BenQ March User manual

BenQ Rev1.0
1
BenQ March (D72)/Amethyst
LT Mobile Phone
Service Manual
BenQ Inc.
Wireless Business Unit
Customer Service Dep.
Tel : [phone] ext 6687
E-Mail : [email protected]

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Contents
lPreface…………………………………………………..……………1
lTheory of Operation
1.GSM system Description…………………………………………7
2.Baseband function description…………………………………12
3.Radio Frequency function description ………………………..44
lDownload
1.System requirements and setup ………………………………59
2.Function descriptions……………………………………………61
3.FAQ… ……………….……………….……………………………67
lDisassembly (Level1~Level2)………….………………………….69
lTroubleshooting
Level 1~level 2 repair………………………………………………73
Level 3~level 4 repair………………………………………………74
lReplacement parts
Exploded View (fig1~fig3)………………………………………….95
Spare parts list………………………………………………….…..98
lService Manual Feedback Form……..…………………………….99

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Preface
This service manual is for the customers who purchase of Acer
March handset . It has several main parts of our handset that include
hardware/software and simple disassembly/assembly procedure
introduction. If you don’t understand some of these sections or any
query about it please kindly use our service manual feedback form and
send it back to our Customer Service Department and we’ll response
your query as soon as possible.
Specifications
Table 1: Radio Frequency
Radio Frequency (900 MHz)
Frequency Range TX 880-915 MHz; RX 925-
960
MHz
Channel Spacing 200 KHz
Number of Channels 174 Carriers x 8 (TDMA)
Modulation GMSK
Duplex Spacing 45 MHz
Frequency Stability +/-0.1 ppm (Uplink TX)
Power Output 33 dBM Class 4 (2 W peak)
Receiver Level < -102 dBm (Wireless)
Radio Frequency (1800 MHz)
Frequency Range TX 1710-1785 MHz; RX
1805-1880 MHz
Channel Spacing 200 KHz
Number of Channels 374 Carriers x 8 (TDMA)
Modulation GMSK
Duplex Spacing 95 MHz
Frequency Stability +/-0.1 ppm (Uplink TX)
Power Output 30 dBM –0 dBM
Receiver Level < -102 dBm (Wireless)
Operating Temperature Range -10 to +55 °C

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Table 2: Voltage Operation
Voltage Operation
Li-ion BatteryDC 3.3-4.2 V
Ni-MH Battery DC 3.3-4.2 V
Table 3: Power Consumption
Power Consumption
Working Current Average < 270 mAH
Standby Current 6 +/-0.2 mAH
Talking Time* 120 ~300 min (With Ni-
MH 550
mAH)
Standby Time* 50~120 hours (With Ni-
MH 550
mAH)
DTX / DTR Yes
Table 4: Appearance
Handset Appearance
Dimensions 106 x 40 x 16 mm
Volume 68 c.c.
Handset Weight 99 g
Table 5: Basic Services Telephony (Speech)
Tele Service Emergency Call
Delivery Report
Short Message Service MT/MO
Short Message Service
Cell Broadcast
Bearer Service Data circuit duplex
asynchronous up to 14400
bit/sec

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Scope of Manual
This manual is intended for use by experienced technicians
familiar with similar types of equipment. It is intended primarily to
support electrical and mechanical repairs. Repairs not covered in the
scope of this manual should be forwarded to Motorola’s regional
Cellular Subscriber Support Centers.

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Theory of Operation
△ GSM System Description
General Cellular Concept
The cellular systems are used to provide radiotelephone service in
the frequency range 890-960 MHz. A cellular system provides higher
call handling capacity and system availability than would be possible
with conventional radiotelephone systems (those which require total
system area coverage on every operating channel) by dividing the
system coverage area into several adjoining sub-areas or cells.
Each cell contains a base station (cell site) which provides
transmitting and receiving facilities, for an allocated set of duplex
frequency pairs (channels). Since each cell is a relatively small area,
both the cell site and the radiotelephone that it supports can operate at
lower power levels than would be used in conventional systems.
Using this technique, radiation on a given channel is virtually
contained in the cell operating on that channel and, to some extent,
those cells directly adjacent to that cell.
Since the coverage area of a cell on a given channel is limited to a
small area (relative to the total system coverage area), a channel may
be reused in another cell outside the coverage area of the first. By this
means, several subscribers may operate within the same geographic
area, without interference with each other, on a single channel.
GSM Description
Unlike previous cellular systems, GSM uses digital radio
techniques. The GSM system has the following advantages over
previous analogue systems:
♦International Roaming -Due to international harmonization and
standardization, it will be possible to make and receive calls in any

