Philips Semiconductors
Preliminary specification
Advanced modem/audio analog front-end
Version 1.2
GENERAL DESCRIPTION
The UCB1100 is a single chip, integrated mixed signal audio and
telecom codec. The single channel audio codec is designed for
direct connection of a microphone and speaker. The built-in telecom
codec can directly be connected to a DAA and supports high speed
modem protocols. The incorporated 10 bit analogue to digital
converter and the touch screen interface provides complete control
and readout of a connected 4 wire resistive touch screen. The 10
additional general purpose I/O pins provides programmable inputs
and/or outputs to the system.
The UCB1100 has a serial interface bus (SIB) intended to
communicate to the system controller. Both the codec input and
output data and the control register data is multiplexed on this SIB
interface.
UCB1100
TABLE OF CONTENTS
GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
KEY FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.0
FUNCTIONAL BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . 3
2.0
ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.0
ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . 4
4.0
DC ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . 5
5.0
PINOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5.1
PINLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.0
FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1
AUDIO CODEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1.1 AUDIO INPUT SPECIFICATIONS . . . . . . . . 10
6.1.2 AUDIO OUTPUT SPECIFICATIONS . . . . . . . 11
6.2
TELECOM CODEC . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.2.1 TELECOM INPUT SPECIFICATIONS . . . . . 14
6.2.2 TELECOM OUTPUT SPECIFICATIONS . . . 15
6.3
TOUCH SCREEN MEASUREMENT MODES . . . . 16
6.3.1 POSITION MEASUREMENT . . . . . . . . . . . . . 16
6.3.2 PRESSURE MEASUREMENT . . . . . . . . . . . 16
6.3.3 PLATE RESISTANCE MEASUREMENT . . . 16
6.4
TOUCH SCREEN INTERFACE . . . . . . . . . . . . . . . . . 17
6.4.1 TOUCH SCREEN SPECIFICATIONS . . . . . 18
6.5
10 BIT ADC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.5.1 SPECIFICATION OVERVIEW . . . . . . . . . . . . 21
6.6
ON CHIP REFERENCE CIRCUIT . . . . . . . . . . . . . . 21
6.6.1 SPECIFICATION OVERVIEW . . . . . . . . . . . . 21
6.7
SERIAL INTERFACE BUS . . . . . . . . . . . . . . . . . . . . . 22
6.7.1 SIB DATA FORMAT . . . . . . . . . . . . . . . . . . . . . 23
6.7.2 CODEC DATA TRANSFER . . . . . . . . . . . . . . 24
6.7.3 CONTROL REGISTER DATA TRANSFER . 26
6.7.4 AC ELECTRICAL CHARACTERISTICS . . . 27
6.8
GENERAL PURPOSE I/Os . . . . . . . . . . . . . . . . . . . . 27
6.9
INTERRUPT GENERATION . . . . . . . . . . . . . . . . . . . 27
6.10 RESET CIRCUITRY . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.0
MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.1
POWER ROUTING STRATEGY . . . . . . . . . . . . . . . . 29
8.0
CONTROL REGISTER OVERVIEW . . . . . . . . . . . . . . . . . . 30
9.0
PACKAGE OUTLINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.1
PACKAGE OUTLINE LQFP48 . . . . . . . . . . . . . . . . . . 34
10.0 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
APPLICATIONS
•
Personal Intelligent Communicators
•
Personal Digital Assistants (PDA)
•
Screen phones
•
Smart Phone and smart Fax
•
Intelligent Communicators
KEY FEATURES
•
48-pin LQFP (SOT313-2) small body SMD package and low
external component count result in minimal PCB space
requirement.
•
A 12-bit sigma delta audio codec with programmable sample rate,
input and output voltage levels, capable of connecting directly to
speaker and microphone, including digitally controlled mute,
loopback and clip detection functions
•
A 14-bit sigma delta telecom codec with programmable sample
rate, including digitally controlled input voltage level, mute,
loopback and clip detection functions. The telecom codec is
intended for direct connection to a DAA (digital access
arrangement) and includes a built-in sidetone suppression circuit.
•
A complete 4 wire resistive touch screen interface circuit
supporting position, pressure and plate resistance measurements.
•
A 10-bit successive approximation ADC with internal track and
hold circuit and analogue multiplier for touch screen readout and
monitoring of four external high voltage (7.5V) analogue voltages.
