DATA SHEET
TUSB321AI USB Type-C Configuration Channel Logic and Port Control with VCONN
1 Features
- USB Type-C™ Specification 1.1
- Backward Compatible with USB Type-C Specification 1.0
- Supports Up to 3 A of Current Advertisement through dedicated Current Mode pin
- Mode Configuration
- Host Only – DFP (Source)
- Device Only – UFP (Sink)
- Dual Role Port – DRP
- Channel Configuration (CC)
- Attach of USB Port Detection
- Cable Orientation Detection
- Role Detection
- Type-C Current Mode advertisement and detection (Default, Medium, High)
- VBUS Detection
- VCONN Support for Active Cables
- Cable Detection and Direction Control
for External Switches - Supply Voltage: 4.5 V to 5.5 V
- Low Current Consumption
- Industrial Temperature Range of –40 to 85°C
2 Applications
- Host, Device, Dual Role Port Applications
- Mobile Phones
- Tablets and Notebooks
- USB Peripherals
3 Description
The TUSB321AI device enables USB Type-C ports with the configuration channel (CC) logic needed for Type-C ecosystems. The TUSB321AI device uses the CC pins to determine port attach and detach, cable orientation, role detection, and port control for Type-C current mode. The TUSB321AI device can be configured as a downstream facing port (DFP), upstream facing port (UFP) or a dual role port (DRP) making it ideal for any application.
The TUSB321AI device when configured as a DRP alternates configuration as a DFP or UFP according to the Type-C Specifications. The CC logic block monitors the CC1 and CC2 pins for pullup or pulldown resistances to determine when a USB port has been attached, the orientation of the cable, and the role detected. The CC logic detects the Type-C current mode as default, medium, or high depending on the role detected. VBUS detection is implemented to determine a successful attach in UFP and DRP modes.
The device operates over a wide supply range and has low-power consumption. The TUSB321AI device is available in industrial and commercial temperature ranges.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TUSB321AI | X2QFN (12) | 1.60 mm × 1.60 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Simplified Schematic
Sample Application
4 Revision History
Changes from * Revision (October 2015) to A Revision
- Changed RVBUS values From: MIN = 891, TYP = 900, MAX = 909 KΩ To: MIN = 855, TYP = 887, MAX = 920 KΩ Go
5 Pin Configuration and Functions
RWB Package
12-Pin X2QFN
Top View
Pin Functions
| PIN | TYPE | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| CC1 | 1 | I/O | Type-C configuration channel signal 1 |
| CC2 | 2 | I/O | Type-C configuration channel signal 2 |
| CURRENT_MODE | 3 | I | Advertise VBUS current. This 3-level input is used to control current advertisement in DFP mode or DRP mode connected as source. (See Table 2.) L - Default Current. Pull-down to GND or leave unconnected. M - Medium (1.5A) current. Pull-up to VDD with 500-kΩ resistor. H - High (3.0A) current. Pull-up to VDD with 10-kΩ resistor. |
| PORT | 4 | I | Tri-level input pin to indicate port mode. The state of this pin is sampled when VDD is active. H - DFP (Pull-up to VDD if DFP mode is desired) NC - DRP (Leave unconnected if DRP mode is desired) L - UFP (Pull-down or tie to GND if UFP mode is desired) |
| VBUS_DET | 5 | I | 5- to 28-V VBUS input voltage. VBUS detection determines UFP attachment. One 900-kΩ external resistor required between system VBUS and VBUS_DET pin. |
| VCONN_FAULT | 6 | O | Open-drain output and is asserted low for when VCONN over-current fault is detected. |
| OUT1 | 7 | I/O | This pin is an open drain output for communicating Type-C current mode detect when the TUSB321AI device is in UFP mode. Default current mode detected (H); medium or high current mode detected (L). (See Table 2.) |
