Sony FF031021 User Manual

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SEM/BMDES (RODNEY WILLIAMS)

1/198 17-5/FCP 101 3317 Uen A

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EDGE Daughter Card User Manual

The information contained in this document is the proprietary information of Sony Ericsson Mobile Communications International. The contents are confidential and any disclosure

to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of Sony Ericsson Mobile Communications International, is strictly prohibited. Further, no portion of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, without the prior written consent of Sony Ericsson Mobile Communications International, the copyright holder.

Sony Ericsson Mobile Communications International publishes this document without making any warranty as to the content contained herein. Further Sony Ericsson Mobile Communications International reserves the right to make modifications, additions and deletions to this document due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and without notice. Such changes will, nevertheless be incorporated into new editions of this document. All rights reserved.

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Note: Any hard copy of this document is for reference only. Due to template and application dependencies the header and footer may fail to display correct data. It is the responsibility of the user to ensure that they have a correct and valid version. Any outdated hard copy is invalid and must be removed from possible use.

Contents

Part 1 : Overview ...............................................................................................3

1 Introduction..........................................................................................4

1.1 Target Users........................................................................................5

1.2 Prerequisites........................................................................................5

1.3 Notation ...............................................................................................5

2 EDGE Wireless Modem.......................................................................6

2.1 EDGE Wireless Modem in a Communication System .........................6

2.2 Functional Block Diagram....................................................................8

2.3 Features ..............................................................................................9

2.3.1 Mobile Station Characteristics .............................................................9

2.3.2 Environmental Conditions..................................................................12

2.4 SIM Card ...........................................................................................12

2.5 Other Features ..................................................................................12

2.6 Precautions........................................................................................12

Part 2 : Daughter Card Description .................................................................13

3 Mechanical Description .....................................................................14

3.1 Physical Detail ...................................................................................14

4 System Interface................................................................................16

4.1 Overview............................................................................................16

4.1.1 System Connector .............................................................................16

4.2 Electrical Interface Detail Format.......................................................18

5 Electrical Interface .............................................................................19

5.1 Power Interfaces................................................................................19

5.1.1 VIN.....................................................................................................19

5.1.2 3V3 ....................................................................................................21

5.1.3 VREF .................................................................................................21

5.1.4 GND...................................................................................................22

5.2 Status Interfaces................................................................................23

5.2.1 UVP ...................................................................................................23

5.2.2 OVP ...................................................................................................24

5.2.3 RI .......................................................................................................24

5.2.4 LED....................................................................................................25

5.2.5 VREF .................................................................................................25

5.3 Data Communication and Control Interfaces.....................................26

5.3.1 USB Interface ....................................................................................26

5.3.2 P_EN .................................................................................................26

5.4 ANTENNA CONNECTOR .................................................................27

6 Rudimentary Circuit Functions ..........................................................28

6.1 Power On Sequence .........................................................................28

6.2 Power Off Sequence .........................................................................29

6.3 USB communications timing..............................................................29

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Part 1 : Overview

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1 Introduction

The EDGE Daughter Card product is a custom product, developed for the host equipment customer.

The EDGE Daughter Card is a total solution designed as an add-in option for integrators of the host equipment. The Daughter Card comprises of several component parts:

• EDGE wireless modem, which is the wireless enabling circuitry integrated on to the

Daughter Card PCB together with its mechanical RF shielding

• RF connector, which provides physical connectivity between the Daughter Card and

the antenna which is integrated in to the notebook mechanical housing

• Voltage regulation circuitry, which converts raw unregulated power from the host

battery to the core regulated voltage to the EDGE wireless components

• System connector, which provided the data, control, power and status interface

between the host and the wireless modem

• SIM connector, a combined connector and retention device for the users Subscriber

Identity Module (SIM) card

EDGE WIRELESS

CIRCUITRY

DAUGHTER

CARD

VOLTAGE

REGULATION

SYSTEM

CONNECTOR

RF ANTENNA

RF ANTENNA CONNECTOR

CONNECTOR

SIM

CONNECTOR

Figure 1-1 EDGE Daughter Card Component Parts

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1.1 Target Users

The EDGE Daughter Card solution is specifically for the host equipment.