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country which supports a GSM system.
♦Digital Air Interface -The GSM phone will provide an entirely digital
link between the telephone and the base station, which is, in turn,
digitally linked into the switching subsystems and on into the PSTN.
♦ISDN Compatibility -ISDN is a digital communications standard that
many countries are committed to implementing. It is designed to carry
digital voice and data over existing copper telephone cables. The GSM
phone will be able to offer similar features to the ISDN telephone.
♦Security and Confidentiality –Telephone calls on analogue systems
can very easily be overheard by the use of a suitable radio receiver.
GSM offers vastly improved confidentiality because of the way in which
data is digitally encrypted and transmitted.
♦Better Call Quality -Co-channel interference, handover breaks, and
fading will be dealt with more effectively in the digital system. The call
quality is also enhanced by error correction, which reconstructs lost
information.
♦Efficiency -The GSM system will be able to use spectral resources
in a much more efficient way than previous analogue
Systems
In the figure below, the area bounded by bold lines represents the
total coverage area of a hypothetical system. This area is divided into
several cells, each containing a cell site (base station) operating on a
given set of channels which interfaces radiotele-phone subscribers to
the telephone switching system.

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The radiotelephones themselves are capable of operation on any
channel in the system, allowing them to operate in any cell. Due to the
low power requirements for communications between radiotelephones
in a particular cell and the cell site, operating channels may be
repeated in cells which are outside the coverage area of each other.
For example, presume that cell A operates on channels arbitrarily
numbered 1 through 8, cell B operates on channels 9 through 16, cell C
operates on channels 17 through 24 and cell D operates on channels 1
through 8 (repeating the usage of those channels used by cell A). In
this system, subscribers in cell A and subscribers in cell D could
simultaneously operate on channels 1 through 8.
The implementation of frequency re-use increases the call
handling capability of the system, without increasing the number of
available channels. When re-using identical frequencies in a small area,
co-channel interference can be a problem. The GSM system can
tolerate higher levels of co-channel interference than analogue systems,
by incorporating digital modulation, forward error correction and
equalization. This means that cells using identical frequencies can be
CELL A
CHANNELS
1-8
CELL B
CHANNELS
9-16
CELL C
CHANNELS
17-24
CELL D
CHANNELS
1-8 CELL F
CHANNELS
17-24
CELL E
CHANNELS
9-16
Figure 2: Hypothetical

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physically closer, than similar cells in analogue systems. Therefore the
advantage of frequency re-use can be further enhanced in a GSM
system, allowing greater traffic handling in high use areas.
By incorporating Time Division Multiple Access (TDMA) several
calls can share the same carrier. The carrier is divided into a
continuous stream of TDMA frames, each frame is split into eight time
slots. When a connection is required the system allocates the
subscriber a dedicated time slot within each TDMA frame. User data
(speech/data) for transmission is digitized and sectioned into blocks.
The user data blocks are sent as information bursts in the allocated
time slot of each TDMA frame.
The data blocks are modulated onto the carrier using Gaussian
Minimum Shift Keying (GMSK), a very efficient method of
phase modulation.
Each time an information burst is transmitted, it may be transmitted
on a different frequency. This process is known as frequency hopping.
Frequency hopping reduces the effects of fading, and enhances the
security and confidentiality of the link. A GSM radiotelephone is only
required to transmit for one burst in each frame, and not continually,
thus enabling the unit to be more power efficient.
Each radiotelephone must be able to move from one cell to
another, with minimal inconvenience to the user. The mobile itself
carries out signal strength measurements on adjacent cells, and the
quality of the traffic channel is measured by both the mobile and the
base station. The handover criteria can thus be much more accurately
determined, and the handover made before the channel quality
deteriorates to the point that the subscriber notices.
When a radiotelephone is well within a cell, the signal strength
measured will be high. As the radiotelephone moves towards the edge
of the cell, the signal strength and quality measurement decreases.
Signal information provides an indication of the subscriber’s