| OUT2 | 8 | I/O | This pin is an open drain output for communicating Type-C current mode detect when the TUSB321AI device is in UFP mode: default or medium current mode detected (H); high current mode detected (L). (See Table 2.) |
| ID | 9 | O | Open drain output; asserted low when the CC pins detect device attachment when port is a source (DFP), or dual-role (DRP) acting as source (DFP). |
| GND | 10 | G | Ground |
| DIR | 11 | O | DIR of plug. This open drain output indicates the detected plug orientation: Type-C plug position 2 (H); Type-C plug position 1 (L). |
| VDD | 12 | P | Positive supply voltage |
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)(1)| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Supply voltage | VDD | –0.3 | 6.0 | V |
| Control pins | CC1, CC2, PORT, CURRENT_MODE, ID, DIR, VCONN_FAULT | –0.3 | VDD + 0.3 | V |
| OUT1, OUT2 | –0.3 | VDD + 0.3 | ||
| VBUS_DET | –0.3 | 4 | ||
| Storage temperature, Tstg | –65 | 150 | °C | |
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
6.2 ESD Ratings
| VALUE | UNIT | |||
|---|---|---|---|---|
| V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±3000 | V |
| Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±1500 | |||
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)| MIN | NOM | MAX | UNIT | ||
|---|---|---|---|---|---|
| Supply voltage range,VDD | 4.5 | 5.5 | V | ||
| System VBUS voltage | 4 | 5 | 28 | V | |
| DC Voltage range for VBUS_DET | VBUS_DET | 0 | 4 | V | |
| DC Voltage range for control pins | ID, DIR, VCONN_FAULT, OUT1, OUT2, CURRENT_MODE, CC1, CC2, PORT | 0 | 5.5 | V | |
| Supply for active cable (With VDD at 5 V) | VCONN | 4.75 | 5.5 | V | |
| Operating free air temperature, TA | –40 | 25 | 85 | °C | |
6.4 Thermal Information
| THERMAL METRIC(1) | TUSB321AI | UNIT | |
|---|---|---|---|
| RWB (X2QFN) | |||
| 12 PINS | |||
| RθJA | Junction-to-ambient thermal resistance | 169.3 | °C/W |
| RθJC(top) | Junction-to-case (top) thermal resistance | 68.1 | °C/W |
| RθJB | Junction-to-board thermal resistance | 83.4 | °C/W |
| ψJT | Junction-to-top characterization parameter | 2.2 | °C/W |
| ψJB | Junction-to-board characterization parameter | 83.4 | °C/W |
| RθJC(bot) | Junction-to-case (bottom) thermal resistance | N/A | — |
(1) For more information about traditional and new thermal metrics, see the Semiconductor and C Package Thermal Metrics application report.
6.5 Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)| PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| Power Consumption | ||||||
| I(UNATTACHED_UFP) | Current consumption in unattached mode when port is unconnected and waiting for connection. (VDD = 5 V, PORT = L) | 70 | µA | |||
| I(ACTIVE_UFP) | Current consumption in active mode. (VDD = 5 V, PORT = L) | 70 | µA | |||
| CC1 and CC2 Pins | ||||||
| R(CC_D) | Pulldown resistor when in UFP or DRP mode. | 4.6 | 5.1 | 5.6 | kΩ | |
| RCC_DB | Pulldown resistor when in dead-battery mode | VDD = 0V. | 4.1 | 5.1 | 6.1 | kΩ |
| VUFP_CC_USB | Voltage level range for detecting a DFP attach when configured as a UFP and DFP is advertising default current source capability. | 0.25 | 0.61 | V | ||
| VUFP_CC_MED | Voltage level range for detecting a DFP attach when configured as a UFP and DFP is advertising medium (1.5 A) current source capability. | 0.70 | 1.16 | V | ||
| VUFP_CC_HIGH | Voltage level range for detecting a DFP attach when configured as a UFP and DFP is advertising high (3 A) current source capability. | 1.31 | 2.04 | V | ||
| VTH(DFP_CC_USB) | Voltage threshold for detecting a UFP attach when configured as a DFP and advertising default current source capability. | 1.51 | 1.6 | 1.64 | V | |