1.2 Prerequisites

Integration of the EDGE Daughter Card will be performed at facilities under the host equipment customer’s management. All necessary integration instruction, driver software and user documentation will be provided. No special pre-requisite knowledge is necessary.

1.3 Notation

This document describes a custom solution for the host equipment. The Daughter Card product is defined through a cooperative partnership between the host equipment customer and Sony Ericsson Mobile Communications (SEMC).

EDGE (Enhanced Data rate for GSM Evolution) is the wireless-enabling technology.

The EDGE Daughter Card is a PCB assembly with the components described on the previous page integrated on to the board. The complete assembly is reffered in this document as the the host equipment DC (DC=Daughter Card ).

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2 EDGE Wireless Modem

2.1 EDGE Wireless Modem in a Communication System

Figure 2-1 illustrates the main blocks of a wireless communication system using the

EDGE Daughter Card embedded in the host equipment device. It also shows the communication principles of the system. The definitions in the figure, as used elsewhere in this manual, are in accordance with the recommendations of GSM 07.07.

• The MS (mobile station) represents the EDGE Daughter Card modem plus SIM card.

• The modem excluding SIM card, is known as the ME (mobile equipment).

• The TE (terminal equipment) is a micro-controller and is a part of the application.

Wireless Communications System

Host Equipment

GSM Network

AT commands to control MS

MS

TE

(DTE)

MS Status, responses

MS

(EDGE

MODEM)

Figure 2-1 Main Blocks in a Wireless System

In accordance with the recommendations of ITU-T (International Telecommunication Union - Telecommunications Standardisation Sector) V.24, the TE communicates with the MS over a serial interface. In this case this is the Universal Serial Bus (USB).

The functions of the EDGE modem follow the recommendations provided by ETSI (European Telecommunications Standards Institute) and ITU-T.

ETSI specifies a set of AT commands for controlling the GSM/E-GSM element of the modem; these commands are supplemented by Sony Ericsson specific commands.

Figure 2-2 illustrates the interface between the Daughter Card and the the host equipment application. Each interface signal is described in Section 3.

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HOST EQUIPMENT

HOST

HOST EQUIPMENT

HOST

Power

TE

(DTE)

Communication

Control

Status

SYSTEM CONNECTOR

Antenna

MODEM)

Voltage

Reg

MS

(EDGE

Reg

SIM

Figure 2-2Figure 2-2 Interface between Daughter Card and Application

Note that ITU-T standards define TE and TA as DTE (Data Terminal Equipment) and DCE (Data Circuit Terminating Equipment) respectively.

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2.2 Functional Block Diagram

A function representation of the EDGE duaghter card is included in the figure below.