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distance from the base station. As the radiotelephone moves from cell
to cell, its control is handed from one base station to another in the new
cell.
This change is handled by the radiotele-phone and base stations,
and is completely transparent to the user.
Service Area
The area within which calls can be placed and received is defined
by the system operators. (Because this is a radio system, there is no
exact boundary that can be drawn on a map.) If the telephone is
outside a coverage area, the (no service) indicator will illuminate and
calls will be unable to be placed or received. If this happens during a
conversation, the call will be lost. There may also besmall areas within
a particular service area where communications may be lost.
The radiotelephone’s identity information is held by its local GSM
system in its Home Location Register (HLR) and Visitor Location
Register (VLR). The VLR contains identity information on all local active
radiotelephones. Should you roam to another area, system or country
the radiotelephones identity information is sent to the VLR in the new
system. The new system will then check the radiotelephones details
with your home system for authenticity. If everything is in order it will be
possible to initiate and receive calls whilst in the new area.

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△ Baseband function Descriptions
1. Introduction:
March(T191) utilizes TI’s chipsets (Ulysse and Nausica) as
base-band solution. Base-band is composed with two potions:
Logic and Analog/Codec. Ulysse is a GSM digital base-band logic
solution included microprocessor, DSP, and peripherals. Nausica is
a combination of analog/codec solution and power management
which contain base-band codec, voice-band codec, several voltage
regulators and SIM level shifter etc. In addition, 56D66 integrates
with other features such as LED backlight, LCD display, vibration,
buzzer and charging etc. The following sections will present the
operation theory with circuitry and descriptions respectively.
2. Block Diagram
2.1 Ulysse (Hercules)
JAMES WANG, WEN-SHIH LIU PAGE 1 OF 2
DUAL BAND AMETHYST
BASEBAND BLOCK DIAGRAM REV 1.0
DUAL BAND AMETHYST
SRAM
1Mbit
G5
A2
B5
A1
B2
Flash
Memory
32Mbit
D7
B4
B3
D8
ARM7
RTC
PWT
PWL
UART
I2C
SPI
MEM.
INTF.
GPIO
ACT
TSP
SIM
JTAG
RIF
Voice-
band
INTF
DAI
DSP
2M
SRAM
E10
A11
B6
C2
B1
D2
D3
F4
C4
K11
J1
J3
M6
A7
C7
C8
A8
P6
M9
N8
L8
P7
K8
K7
C6
E6
E9
B11
D11
B12
B13
H10
D14
E14
D13
J14
J13
K14
G1
H1
H3
H2
F12
F13
F14
G13
G11
H12
H13
H11
D8
D9
B9
A9
NROMCS1
FDP
RNW
NFOE
NRAMCS
NBLE
NBHE
MCUEN
MCUDO
MCUDI
IO3DATA_HP_SEL
IO13ACCIN
IO0VIBRATOR
IO1BATID_DET
SCL
SDA
NRSTOUT
TXD0
RXD0
BU
BL
RTCINT
H3
D7
G3
G14
H14
VR1 VR2 VR2B VR3
RX_ON
TX_ON
DCS_T/R
GSM_T/R
BS2
PC
BS1
LE
DATA
CLK
TSPEN0
S_CLK
S_IO
S_RST
TCK
TMS
TDO
TDI
BFSR
BDR
BFSX
BDX
VCLKRX
VDX
VDR
VFSRX
DAI_RST
DAI_CLK
DAI_DI
DAI_DO
TO / FROM
OMEGA
{
TO / FROM
OMEGA
{
JTAG
TO / FROM
OMEGA{
DAI INTF {DATA BUS
DATA BUS
ADDRESS BUS
VR2
DATA BUS
ADDRESS BUS
VR2
}TO / FROM ULYSSE
LCM
CONT.
4
5
6
7 , 8
1
2 , 3
VR2
VLCD
C34
}TO EARPHONE JACK
BQ3 BUZZER
U7 BQ2
LCM BACKLIGHT
KEYPAD BACKLIGHT
BQ4 M
U15 BATID
EXTIRQ
EXTFIQ
NRESET
13MHZ
13MOUT
FROM
OMEGA
FROM U61 KEYPAD
POWER
FROM OMEGA
ULYSSEU1
VIBRATOR
X1 32.768KHZ
E11
D6
TCXOEN
ON_OFF
{
{
{
TO RF BLOCK
TO RF BLOCK
{
TO / FROM
OMEGA
ROW0~ROW3
COL0~COL4
ADDRESS BUS
VBAT
VBATBB
VBAT
U5
U6
TO OMEGA
TO U84,U90
FROM OMEGA TO OMEGA
TO OMEGA
U9
3
4
21
R72
EARPHONE JACK
TXDO
AUXI
IO3DATA_HP_SEL
IO13ACCIN
RXDO
AUXOP
U8
U10
VR2BSW
VR2BSW
MIC
SPK
VR2BSWVR2B
{
U13
M1

