ST STOTG04E User Manual

Feature summary

■ Meets USB specification Rev. 2.0 And on-the-

go supplement to the USB 2.0 specification

■ Analog car kit-compatible

■ Four operating modes: USB, I

Audio

■ Configurable using I

■ Capable of 12Mbit/s full-speed and 1.5Mbit/s

C serial interface

low-speed modes of operation

■ Standard digital interface compliant with the

OTG transceiver specification

■ Supports the session request protocol (SRP)

and host negotiation protocol (HNP)

■ 35mA typical V

charge pump output current

BUS

for 3.3V supply voltage

■ Ability to control external charge pump for

higher VBUS currents

■ Integrated pull-up/-down resistors

■ ±6kV ESD Protection on all USB pins (contact

discharge)

■ +1.6V to +3.6V Digital power supply and +2.7V

to +5.5V analog supply voltage range

■ Power-down mode with very low power

consumption for battery powered devices

C, UART and

STOTG04E

USB-OTG Full-speed Transceiver

QFN24 (4mmx4mm)

Description

The STOTG04 is a USB On-The-Go full-speed transceiver. It provides complete physical layer (PHY) solution for any USB-OTG device. It contains V line detector and interrupt generator, and the USB differential driver and receivers. The STOTG04 transceiver is suitable for mobile and battery powered devices because of its low power consumption and power-down operating mode.

The transceiver is capable of operation in several different modes. It can operate in basic USB-OTG mode, as an I audio mode. Behavior of the transceiver is fully configurable through the two-wire I The transceiver supports session request protocol and host negotiation protocol.

charge pump and comparators, ID

BUS

C and UART transceiver, or in

C serial bus.

Applications

■ Mobile phones

■ PDAs

■ MP3 players

■ Digital cameras

■ Printers

players, printers and digital cameras.

Order code

Part number Package Packaging

STOTG04EQTR QFN24 (4mm x 4mm) 4000 parts per reel

October 2006 Rev. 3 1/26

www.st.com

The applications are mobile phones, PDAs, MP3

Contents STOTG04E

Contents

1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Charge pump characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6 Block description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.1 Charge pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.2 V

Comparators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

BUS

6.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.4 ID Line detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.5 Driver and receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.6 Control logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.7 Modes of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.7.1 Power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.7.2 USB Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.7.3 UART and I

6.7.4 Audio mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

C modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6.8 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.9 I

C Bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.10 Device address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.11 Bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.12 External charge pump switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2/26

STOTG04E Pin configuration

1 Pin configuration

Figure 1. Pin connections (Bottom View )

Table 1. Pin description

PlN N° SYMBOL I/O NAME AND FUNCTION

1 ADR_PSW I/O

2 SDA I/O

3SCLI

Least significant bit of the I PSW output enabling or disabling an external charge pump

C serial data (1)

I2C clock 4 RESET/ I Active low logic reset 5 INT/ O Active low interrupt signal (open-drain) 6 SPEED I Mode of the transceiver (0 = low-speed, 1 = full-speed) (2)

TRM

Power

Internal voltage regulator output; an external decoupling capacitor should be

connected (3) 8 SUSPEND I Power down input (0 = active mode, 1 = power down) (See

9 OE_TP_INT/ I/O

Output enable of the differential driver in the USB mode, I

C mode or interrupt output 10 VM O D– single-ended receiver output 11 VP O D+ single-ended receiver output 12 RCV O Differential receiver output

ExpPad - Not Connected

13 SE0_VM I/O

14 DAT_VP I/O

15 D- I/O

16 D+ I/O

Single-ended zero input/output in the DAT_SE0 transmit mode, negative data input/output in the single-ended transmit mode or TXD in the UART mode Data input/output in the DAT_SE0 transmit mode, positive data input/output in the single-ended transmit mode or RXD in the UART mode

Negative data line in the USB mode, I2C clock output in the I2C mode or serial data output in the UART mode

Positive data line in the USB mode, I

input in the UART mode 17 GND Power Common analog and digital ground 18 ID I/O ID pin of the USB connector used for protocol identification 19

BUS

I/O

line of the USB interface – it needs an external capacitor of 4.7µF

BUS

C address of the transceiver input latched on reset;

C serial data in the I2C mode or serial data

Ta bl e 8

)

C data enable in the

3/26

Pin configuration STOTG04E

PlN N° SYMBOL I/O NAME AND FUNCTION

BAT

Power Analog power supply voltage (+2.7V to +5.5V) 21 CAP1 I/O External capacitor pin for the charge pump 22 CAP2 I/O External capacitor pin for the charge pump 23 CGND Power Ground for the charge pump 24

(1) Input and open-drain output (2) Input with internal pull-up resistor (3) Internal regulator can be bypassed by connecting V

Power Logic power supply (+1.6V to 3.6V)

to this pin when the V

BAT

is in range of 2.7V to 3.6V

BAT

Figure 2. Functional diagram

4/26

STOTG04E Maximum ratings

2 Maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

BAT

DCDIG

STG

ESD

(*) In accordance to IEC61000-4-2, level 3. Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional Operation under these con-

ditions is not implied.