| VTH(DFP_CC_MED) | Voltage threshold for detecting a UFP attach when configured as a DFP and advertising medium current (1.5 A) source capability. | 1.51 | 1.6 | 1.64 | V | |
| VTH(DFP_CC_HIGH) | Voltage threshold for detecting a UFP attach when configured as a DFP and advertising high current (3.0 A) source capability. | 2.46 | 2.6 | 2.74 | V | |
| VTH(AC_CC_USB) | Voltage threshold for detecting a active cable attach when configured as a DFP and advertising default current source. | 0.15 | 0.20 | 0.25 | V | |
| VTH(AC_CC_MED) | Voltage threshold for detecting a active cable attach when configured as a DFP and advertising medium current (1.5 A) source. | 0.35 | 0.40 | 0.45 | V | |
| VTH(AC_CC_HIGH) | Voltage threshold for detecting a active cable attach when configured as a DFP and advertising high current (3 A) source. | 0.76 | 0.80 | 0.84 | V | |
| ICC(DEFAULT_P) | Default mode pullup current source when operating in DFP or DRP mode. | 64 | 80 | 96 | µA | |
| ICC(MED_P) | Medium (1.5 A) mode pullup current source when operating in DFP or DRP mode. | 166 | 180 | 194 | µA | |
| ICC(HIGH_P) | High (3 A) mode pullup current source when operating in DFP or DRP mode.(1) | 304 | 330 | 356 | µA | |
| Control Pins: PORT, CURRENT_MODE, VCONN_FAULT, DIR, ID, OUT1, OUT2 | ||||||
| VIL | Low-level control signal input voltage, (PORT, CURRENT_MODE) | 0.4 | V | |||
| VIM | Mid-level control signal input voltage (PORT, CURRENT_MODE) | 0.28 × VDD | 0.56 × VDD | V | ||
| VIH | High-level control signal input voltage (PORT, CURRENT_MODE) | VDD - 0.3 | V | |||
| IIH | High-level input current | –20 | 20 | µA | ||
| IIL | Low-level input current | –10 | 10 | µA | ||
| IID_LEAKAGE | Current leakage for ID pin. | VDD = 0V; ID = 5V | 10 | µA | ||
| RPU | Internal pullup resistance (PORT) | 588 | kΩ | |||
| RPD | Internal pulldown resistance (PORT) | 1.1 | MΩ | |||
| RPD(CUR) | Internal pulldown resistance for CURRENT_MODE pin | 275 | kΩ | |||
| VOL | Low-level signal output voltage (open-drain) (VCONN_FAULT, ID, OUT1, OUT2, DIR) | IOL = –1.6 mA | 0.4 | V | ||
| RP(ODext) | External pullup resistor on open drain IOs (VCONN_FAULT, ID, OUT1, OUT2, DIR) | 200 | kΩ | |||
| RP(TLext) | Tri-level input external pull-up resistor (PORT) | 4.7 | kΩ | |||
| RP(cm_med) | External pull-up resistor on CURRENT_MODE pin to advertise 1.5-A current | 500 | kΩ | |||
| RP(cm_high) | External pull-up resistor on CURRENT_MODE pin to advertise 3.0-A current | 10 | kΩ | |||
| VBUS_DET IO Pins (Connected to System VBUS signal through external resistor) | ||||||
| VBUS(THR) | VBUS threshold range | 2.95 | 3.30 | 3.80 | V | |
| RVBUS | External resistor between VBUS and VBUS_DET pin | 855 | 887 | 920 | KΩ | |
| R(VBUS_PD) | Internal pulldown resistance for VBUS_DET | 95 | KΩ | |||
| VCONN | ||||||
| RON | On resistance of the VCONN power FET | 1.25 | Ω | |||
| V(TOL) | Voltage tolerance on VCONN power FET | 5.5 | V | |||
| V(PASS) | Voltage to pass through VCONN power FET | 5.5 | V | |||
| I(VCONN) | VCONN current limit; VCONN is disconnected above this value | 225 | 300 | 375 | mA | |
| CBULK | Bulk capacitance on VCONN; placed on VDD supply | 10 | 200 | µF | ||
(1) VDD must be 3.5 V or greater to advertise 3 A current.
6.6 Switching Characteristics
over operating free-air temperature range (unless otherwise noted)| PARAMETER | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|
| tCCCB_DEFAULT | Power on default of CC1 and CC2 voltage debounce time | 168 | ms | ||
| tVBUS_DB | Debounce of VBUS_DET pin after valid V(BUS_THR) (See Figure 1.) | 2 | ms | ||
| tDRP_DUTY_CYCLE | Power-on default of percentage of time DRP advertises DFP during a TDRP | 30% | |||
| tDRP | The period TUSB321AI in DRP mode completes a DFP to UFP and back advertisement. | 50 | 75 | 100 | ms |
Figure 1. VBUS Detect and Debounce