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2.2 Nausica (Omega)
IBIC
BUS
CONT.
C4
B3
B2
B4
B5
D4
A2
A1
B1
BSP
K5
J5
H5
G5
SPI
BCI
ADC
VRPC
F5
K6
J6
E3
E4
E5
B5
A5
E6
D6
C6
F7
F6
D7
D10
B10
BACKUP
VR1B
2.0V@50mA
VR2B
2.9V@50mA
VR2
2.9V@120mA
VR1
1.8V@120mA
VR3
2.9V@80mA
VREG
B/B
U/L
C9
C10
D8
D9
B/B
D/L
E7
E8
E9
E10
AFC
APC
TSP
VOICE
D/L
VOICE
U/L
USP
SIM REG.
3/5V
SHIFTER
F8
F9
J4
K4
H8
H9
J9
K9
J8
K8
H7
H6
G6
G7
K7
K3
D2
G9
J3
C3
C1
D1
E1
H1
H10
F1
A4
TXIP
TXIN
TXQP
TXQN
RXIP
RXIN
RXQP
RXQN
AFC
RAMP
SMADA
TPENQ
AUXOP
MICBIAS
MICIN
MICIP
AUXI
VCLKRX
VDR
VDSRX
VDX
S_CLK
S_RST
S_IO
CLK
RST
I/O
VSIM
C8
BDX
BFSX
BDR
BFSR
MCUEN0
MCUDO
MCUDI
ICTL
VCHG
VBAT
BATID
TBAT
HWID
EXTFIQ
NRESET
RTCINT
ON_OFF
PWON
VCC1
VCC2
VCC3
VBACKUP
UPR
VR1B
VR2B
VR2
VR1
VR3
OSCAS
EXTIRQ
EARPHONE_IN
SIM
SOCKET
1
3
2
4
}TO / FROM
ULYSSE
}
}TO U61
}FROM U61
TR1
ROW4
S19
EARN
EARP SPEAKER
MICROPHONE
TO U85
TO U74
}TO/FROM ULYSSE
{
TO / FROM
ULYSSE
{
TO / FROM
ULYSSE
{
FROM
BATBB
OMEGA
POWERJACK
BATTERY
CONNECTOR
U3
COINLI-ION
BATTERY
TO / FROM
ULYSSE
1
2
3
4
4
3
2
1
ICTL
VCHG
MANTEST
FUSE F1
+
_
U4
U14
FROM ULYSSE
C22
TO / FROM
ULYSSE{
D1
S1
G2
D2
G1 S2
U17
U17
JAMES WANG, WEN-SHIH LIU PAGE 2 OF 2
DUAL BAND AMETHYST
BASEBAND BLOCK DIAGRAM REV 1.0
DUAL BAND AMETHYST
U18
U16
D1
D2
D1
D2
J1
R21
R24
VR3
VBBATBB
3. Theory:
3.1 Ulysse
ULYSSE (HERCROM200) is a chip implementing the digital
base-band processor of a GSM mobile phone. This chip combines a
DSP M16L80 mega-module (LEAD2 CPU) with its program and data
memories, a Micro-Controller core with emulation facilities
(ARM7TDMIE) and an internal 2M-bit RAM memory, a clock squarer
cell, several compiled single-port or 2-ports RAM and 120K
equivalent CMOS gates.
Major functions of this chip are as follows:
3.1.1 Real Time Clock (RTC)
3.1.2 Pulse Width Tones (PWT)
The function of the PWT is to generate a modulated frequency
signal for the external buzzer.
3.1.3 Pulse Width Light (PWL)
This module allows the control of the backlight of LCD and keypad
by employing a 4096 bit random sequence.