DAUGHTER CARD

UART

SIM INTERFACE

EDGE MODULE

DMA

Arbiter

JTAG

ARM926EJTeakLite

XRAM

DROM

DSP

CACHE

YRAM

Arbiter

Shared

Memory

External

Memory

External

Memory

SIM INTERFACE

REG

VOLT

LEVEL

SHIFTER

SIM

Bridge

Coding

Channel

Bridge

USB

GPIO

UART

PROCESSOR BUS

VOLTAGE REGULATO RS

Boot

ROM

Power

Control

Interrupt

VOLTAGE REGULATO RS

Mngmt

VOLT

SYSTEM CONNECT OR

SWITCHING

REGULATOR

VPA

OV &

SCCT

PROTECTION

USB LED

POWER

POWER STATUS

PROM

MEMORY

GSM

Timer

PRAM

A5

Accel

Viterbi

Control

Encrypt

Interrupt

Equalizer

Power

Control

BASEBAND ASIC

XTAL

32kHz

INTEL

32kHz

RD38F2030W0Z

RF TRANSCEIVER ASIC

RX SAW

FILTERS

ANTENNA

CONNECTOR

Timer

PLL

State

TX/RX

Machine

VCXO

13MHz

:2

90°

:4

90°

muRata

LMSP54JA-238

Burst

Serial

Buffer

Register

AFC

DAC

Mod

DAC

MOD

Contr

Serial

PLL

:4

90°

VPA

BALUN

PA limiter

ANT SWITCH

RF

Port

AFC

GSM

PA

AGC

Burst

Buffer

D-S

ADC

PGA

RFMD

RAM

Register

DAC

AGC

:2

90°

PMB2259

DC+ DRIVER

bias

RF3145

BROADCOM BCM213 2

PA

DAC

DACPADAC

LOOP FILTER

INFINEON PMB6258

fixed VAPC

SWIT CH

MAX4695

RF

Figure 2-3 EDGE Daughter Card Functional Block Diagram

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2.3 Features

The EDGE modem performs a set of telecom services (TS) according to GSM standard phase 2+, ETSI and ITU-T. The functions of the modem are implemented by issuing AT commands over a serial interface.

2.3.1 Mobile Station Characteristics

The EDGE modem can be configured for single, dual, triple and quad band GSM functionality. The quad band characteristics of the EDGE modem are shown in the following table.

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EDGE MODEM

Frequency range (MHz)

Channel spacing 200kHz

Number of channels

Duplex spacing 45MHz 95MHz 80MHz

GSM/G

Modulation

PRS

EDGE 8-PSK

Nom. TBD Tx phase accuracy (burst)

Max. <5° rms phase error ; <20° max peak phase error

100KH

z

Tx Spectrum Due to Modulation

200KH

z

250KH

z

400KH

z

100KH

z

Tx Spectrum Due to Switching Transients

200KH

z

250KH

z

400KH

z

Receiver sensitivity (ANT pin)

Transm itter output power (ANT conn)

GS M

ED GE

Class Class 4 Class 1

Nom. +33dBm +30dBm

Class Class E2 Class E2

Nom.

GSM8 50

E-GSM900 GSM1800 GSM1900

TX: 824849

RX:

TX: 880-915

RX: 925-960

TX: 1710-1785

RX: 1805-1880

TX: 1850-1910

RX: 1930-1990 869894

123 x 8 (TDMA) 173 x 8 (TDMA) 373 x 8 (TDMA) 298 x 8 (TDMA)

GMSK

<+0.5dB

<-30dB

<-33dB

<-60dB

<-23dBm

<-26dBm

<-32dBm

<-36dBm

<-

102dB

<-102dBm <-102dBm <-102dBm

m

+27dBm +26dBm

<-

Receiver sensitivity

Nom.

104d

Bm

(ANT connector)

Max. <-102d

Bm

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Rx Intermodulati

f

1

-49dBm

on

F

= 2f1-f2;

|f

0

2–f1

| =

f

2

-49dBm

800KHz

GPRS operation Class 10

Note that the number of frequency bands available will be dependant upon the factory configuration. The available bands will be determined by customer requirements.

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2.3.2 Environmental Conditions

The DC will support the following environmental conditions

Temperature Range (Full GSM Specification)1 -10oC to +55oC

Temperature Range (Operational) 2 -20oC to +65oC

Storage Temperature Range -20°C to +75°C

Table 2.3-1 Environmental Conditions

Notes

1. Full compliance to Type Approval and Regulatory Approval requirements between these temperature ranges

2. Design Verification Testing (DVT) and Operational compliance between these temperature ranges.

2.4 SIM Card

An external SIM card with 3V or 1.8V technology, can be connected to the modem via the SIM interface pins.

2.5 Other Features

The EDGE modem supports a number of additional features including

• 07.10 multiplexing (normal mode)

• SIM application tool kit

2.6 Precautions

The EDGE modem device is ESD protected up to 4K V contact and 8K V air discharge. It is recommended that integrators follow electronic device handling precautions when working with any electronic device system to ensure no damage occurs to the host or the radio device.

