18 3 R3, R17, R33 1k
19 6 R4,R5,R19,R20,R34,R35 75
20 3 R6,R21,R36 3.6 k
21 3 R8,R24,R38 1.8 k
22 3 R9,R25,R39 39 k
23 0 R10,R23,R40 10k 1% DNI
24 3 R11,R30,R41 13 k
25 0 R12,R13,R26,R27,R42,R43 0 DNI
26 3 R14,R28,R44 22 k
27 0 R15,R29,R45 75k 1% DNI
28 6 R46,R47,R48,R49,R50,R51 4.7 k
29 6 SHNT1,SHNT2,SHNT3, SHNT4,SHNT5,SHNT6 QPC02SXGN-RC
30 3 SW1,SW2,SW3 Switch - Push Button
31 3 U1,U4,U7 TUSB216IRWB
32 3 U2,U5,U8 TPS2024D
33 3 U3,U6,U9 SN74AHC1G86DBV
34 3 U10,U11,U12 TPS70633
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