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3.1.4 MODEM-UART
3.1.5 I2C master serial interface (I2C)
In 56D66, we employ I2C bus to control LCD module.
I2C_SCL: programmed to the fast transmission mode (400KHz)
I2C_SDA: the serial bi-directional data of the LCM controller
3.1.6 General Purposes I/O (GPIO)
Ulysse provides 16 GPIOs configurable in read or write mode by
internal registers. In 56D66, we utilize 5 of them as follows:
IO0 : to control vibrator; ‘L’: idle, ‘H’: activate vibrator
IO1 :to identify legal NiMH battery
IO3 : to control phone jack configuration; ‘L’: data cable, ‘H’:
hands-free
IO8 : to support one-wire protocol for Li-Ion battery
IO13 : to detect accessory plug-in at phone jack; ‘H’: idle, ‘L’: plug-in
3.1.7 Serial Port Interface (SPI)
3.1.8 Memory Interface and internal Static RAM
A 2Mbit SRAM is embedded on the die and memory mapped on the
chip-select CS6 of the memory interface.
3.1.9 SIM Interface
3.1.10 JTAG
3.1.11 Time Serial Port (TSP)
3.1.12 TSP Parallel interface (ACT)
In 56D66, we employ 8 of them to control RF activity.
TSPACT1: Band selection 1 (BS1)
TSPACT2: Power control enable (PC)
TSPACT3: Band selection 2 (BS2)
TSPACT4: GSM TR switch on/off (GSM_TR)
TSPACT5: DCS TR switch on/off (DCS_TR)
TSPACT8: RX VCO on/off (RX_ON)
TSPACT9: TX VCO on/off (TX_ON)
TSPACT10: Latch enable (LE)
3.1.13 Radio Interface (RIF)
3.2 Nausica (Omega)
Together with a digital base-band device (Ulysse), OMEGA is part
of a TI DSP solution intended for digital cellular telephone applications
including GSM 900, DCS 1800 and PCS 1900 standards (dual band

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capability).
It includes a complete set of base-band functions to perform the
interface and processing of voice signals, base-band in-phase (I) and
quadrature (Q) signals which support single-slot and multi-slot mode,
associated auxiliary RF control features, supply voltage regulation,
battery charging control and switch ON/OFF system analysis.
OMEGA interfaces with the digital base-band device through a set
of digital interfaces dedicated to the main functions of Ulysse, a
base-band serial port (BSP) and a voice-band serial port (VSP) to
communicate with the DSP core (LEAD), a micro-controller serial port
to communicate with the micro-controller core and a time serial port
(TSP) to communicate with the time processing unit (TPU) for real time
control.
OMEGA includes also on chip voltage reference, under voltage
detection and power-on reset circuits.
Major functions of this chip are as follows:
3.2.1 Baseband Codec (BBC)
3.2.2 Automatic Frequency control (AFC)
3.2.3 Automatic Power Control (APC)
3.2.4 Time serial port (TSP)
3.2.5 Voice band Codec (VBC)
3.2.6 Micro-controller serial port (USP)
3.2.7 SIM card shifters (SIMS)
3.2.8 Voltage Regulation (VREG)
Linear-regulation performed by several low dropout (LDO) regulators
to supply analog and digital baseband circuits.
(1) LDO R1 generates the supply voltage (2.5V, 1.8V, 1.4V and 1.2V)
for the digital core of Ulysse. In 56D66, it is programmed to 1.8V.
This regulator takes power from the battery voltage and it has a
backup through BBS system.
(2) LDO R1B generates the supply voltage 2.0V for the digital core of
OMEGA. It is supplied by the battery.
(3) LDO R2B generates the supply voltage 2.9V for the digital I/O’s of
Ulysse and Omega. It is supplied from battery voltage and has a
backup through BBS system.