The EDGE modem is integrated on to the daughter card. When the card is mounted in the host it is the responsibility of the integrator to ensure that static discharge protection beyond the voltages specified above are designed in to the host product. If exposed, the antenna is a vulnerable contact point for ESD.

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Part 2 : Daughter Card Description

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3 Mechanical Description

3.1 Physical Detail

Dimensional details given here are for reference only. For mechanical design data, please refer to the mechanical outline drawing 151 88 - KRD 104 1025/2.

WIRELESS

MODEM

MODEM CIRCUIT

CIRCUIT

(SHIELDED)

SYSTEM CONNECTOR

Figure 3-1 Layout Detail (reference only)

RF CONNECTOR

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Figure 3-2 EDGE Daughter Card Primary Side View

Figure 3-3 EDGE Daughter Card Underneath View

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4 System Interface

4.1 Overview

4.1.1 System Connector

All of the systems interface signals flow through a single connector; power, ground, data, cotrol, status and GPIO.

Electrical connections to the modem are made through a 24 pin low insertion force (LIF) vertical SMT mount FFC or FPC cable receptor. The connector is a single sided contact type, for example the AVX Elco part 04-6244-024-011-800.

Connector type NON-ZIF (LIF) ST SMT

Contact Single

Profile Height (mm) 4.10

Number of Contacts 24

Current Rating 0.4A Max.

Voltage Rating 50V Max.

Dielectric withstanding voltage 200Vrms

Contact Material Phosphor bronze Tin-Plated

Insulator material Heat resistant plastic

Operating temperature 40ºC~+85ºC

FFC/FPC thickness 0.3±0.05

Table 4.1-1 Connector Characteristics

DATUM MARK

PIN 1

(DATUM PIN)

DETAIL A

11.5

Figure 4-1 Connector Detail

12.6

PIN 24

DETAIL A

0.2 ±0.05

0.5 TYP

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Pin Name Function

1 USB_DN USB differential (-) line

2 USB_DP USB differential (+) line

3 VREF Modem logic voltage reference output from daughter card

4 OVP Over voltage protection output from daughter card

5 SPARE

6 SPARE

7 SPARE

8 GND Ground

9 GND Ground

10 GND Ground

11 GND Ground

12 GND Ground

13 GND Ground

14 VIN Voltage input from host application

15 VIN Voltage input from host application

16 VIN Voltage input from host application

17 VIN Voltage input from host application

18 VIN Voltage input from host application

19 VIN Voltage input from host application

20 RI Ring Indicator output from daughter card

21 3V3 Application reference voltage input to daughter card

22 LED Pulsing LED output from daughter card

23 UVP Under voltage & short circuit protection output from daughter card

24 P_EN Power ON enable input to daughter card

Table 4.1-2 Pin List

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4.2 Electrical Interface Detail Format

Details of each electrical interface is contained in paragraph 5 (beginning page 19). The description of each interface follows a common format. An example is shown below:

Interface Name

This is the name of the interface; usually this is the actual name found in the pin list;

sometimes this is a collective name for a number of signals, such as the example shown here for a UART.

Function:

This identifies the basic function of the interface; some interfaces are grouped

according to their functional sub-class.

Description:

The description contains a basic overview of the interface and its functional

relationship with the host.

Pin Numbers:

All pin numbers associated with the interface are listed; these will not necessarily

be in numerical order but may be arranged to coincide with signal name list.

Signal Names:

All sigal names associated with the interface exactly as shown in the pin list; the

signal names also contain information on signal flow direction.

If not used:

This gives specific details, for each signal, of how to terminate the physical

connection if it is not required by the host; failure to observe this convention may result in unstable operation of the EDGE modem. (This may not be necessary in the host application since all signals have a defined function).

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5 Electrical Interface

This section describes each signal line of the electrical interface between the EDGE modem and the host equipment application. A summary of the function of each signal is provided, together with any additional relevant information.

