Philips Semiconductors
Product specification
Advanced modem/audio analog
front-end
FEATURES
UCB1200
•
48 pin LQFP (SOT313) small body SMD package and low external component count results in minimal PCB space
requirement
•
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
•
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 can be directly connected to a Data Access
Arrangement (DAA) and includes a built in sidetone suppression circuit
•
Complete 4 wire resistive touch screen interface circuit supporting position, pressure and plate resistance
measurements
•
10-bit successive approximation ADC with internal track and hold circuit and analog multiplexer for touch screen
read-out and monitoring of four external high voltage (7.5V) analog voltages
•
High speed, 4 wire serial interface data bus (SIB) for communication to the system controller
•
3.3V supply voltage and built in power saving modes make the 9397 750 04055 optimal for portable and battery
powered applications
•
Maximum operating current 25 mA
•
10 general purpose IO pins
APPLICATIONS
•
Handheld Personal Computers, Personal Intelligent Communicators, Personal Digital Assistants
•
Smart Mobile Phones
•
Screen/Web Phones
•
Internet Access Terminal
•
Modems
GENERAL DESCRIPTION
The UCB1200 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 a speaker. The built-in telecom codec can directly be connected to
a DAA and supports high speed modem protocols. The incorporated analog to digital converter and the touch screen
interface provides complete control and read-out of an 4 wire resistive touch screen. The 10 general purpose I/O pins
provide programmable inputs and/or outputs to the system.
The UCB1200 has a serial interface bus (SIB) intended to communicate to the system controller. Both the codec input
data and codec output data and the control register data are multiplexed on this SIB interface.
1998 Jul 22
2
853-2052 19059
Philips Semiconductors
Product specification
Advanced modem/audio analog front-end
PINNING
SYMBOL
IO7
IO8
IO9
ADCSYNC
V
SSD
n.c
V
SSA2
SKPRN
SPRKP
V
DDA2
TOUTP
TOUTN
TEST
TINN
TINP
VREFBYP
V
DDA1
V
SSA1
n.c
MICGND
MICP
AD3
AD2
AD1
AD0
V
SSA3
TSPY
TSMX
TSMY
TSPX
n.c
V
DDD
IO0
IO1
IO2
IO3
V
SSD
RESET
SIBSYNC
1998 Jul 22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
PIN
DESCRIPTION
general purpose I/O pins
general purpose I/O pins
general purpose I/O pins
ADC synchronization pulse input
digital ground
not connected
analog speaker driver ground
negative speaker output
positive speaker output
analog speaker driver supply
positive telecom codec output
negative telecom codec output
test mode protection
negative telecom codec input
positive telecom codec input
external reference voltage input
analog supply
analog ground
not connected
microphone ground switch input
microphone signal input
analog voltage inputs
analog voltage inputs
analog voltage inputs
analog voltage inputs
analog touch screen ground
positive Y-plate touch screen
negative X-plate touch screen
negative Y-plate touch screen
positive X-plate touch screen
not connected
digital supply
general purpose I/O pins
general purpose I/O pins
general purpose I/O pins
general purpose I/O pins
digital ground
asynchronous reset input
SIB synchronization input
4
UCB1200
RESET
STATE
input
input
input
−
−
−
−
hi Z
hi Z
−
hi Z
hi Z
‘0’
hi Z
hi Z
hi Z
−
−
−
hi Z
hi Z
hi Z
hi Z
hi Z
hi Z
−
hi Z
hi Z
hi Z
hi Z
−
−
input
input
input
input
−
−
−
TYPE
(1)
I/O
C
I/O
C
I/O
C
I
C
S
(2)
−
S
O
A
O
A
S
O
A
O
A
I
C
I
A
I
A
I/O
A
S
S
−
I
A
I
A
I
A
I
A
I
A
I
A
S
I/O
A
I/O
A
I/O
A
I/O
A
−
S
I/O
C
I/O
C
I/O
C
I/O
C
S
I
C
I
C
Philips Semiconductors
Product specification
Advanced modem/audio analog front-end
UCB1200
SYMBOL
SIBDOUT
SIBCLK
SIBDIN
IRQOUT
n.c
IO4
IO5
IO6
V
DDD
Notes
PIN
40
41
42
43
44
45
46
47
48
SIB data output
DESCRIPTION
RESET
STATE
‘1’
(6)
−
−
‘0’
−
input
input
input
−
TYPE
(1)
O
C
I
C
I
C
O
C
−
I/O
C
I/O
C
I/O
C
S
SIB serial interface clock
SIB data input
interrupt output
not connected
general purpose I/O pins
general purpose I/O pins
general purpose I/O pins
digital supply
1. I/O
C
= CMOS bidirectional; I
D
= digital input; S = supply; O
A
= analog output; I
C
= CMOS input; I
A
= analog input;
I/O
A
= analog bidirectional; O
C
= CMOS output.
2. V
SSD
(pins 5 and 37) and V
SSA1
(pin 18) are connected internally within the UCB1200.
3. SKPRN/SPKRP (pins 8 and 9), TINN/TINP (pins 14 and 15) and TOUTP/TOUTN are differential pairs
4. TEST (pin 13) is connected to an internal pull-down resistor. This pin should be held LOW during normal operation
of the circuit.
5. The not connected pins (pins 6, 19, 31 and 44) are reserved for future applications and should be left floating.
6. SIBDOUT reset state is 1 until the SIB bus is running. SIBDOUT will be active once the SIB bus has started.
1998 Jul 22
5
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