Table 3. Thermal data

Symbol Parameter Value Unit

thJA

Table 4. Recommended operating condition

Symbol Parameter Min. Typ. Max. Unit

BAT

EXT

TRM

Logic Supply Voltage -0.5 to + 4.5 V

Analog Supply Voltage -0.5 to + 6.5 V

DC Input Voltage on any logic interface pin -0.5 to + 4.5 V

Storage Temperature Range -65 to + 150 °C

Electrostatic discharge voltage on USB pins

Human Body Model ± 8 Contact Discharge (*) ± 6

Thermal Resistance Junction-Ambient 59 °C/W

Logic Supply Voltage 1.6 1.8 3.6 V

Analog Supply Voltage 2.7 3.3 5.5 V

Operating Temperature Range -40 +85 °C

Charge pump external capacitor 100 220 470 nF

Charge pump tank capacitor 1 4.7 6.5 µF

Voltage regulator external capacitor 1 µF

Data lines impedance matching resistor 20 Ω

Table 5. ESD Performance

Symbol Parameter Value Unit

IEC-61000-4-2 (D+, D-, VBUS, ID)

ESD

IEC-61000-4-2 (other pins)

Air discharge (10 pulses) ± 8 Contact discharge (10 pulses) ± 6 Air discharge (10 pulses) ± 2 Contact discharge (10 pulses) ± 2

5/26

Electrical characteristics STOTG04E

3 Electrical characteristics

Table 6. Electrical characteristics

Characteristics measured over recommended operating conditions unless otherwise is noted. All typical values are referred to T

= 220nF, CT = 4.7µF and C

EXT

Symbol Parameter Test Conditions Min. Typ. Max. Unit

BAT

Digital Part Supply Current

Operating Supply Current

LOGIC INPUTS AND OUTPUTS

LKG

BUS

BUS_LKGVBUS

BUS_RIPVBUS

VBUSVBUS

VBUS

BUS_VLD

HIGH level output voltage

LOW level output voltage

HIGH level input voltage

LOW level input voltage

Input leakage current -1 1 µA

Off-state output current -5 5 µA

output voltage I

BUS

leakage voltage

output ripple I

Charge-pump switching frequency (2)

input impedance

Maximum V

valid comparator

BUS

source current C

BUS

threshold Session valid comparator

SES_VLD

threshold for both A and B devices

VBUS_PUVBUS

VBUS_PD

charge pull-up resistance

discharge pull-down

BUS

resistance

ID_BIAS

ID_PU

ID_GND

ID_FLOAT

ID pin bias voltage

ID pin pull-up resistance 70 105 130 kΩ

ID line short resistance to detect id_gnd state 10 Ω

ID line short resistance to detect id_float state 800 kΩ

TRM

Active mode (1,2) 0.6 1.6 mA Power down mode 1 µA Transceiver current while

transmitting and receiving (1, 2) Charge pump current, I

Power down mode (4) 1 µA

= -100µA VIF-0.15

= -2mA VIF-0.40

= 100µA

= 2mA

= 8mA

LOAD

No Load 3 200 mV

= 8mA, CT = 4.7µF

LOAD

= 220 nF, V

EXT

Low to high transition 4.40 High to low transition 4.40 Low to high transition 0.8 2.0

High to low transition 0.8 2.0

= 140kΩ, V

CP_ID

= 25°C, VIF = 1.8V, V

= 1µF

LOAD

> 4.4V

BUS

≤ 5V

BAT

= 8mA

= 3.3V, RS = 20Ω,

BAT

4.5 7

17 25

0.15 V

0.40 V

0.7V

0.3V

4.4 4.9 5.25 V

30 60 mV

0.5 0.8 1.5 MHz

40 76 100 kΩ

20 35 mA

281 640 Ω

656 1260 Ω

1.3 1.9 3.0 V

6/26

STOTG04E Electrical characteristics

Symbol Parameter Test Conditions Min. Typ. Max. Unit

DIFFERENTIAL DRIVER

DRV

OH_DRV

OL_DRV

CRS

Output Impedance

HIGH level output voltage

LOW level output voltage

Driver crossover voltage

DIFFERENTIAL AND SINGLE-ENDED RECEIVERS

SE-TH

PU_D+

PU_D-

DT_LKG

Differential receiver input

sensitivity (V

D+

- VD-)