Signals are described from the perspective of the EDGE modem and Daughter Card circuitry. Consequently signals described as input are inputs to the modem, driven by the host [host the host [modem arrow [modem modem circuitry is not directly involved, or where additional interface circuitry resides between the host and the modem.

Signals which are pulled internally are identified in parentheses beside the signal name as either (PU)=Pulled Up or (PD)=Pulled Down. Signals with no designation are not pulled either way.

⇒modem]. Likewise, signals described as output are driven by the modem in to

⇒host]. Bi-directional signal flow (I/O) is indicated by a double-headed

⇔host]. In some instances the [daughter card] will be identified if the

5.1 Power Interfaces

This section describes the power, ground, and other signals that control or indicate power states.

• VIN

• 3V3

• VREF

• GND

5.1.1 VIN

Function: Daughter card power supply

Description: Primary voltage supply to switching regulator (5.5 to 20.0V).

Pin Numbers: 14, 15, 16, 17, 18, 19

Signal Names: VIN [host

If not used: Required

⇒daughter card]

Details:

Power provided by the host will range from 5.5V minimum to a maximum 20.0V, dependent upon the battery discharge state. The Daughter Card has on board regulation which regulates the supply range to a steady 3.6V by means of a switching regulator rated at 3A max.

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Typical Electrical Characteristics:

Parameter Condition Low Mid High Unit

Voltage 5.5 7.4 20.0 V

Transmit mode Power Consumption (worst case)

Peak* GSM850

2-slot TX

average GSM850

1880 1500 950 est

450 340 145 est

2-slot TX

Idle mode Power Consumption

average

DRX 2 9.9 7.6 3.8 est mA

(worst case)

*Peak current consumption is an instantaneous value which occurs during a TDMA transmitter burst.

Table 5.1-1: VIN Electrical Characteristics

mA

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5.1.2 3V3

Function: Daughter card reference voltage

Description: Host reference to protection circuit & USB (3.3V)

Pin Numbers: 21

Signal Names: 3V3 [host

If not used: Required

Details:

The host supplies a 3.3V regulated supply to the Daughter Card for two primary functions:

• reference supply for the undervoltage / short circuit protection circuitry

• input for the USB interface

Electrical Characteristics:

Parameter Condition Min Nom Max Unit

Voltage 3.30 V

Ripple 100 mV

5.1.3 VREF

⇒daughter card]

Function: Voltage Reference

Description: Core digital voltage reference from modem.

Pin Number: 3

Signal Name: VREF [modem

⇒host]

If not used: Required

Details:

VREF is supplied as a reference voltage from the modem. This reference is the modem’s core digital supply voltage at a nominal 2.80V.

The interface is capable of sourcing 200uA and is intended primarily for situations where host interface circuitry is required to be level shifted to maintain wireless modem signal level compatibility. If more current is required by the host, a current amplifier must be implemented.

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This signal can also be used to indicate whether the wireless modem is powered on or not. A high level (2.7V to 2.9V) indicates that the modem is powered on. A low level (<0.5V) indicates that the modem is powered off.

All digital logic, except the SIM interface, is characteristic CMOS logic operating at VREF.

Electrical Characteristics:

Parameter Condition Min Typ Max Unit

VREF output voltage

inactive 0.3 0.5 V

active 2.70 2.80 2.90 V

VREF output current I

Table 5.1-2: VREF Electrical Characteristics

OUT

200 uA

5.1.4 GND

Function: Ground

Description: Modem common rail

Pin Numbers: 8, 9, 10, 11, 12, 13

Signal Name: GND

If not used: Required

Details:

Return path for all currents.

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5.2 Status Interfaces

Status interfaces indicate or control status features of the modem.