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(4)LDO R2 generates the supply voltages 2.9V for Ulysse memory
interfaces I/O’s. It has a backup through BBS system.
(5)LDO R3 generates the supply voltage 2.9V for the analog
functions of OMEGA.
The backup battery switch (BBS) generates at its output an
uninterrupted power rail (UPR) of which purpose is to supply
continuously the minimum necessary circuitry of the power-control
functions either from the main battery of from the backup battery
3.2.9 Baseband Serial Port (BSP)
3.2.10 Battery charger Interface (BCI)
3.2.11 Monitoring ADC (MADC)
3.2.12 Reference Voltage / Power on Control (VRPC)
3.2.13 Internal bus and interrupt controller (IBIC)
3.3 Power Supply circuit
BGND
BGND
VR3
BGND
BGND
BGND
VR2B
BGND
BGND
BGND
VR2
VBATBB
VR1VR1B
TPL16 1
U1
ULYSSE_uBGA179
B2
C2
C3
B1
C1
D3
D2
D1
F5
E4
E2
E3
E1
F4
F3
F2
F1
G5
G4
G2
G3
G1
H1
H3
H2
H4
H5
J1
J2
J3
J4
K1
K3
K2
K4
J5
L1
L2
L3
M1
N1
M3
M2
N2
P2 N3 P3 L4 M4 N4 P4 K5 L5 N5 P5 M5 K6 M6 P6 N6 L6 K7 L7 P7 N7 M7 M8 N8 P8 L8 K8 L9 N9 P9 M9 K9 M10 P10 N10 L10 K10 P11 N11 M11 L11 P12 N12 P13 N13
M13
M12
N14
M14
L12
L13
L14
K11
K13
K12
K14
J11
J12
J13
J14
H10
H11
H13
H12
H14
G14
J10
G12
G13
G11
G10
F14
F13
F12
F11
E14
E12
E13
E11
F10
D14
D13
D12
C14
B14
C12
C13
B13
A13 B12 A12 D11 C11 B11 A11 E10 D10 B10 A10 C10 E9 C9 A9 B9 D9 E8 D8 A8 B8 C8 C7 B7 A7 D7 E7 D6 B6 A6 C6 E6 C5 A5 B5 D5 E5 A4 B4 C4 D4 A3 B3 A2
P1
A14
P14
GND
BU/PWT
VDDS2
LT/PWL
SDO/INT10n
RX_MODEM
TX_MODEM
SD_IRDA/CLKOUT_DSP
DSR_MODEM/LPG
RTS_MODEM/TOUT
CTS_MODEM/XF
SCLK/INT1n
RX_IRDA
nSCS0/SCL
RXIR_IRDA/X_A1
TX_IRDA
TXIR_IRDA/X_A4
nSCS1/X_A2
nEMU1
nEMU0
nRESPWRON
TCK
TMS
TDO
TDI
nBSCAN
EN_LMM_PWR/X_IOSTRB
IO0/TPU_WAIT
GND
IO1/TPU_IDLE
ADD0
ADD1
VDDS1
ADD2
ADD3
VDD
ADD4
ADD5
ADD6
ADD7
ADD8
ADD9
ADD10
ADD11
ADD12 ADD13 GNDLMM ADD14 IO2/IRQ4 ADD15 ADD16 ADD17 ADD18 ADD19 ADD20 VDDLMM ADD21/CK16X_IRDA IO3/SIM_RnW nCS0 GND VDDS1 nBHE/IO14 nCS1 nCS2 GNDLMM nCS3 CS4/ADD22 RnW VDD nFOE/X_A3 nBLE/IO15 nFWE/X_A0 VDDS1 DATA0 FDP/nIACK DATA1 GND DATA2 DATA3 GND DATA4 DATA5 GNDARM DATA6 DATA7 VDDARM DATA8 DATA9 DATA10
DATA11
DATA12
DATA13
DATA14
GND
DATA15
CLK13M_OUT/START_BIT
nRESET_OUT/IO7
TSPACT11/MCLK
VDDS2
SIM_RST
SIM_CD/MAS0
SIM_PWCTRL/IO5
SIM_IO
SIM_CLK
TSPACT10/nWAIT
VFSRX
VDR
VDX
GNDA1
CLKTCXO
VDDS1
VDDA1
BDX
VCLKRX
BCLKX/IO6
BFSX
BDR
BFSR
BCLKR/ARMCLK
TSPCLKX
GND
EXT_IRQ
TCXOEN
VDD
TSPDO
TSPEN0
TSPEN1
TSPDI/IO4
TSPEN2
TSPEN3/nSCS2
TSPACT0
TSPACT1
VDD
TSPACT2
GND
TSPACT3
CLK32K_OUT
GNDA2
OSC32K_OUT
OSC32K_IN
VDDS2
TSPACT4
RFEN/NOPC
GND
TSPACT5
IDDQ
MCSI_TXD/IO9
MCSI_RXD/IO10 MCSI_CLK/IO11
TSPACT6/nCS6
MCSI_FSYNCH/IO12
MCUDI
VDDLMM
MCUDO
MCUEN0
MCUEN1/IO8
MCUEN2/IO13
EXT_FIQ
TSPACT7/CLKX_SPI
ON_OFF
IT_WAKEUP/INT4n
KBC0/NFIQ
TSPACT8/nMREQ
TSPACT9/MAS1
GNDLMM
KBC1/NIRQ
KBC2/XDI_00 KBC3/XDI_01 KBC4/XDI_02 KBR0/XDI_03 KBR1/XDI_04
SDI/SDA
KBR2/XDI_05
VDDLMM
KBR3/XDI_06 KBR4/XDI_07
GND
VDDS2
VDDS1
C21 10UF
C26
0.1UF
C250.1UF
C19 2.2UF
C1710UF
C20 10UF
R22
0
R15
0
U3
OMEGA
B2 B1 C2 C3 C1 D2 D1 D3 E1 E2 E3 E4 E5 F1 F2 F3 F4 G4 G1 G2 G3 H1 H2 J1 K1
J2
K2
J3
H3
K3
J4
K4
H4
K5
J5
H5
G5
F5
K6
J6
H6
G6
G7
K7
J7
H7
K8
J8
K9
K10
A10 B10 C9 D8 D9 D10 D7 E7 E8 E9 E10 F6 F7 F8 F9 F10 G8 G10 G9 H10 H8 H9 J10 J9
A1
A2
B3
A3
C4
B4
A4
D4
D5
C5
B5
A5
E6
D6
C6
B6
A6
C7
A7
B7
A8
C8
B8
A9
B9
C10
SIO3 VS1 GRND2 UPR VR1BOUT VCC2 VR2BOUT VR2SEL VR2OUT VR2IN ICTL VCHG VBAT OSCAS TESTRESETZ REFGND VREF BGTR1 IBIAS BGTR3 BGTR2 VR1OUT BGTR4 FDBK GRND1
BGTR5
SWITCH
VBACKUP
COMP
VCC1
TDR
TEN
INT2
BDX
BFSX
BDR
BFSR
UEN
UDR
UDX
VCK
VDX
VFS
VDR
AGNDA1
AUXI
MICIP
MICIN
MICBIAS
BUZZOP
RPWON
PWON
BULIP
BULQP
BULQM
ONNOFF
RTC_ALARM
BDLIP
BDLIM
BDLQP
BDLQM
RESPWRONZ
INT1
AFC APC
DAC
AUXGND
GRND3
VCC3
VR3OUT
EARN
EARP
AUXON
AUXOP
VS2
SVDD
SRST3
VAUX
SCLK3
SCLK5
CK13M
SIO5
SRST5
LCDSYNC
ADIN1
ADIN2
ADIN3
ADIN4/TSCXP
ADIN5/TSCYP
TSCXM
TSCYM
TDO
TDI
TCK
TMS
TEST1
TEST2
TEST3
TEST4
BULIM
R54
0
+ - V
U4A
Back-upBattery
2 1
R16
0
R17
0
C15 2.2UF
2.9V@80mA
Omega/Ulysse Analog part
1.8V@120mA
Ulysse Core
2.9V@120mA
Memory
2.9V@50mA
Peripherals
(From Main Battery)
2.0V@50mA
Omega Core
The phone is mainly supplied from the main battery (VBAT)
which is divided into two routes: VBAT is for RF block, vibrator and
buzzer; VBATBB is for baseband block.
The input power (VBATBB) to Nausica is divided into 4 blocks:

BenQ Rev1.0
17
VCC1: to provide power for DC/DC and regulator R1 (VR1)
VCC2: to provide power for regulator R1B (VR1B), R2B (VR2B) and
charger pump
VCC3: to provide power for regulator R3 (VR3)
VR2IN: to provide power for regulator R2 (VR2)
NAUSICA provides five low drop-out voltage regulators.
R1 (VR1): 1.8V@50mA; to supply ULYSSE digital core, RTC,
32KHz and the internal SRAM
R2 (VR2): 2.9V@120mA; to supply 13MHz clock, external memory
devices and LCD display
R2B (VR2B):2.9V@50mA; to supply peripheral devices, I/O to
NAUSICA
R1B (VR1B): 2.0V@50mA; to supply the digital part of NAUSICA
R3 (VR3): 2.9V@80mA; to supply analog part of NAUSICA.
Among these 5 LDOs, only R1, R2 and R2B are support with
back-up mode.
The power of Ulysse is supplied by these LDOs:
VDD: supplied by VR1 and used for core logic
VDDS1: supplied by VR2 and used for I/Os to memory devices
VDDS2: supplied by VR2B and used for I/Os to Omega and
peripherals
VDDLMM: supplied by VR1 and used for Lead MegaModule (DSP)
VDDARM: supplied by VR1 and used for ARM