•
A high speed, 4 wire serial interface data bus (SIB) for
communication to system controller.
•
A 3.3V supply voltage and built in power saving modes make the
UCB1100 optimal for portable and battery powered applications.
1998 May 08
2
Philips Semiconductors
Preliminary specification
Advanced modem/audio analog front-end
UCB1100
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DESCRIPTION
ORDERING
CODE
PACKAGE
DRAWING
SOT313-2
Plastic low profile
quad flat package;
48 leads
UCB1100LP/X3
2.0 ORDERING INFORMATION
3.0 ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
DDMAX
V
IMAX
V
ADMAX
V
OMAX
I
IKMAX
I
OKMAX
I
OLMAX
T
stg
Supply voltage
PARAMETER
MIN
–0.5
–0.5
–0.5
–0.5
MAX
5.0
V
DD
+0.5
8.5
V
DD
+0.5
10
10
4
UNIT
V
V
V
V
mA
mA
mA
°C
DC input voltage, except AD0–3 inputs
DC input voltage AD0–3 inputs
DC output voltage
DC diode input current, all inputs
DC diode output current
Continuous output current, digital outputs
Storage temperature
–55
150
NOTES:
1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any conditions other than those described in the Absolute Maximum Rating section of this
specification is not implied.
2. This product includes circuitry specially designed for the protection of its internal devices from damaging effects of excessive static charge.
Nonetheless, it is suggested that conventional precautions be taken to avoid submitting the UCB1100 to conditions exceeding the maximum
ratings.
3. Parameters are valid over the operating ambient temperature unless otherwise specified. All voltages are with respect to the V
SSD
pin,
unless otherwise noted.
1998 May 08
4
Philips Semiconductors
Preliminary specification
Advanced modem/audio analog front-end
UCB1100
4.0 DC ELECTRICAL CHARACTERISTICS
T
amb
= 0°C to 70°C, V
SSD
= V
SSA1
= V
SSA2
= V
SSA3
= 0V, sibclk = 10MHz, audio_divisor = 12, telecom_divisor = 40.
Voltage with respect to the V
SSD
pin, unless otherwise specified.
LIMITS
SYMBOL
V
DDD
V
DDA1
V
DDA2
V
SSA2
V
SSA3
I
DDD
PARAMETER
digital supply voltage
analogue supply voltage (excl.speaker driver)
analogue supply voltage (speaker driver only)
analogue ground voltage wrt. V
SSD
analogue ground voltage wrt V
SSD
digital supply current,
full functionality
only audio codec activated
only telecom codec activated
only touch screen activated
only adc activated
no functions activated, sibclk stopped
analogue supply current,
full functionality
only audio codec activated
only telecom codec activated
only touch screen activated
only adc activated
no analogue functions activated
total speaker driver supply current
full functionality
only audio codec activated
only telecom codec activated
only touch screen activated
only adc activated
no analogue functions activated
touch screen bias voltage
maximum touch screen bias current
full scale voltage ad0–ad3 inputs
full scale input touch screen inputs
input low voltage
input high voltage
output low voltage
output high voltage
clock frequency
Operating Ambient Temperature
I
OL
=2mA
I
OH
=2mA
0.8*V
DDD
0
0
10
15
70
–0.5
0.7*V
DDD
10
7.5
7.5
0.3*V
DDD
V
DDD
+0.5
0.2*V
DDD
Note 1
19
17
19
15
15
10
Note 1, Note 2
3.8
1.5
1.7
0.4
0.5
<10
Note 1, Note 2
0.2
0.2
10
10
10
10
1.8
mA
mA
µA
µA
µA
µA
V
mA
V
V
V
V
V
V
MHz
°C
mA
mA
mA
mA
mA
µA
mA
mA
mA
mA
mA
µA
NOTES
MIN
3.0
3.0
3.0
–0.4
–0.4
TYP
3.3
3.3
3.3
0
0
MAX
3.6
3.6
3.6
0.4
0.4
V
V
V
V
V
UNIT
I
DDA1
I
DDA2
V
TSCB
I
TSCB
V
ADFS
V
TSFS
V
IL
V
IH
V
OL
V
OH
f
SIBCLK
T
amb
NOTES:
1. Indicative value only. Value will be frozen following silicon measurements.
2. Excluding connected touch screen and speaker load currents.
1998 May 08
5
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