• UVP

• OVP

• RI

• LED

• VREF

5.2.1 UVP

Function: Under voltage protection

Description: Status indicator to host of potential malfunction in Daughter Card

circuitry

Pin Number: 23

Signal Name: UVP (PD) [daughter card

⇒host]

If not used: Required

Details:

The Daughter Card has FET circuitry which uses 3V3 as a reference, driving an output to the host indicating the voltage condition of the of VBAT (the modem supply voltage). A resistive divider connected to VBATT presents a very low V

to the UVP transistor. This

be

presents a steady state low voltage output under normal VBAT conditions with external pulldown circuitry. In the event of a short circuit or high current fault condition on the Daughter Card, the voltage drop from the switching regulator will bias the UVP transistor on and present a high output to the host equipment monitoring circuit.

The UVP signal should be pulled low by the application circuit for correct function.

Electrical Characteristics:

Parameter Condition Min Typ Max Unit

UVP output voltage

Normal 0.5 V

Fault 3.3 V

Table 5.2-1: UVP Electrical Characteristics

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5.2.2 OVP

Function: Over voltage protection

Description: Status indicator to host of potential malfunction in Daughter Card

circuitry

Pin Number: 4

Signal Name: OVP (PU) [daughter card

If not used: Required

Details:

The OVP signal is simply an output from the main onboard regulator. In it’s operational state under normal functional conditions this will output 3.6V nominal

Parameter Condition Min Typ Max Unit

UVP output voltage

Table 5.2-2: OVP Electrical Characteristics

5.2.3 RI

Function: Ring Indicator

⇒host]

Normal 3.6 V

Fault 3.7 V

Description: Alert signal from the modem to indicate an incoming SMS, or

unmasked unsolicited response

Pin Number: 20

Signal Name: RI [modem

⇒host]

If not used: Leave open

Details:

Ring Indicator is essentially a wake-up call from the modem to the host application to signal one of two events:

• an in-coming message (SMS).

• an unmasked unsolicited response/result code.

For the EDGE modem the Ring Indicator is implemented as a GPIO interface within the EDGE baseband device.

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A falling edge indicates an alert or message. The signal remains low for a period of time before going high. An SMS-page or unsolicited response/result code generates one pulse (the length is configurable using an AT command)[TBC].

The ring indicator is implemented on the daughter card as an open collector transistor output to allow the host the convenience of driving the host equipment circuitry.

5.2.4 LED

Function: LED

Description: LED-signal indicating a status change

Pin Number: 22

Signal Name: LED [modem

⇒host]

If not used: Leave open

Details:

The LED is implemented on the Daughter Card as an open collector transistor output which providesa driver level interface to an LED acting as a status indicator for the user. The LED output can be made to blink at a rate pre-determined by modem software.

5.2.5 VREF

The function of VREF is already described in 5.1.3. This interface can be used as a status indicator to the host that the modem is still powered. VREF is present whilst the modem is powered and is removed upon the completion of the modem power down. This feature can be useful in the event of a communications lock-up between the host and the daughter card.

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5.3 Data Communication and Control Interfaces

The serial data and control interfaces consist of the following :

• USB

• P_EN

5.3.1 USB Interface

Function: USB data communication port

Description: USB transmit and receive port for data communication between

modem and host.

Pin Numbers: 1, 2

Signal Names: USB_DP (2) [modem

If not used: Required

Details:

Power to the USB interface is provided by the 3V3 input from the host.

5.3.2 P_EN

Function: Power Enable

Description: Modem power enable control from host

Pin Numbers: 24

Signal Names: P_EN [host

If not used: Required

USB_DN (1) [modem

⇒daughter card]

⇔host] ⇔host]

Details:

The power enable signal is provided from the host application and is routed to the switching regulator shutdown input and also to the REG_EN (regulator enable) pin on the modem. Assertion of this pin will initiate power up. The P_EN pin is active high and has to be maintained continually in order to keep the modem powered.

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5.4 ANTENNA CONNECTOR

Function: Antenna connector

Description: 50 ohm wireless antenna connection.

Pin Numbers: N/A

Signal Names: ANTENNA

If not used: Required

Details:

The antenna interface to the modem is routed to a low profile coaxial connector on the daughter card. The antenna connector has a nominal impedance of 50 ohms and a maximum frequency rating of 2.5GHz.