SE receivers switching threshold

Input resistance PU/PD resistor deactivated 1.5 MΩ

Input capacitance 10 30 pF

Data line pull-up resistance on pin D+

Data line pull-up resistance on pin D-

Data line pull-down resistance 14.25 17.0 24.8 kΩ

Data line leakage voltage

CAR KIT INTERRUPT DETECTOR

CR_INT_TH

C AND UART MODES – D+ AND D- PINS

DP_I2C

Car kit Interrupt threshold 0.4 0.6 V

HIGH level output voltage (3)

LOW level output voltage

HIGH level input voltage 2.0 V

LOW level input voltage 0.8 V

SDA line internal pull-up resist. 1425 2200 3090 Ω

VOLTAGE REGULATOR

TRM

(1) Transmitting and receiving at 12Mbit/s, loads of 50pF on D+ and D- pins, no capacitive loads on VP and VM pins (2) Not tested in production; characterization only (3) Except D+ pin in the I2C mode where this pin is open-drain with internal pull-up resistor (4) See paragraph 6.7.1

Internal power supply voltage

Voltage regulator output current

Excluding external R

= 14.25kΩ, V

RLH = 14.25kΩ, V

= 1.425kΩ

= 50 to 600pF

LOAD

= 0.8 to 2.5V

TRM

= 3.3V

= 2.7V

81624Ω

2.8 3.6 V

2.6 3.0 V

00.3V

1.3 1.67 2.0 V

-200 200 mV

Low to high transition 0.8 1.6 2.0 High to low transition 0.8 1.1 2.0

Bus Idle 900 1300 1575 Receiving mode 1425 2200 3090

900 1300 1575 Ω

= 300kΩ

PU_EXT

= -2mA

= 2mA

= 3.3 to 5V, no load; 2V7en=0

BAT

= 2.8 to 5V, no load; 2V7en=1

BAT

= 3.6V, V

BAT

= 3.0V, V

BAT

> 3V; 2V7en=0

TRM

>2.6V; 2V7en=1

TRM

200 342 mV

2.4 3.6 V

00.4V

3.0 3.3 3.6 V

2.6 2.75 2.9 V

20 mA

10 mA

Ω

7/26

Electrical characteristics STOTG04E

Table 7. Switching characteristics

Over recommended operating conditions unless otherwise is noted. All the typical values are referred to T

= 1µF

TRM

Symbol Parameter Test Conditions Min. Typ. Max. Unit

VBUS_RISEVBUS

DIFFERENTIAL DRIVER

P_DRV_R

P_DRV_F

RFM

SINGLE-ENDED RECEIVERS

P_SE_R

P_SE_F

DIFFERENTIAL RECEIVER

P_DIF_R

P_DIF_F

DIGITAL INTERFACE

SET_OE

TA _ OI

TA _ IO

I2C BUS (3)

SCL

LOW

HIGH

IICR

rise time I

Data signal rise time

Propagation delay of the driver, rising edge; DAT_SE0 mode

Propagation delay of the driver, rising edge; VP_VM mode

Propagation delay of the driver, falling edge; DAT_SE0 mode

Propagation delay of the driver, rising edge; VP_VM mode

Rise and fall time matching (tR/ tF) excluding the first transition from the idle state

Propagation delay of the SE receiver, rising edge

Propagation delay of the SE receiver, falling edge

Propagation delay of the SE receiver, rising edge

Propagation delay of the SE receiver, falling edge

Output enable setup time 50 ns Output to input bus turnaround

time (1, 2) Output to input bus turnaround

time (1, 2)

SCL clock frequency 100 kHz

Low period of the SCL clock 4.7 µs

High period of the SCL clock 4.0 µs Rise time of both SDA and SCL

signals

= 25°C, VIF = 1.8V, V

LOAD

Full-speed mode, C

Low-speed mode, C

Full-speed mode, C

Low-speed mode, C

Full-speed mode, C

Low-speed mode, C

Full-speed mode, C

Low-speed mode, C

Full-speed mode, C

Low-speed mode, C

Full-speed mode, C

Low-speed mode, C

Full-speed mode 90 111.11

Low-speed mode 80 125

Full-speed mode, input slope 15ns 18 Low-speed mode, input slope 150ns Full-speed mode, input slope 15ns 18 Low-speed mode, input slope

150ns

Full-speed mode, input slope 15ns 24 Low-speed mode, input slope

150ns Full-speed mode, input slope 15ns 24 Low-speed mode, input slope 150ns

= 3.3V, RS = 20Ω, C

BAT

= 8mA, CT = 10µF

LOAD

= 50pF

= 600pF

= 50pF

= 600pF

= 50pF

= 600pF

= 50pF

= 600pF

= 50pF

= 600pF

= 50pF

= 600pF

= 220nF, CT = 4.7µF, and

EXT

1100ms

48.520

75 110 300

48.520

75 110 300

280

300

280

300

05ns

1000 ns

8/26

+ 18 hidden pages