BenQ Rev1.0
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3.4 System power on/off Sequence
3.4.1 Power on
There are three conditions that system can power on.
-On button pushed: A falling edge is detected on PWON pin and the
debouncing time is greater than 30ms.
-Set Alarm: A rising edge is detected on RTC_ALARM (RTCINT)
-Charger plugged: VCHG > VBAT + 0.4V is detected
When these conditions occur in the power on state, the
hardware power on sequence starts:
1. Enable local oscillator OSCAS (~ 100KHz)
2. Enable band-gap (VREF and IREF)
3. Check if Main Battery voltage is greater than 3.2V
4. Enable charge pump (VAUX ~ 5.8V)
5. Enable LDO regulators (R1, R1B, R2, R2B and R3)
6. Set ON_OFF pin to ‘H’.
7. NRESET pin is set from ‘L’ to ‘H’
8. 13MHz clock oscillator is enabled (Ulysse’s task)
3.4.2 Power off in normal mode
When system is powered off in normal mode by long pressing
power-on key, the power off sequence will be executed:
1. Start watchdog timer during 150us and disable DC/DC
2. Set ON_OFF pin to ‘L’
3. Disable all the regulators
4. Disable the band-gap
5. Disable the local oscillator OSCAS
3.4.3 Power off in emergency mode
When the main battery voltage is detected lower than 2.7V, the
following sequence is executed:
1. Set INT1 (FIQ) to ‘L’
2. Start watchdog timer during 150us and disable DC/DC
3. Set ON_OFF pin to ‘L’
4. Disable all the regulators
5. Disable the band-gap
6. Disable the local oscillator OSCAS

BenQ Rev1.0
19
3.5 Memory circuit
DATA BUS U5
FLASH
U6
SRAM
ULYSSE
CE#
CE1
NROMCS1
NRAMCS
OE#
NFOE
ADDRESS BUS
RP#
WE#
FDP
RNW
OE
HB
LB
NBHE
NBLE
VCCQ
VCC
VCC
VCC
CE2
VR2
VR2
Description
Flash (U5) is a 32Mbit device, supported by VR2 and booted from
top. The total 32Mbits are divided into two sections: 24Mbits is used
for software program code and 8Mbits is used for EEPROM data. The
access time of Flash is 100ns.
SRAM (U6) is a 1Mbit device, supported by VR2. The access time of
SRAM is 70ns.

BenQ Rev1.0
20
3.6 Display circuit
VR2
BGND
NRSTOUT
I2C_SDA
I2C_SCL
R27 1K
C33
1UF(0603)
C32
C(0603)
J2
LCD
1
2
3
4
5
6
7
8
9
10
VLCD
VSS
VSS
SCL
SDA
/RES
VDD2,3
VDD1
X
X
C50
39PF
C51
39PF C34
1UF(0805 Z5U 16V)
2.9V
400KHz
7.6V
From U1/Ulysse
Description
Display circuit is composed of a 98*64 resolution LCD module and
a display supply voltage bypass capacitor C34. The power of LCDM is
supplied from VR2. It is controlled by U1 via I2C bus: SCL and SDA.
The data rate of I2C is programmed to 400KHz. NRESTOUT is low
active to reset all LCD registers. The LCD Module is adopted with
COG (chip on glass) type, and default display supply voltage VLCD at
normal temperature is 7.6V. R27 is used for ESD protection and C50,
C51 are used for radiation suppression.

BenQ Rev1.0
21
3.7 Vibrator circuit
BGND
VBAT
IO0VIBRATOR
R49
15
R46
1K
A
-
+
M1
LA4-432
12
BQ4
UMT4401
2
1
3
D14
DAN222
2 1
3
3.6V
94mA
1.2V
From U1/Ulysse
Description
To enable vibration, Ulysse sets IO0VIBRATOR to ‘H’to activate
the motor. R46 and R49 are used to make BQ4 working in saturation
area. D14 is used to feedback EMF. Under the condition of VBAT =
3.6V, the average voltage across the motor is about 1.2V and drain
current is around 94mA.