IMPORTANT NOTE: FCC Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

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6 Rudimentary Circuit Functions

This section contains some rudimentary circuit functions for the sequencing of powering the modem up and down.

6.1 Power On Sequence

This sequence illustrates the power on procedure.

Figure 6-1 Power On Sequence

Sequence Detail:

1 VIN and 3V3 are supplied to the modem by the host. These two voltages can be

supplied simultaneously when the Daughter Card is required to be powered on. Both voltages must be present before the power on sequence is initiated for the Daughter Card to function correctly.

2 Once VIN and 3V3 voltages are applied the host can enable power up by

asserting power enable signal P_EN. The power up process will begin.

3 VREF may be used as an indicator that the modems regulators are powered.

is typically less than 70 ms

t

POn

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6.2 Power Off Sequence

This sequence illustrates the power off procedure.

Figure 6-2 Power Off Sequence

Sequence Detail:

1 The “AT+CFUN=4” instruction is sent from the host application to the modem in

order to initiate a deregistration sequence.

2 The modem responds to the request with an ‘OK’ to indicate that deregistration

is completed. Deregistration from the network can take from 3-30 seconds. After de-registration has been acknowledged the host application may remove P_EN.

3 The switching regulator output capacitor will gradually discharge until the modem

regulators threshold is exceeded. and power down will be complete. VREF may be used as indicator of complete shut down.

4 When the modem has successful shutdown, and VREF has fallen bellow 0.5V

then the host may safely remove VIN and 3V3 at any time. However the supplies can remain active without increasing current consumption (typically <25uA).

6.3 USB communications timing

This sequence illustrates USB initialization.

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1. The startup sequence begins with the completion of the power up ramping of the VREF signal as described in Power On Sequence.

2. The D+ signal is brought high with the power up of the USB block in the baseband circuitry. This produces the J state indicating to the USB host that a device is attaching.

3. A host initiated SE0 begins the USB protocol transactions. A power up summary of USB transactions is shown for example.

Transactions by Device:

#Transactns Acknowledgement Bytes

Addr Endp Type Total Error ACK NAK None Attempt Success

0 0 SETUP 4 0 4 0 0 32 32 0 0 IN 4 0 4 0 0 36 36 0 0 OUT 2 0 2 0 0 0 0

3 0 SETUP 7 0 7 0 0 56 56 3 0 IN 7 0 7 0 0 132 132 3 0 OUT 6 0 6 0 0 0 0

4 0 SETUP 3 0 3 0 0 24 24 4 0 IN 3 0 3 0 0 27 27 4 0 OUT 2 0 2 0 0 0 0

4 2 IN 7164 0 3 7161 0 63 63 4 2 OUT 2 0 2 0 0 39 39

Control Transfers by Device:

Addr Endp Packet# Dir Type Recipient Request Value Index Length

0 0 336 D->H Standard Device GET_DESCRIPTOR 256 0 64 0 0 426 H->D Standard Device SET_ADDRESS 3 0 0 0 0 874 D->H Standard Device GET_DESCRIPTOR 256 0 64 0 0 904 H->D Standard Device SET_ADDRESS 4 0 0

3 0 472 D->H Standard Device GET_DESCRIPTOR 256 0 18 3 0 481 D->H Standard Device GET_DESCRIPTOR 512 0 9 3 0 490 D->H Standard Device GET_DESCRIPTOR 512 0 255 3 0 670 D->H Standard Device GET_DESCRIPTOR 256 0 18 3 0 679 D->H Standard Device GET_DESCRIPTOR 512 0 9 3 0 688 D->H Standard Device GET_DESCRIPTOR 512 0 39 3 0 697 H->D Standard Device SET_CONFIGURATION 1 0 0

4 0 950 D->H Standard Device GET_DESCRIPTOR 256 0 18 4 0 959 D->H Standard Device GET_DESCRIPTOR 512 0 9 4 0 968 H->D Standard Device SET_CONFIGURATION 1 0 0

Eye Diagram for Full Speed USB signaling.

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