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PDF UPD9930G-22 Data sheet ( Hoja de datos )
| Número de pieza | UPD9930G-22 | |
| Descripción | LINEAR CODEC FOR DIGITAL CELLULAR TELEPHONE | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD9930
LINEAR CODEC FOR DIGITAL CELLULAR TELEPHONE
The µPD9930 is a +3 V single power operation, low power consumption linear CODEC LSI developed for digital
cellular telephone use.
CODEC has a wide dynamic use.
This IC also features a microphone/receiver amplifier, a tone generator, DAI (Digital Audio Interface: conforming
to GSM11.10), and a power-saving function. These functions can be controlled by microcontroller.
In addition, 21 mW (TYP.) low power consumption is enabled during 3 V operation.
FEATURES
• +3 V single power supply
• Low power consumption
In operation: 7 mA (TYP.) (VDD = 3 V)
In stand-by mode: 50 µA (TYP.) (VDD = 3 V)
• CODEC
• 13-bit precision linear coding
• Transmission level can be controlled by microcontroller.
• Analog input/output funciton
• Low noise microphone amplifier
• High output receiver amplifier
Piezo-electric receiver can be directly driven.
Gain canbe controlled by microcontroller.
• On-chip amplifier for accessory input/output
• Tone generator
• Frequency, generating pattern and gain can be controlled
by microcontroller.
• DTMF generation function
• Various service tone generation function
• GSM triple tone generation function
• Desired tone frequency can be registered (0.3 to 3.4 kHz)
• DAI
• Conforming to GSM11.10
• Test mode can be set by terminal or microcontroller
command.
• Stand-by mode
• Rise time at time of stand-by clearing: 30.5 ms (TYP.)
• Master clock generation PLL (external clock input: 8 kHz)
• Tone interrupt pattern output function
• Ringer output function
ORDERING INFORMATION
Part Number
µPD9930G-22
Package
44-pin plastic QFP (10 × 10 mm)
The information in this document is subject to change without notice.
Document No. S11616EJ2V0DS00 (2nd edition)
(Previous No. IC-3342)
Date Published November 1996 N
Printed in Japan
The mark shows major revised points.
©
1994,1996
1 page  
CONTENTS
µPD9930
1. PIN FUNCTIONS ........................................................................................................................... 6
1.1 LIST OF PIN FUNCTIONS ..................................................................................................................... 6
1.2 PIN EQUIVALENT CIRCUIT .................................................................................................................. 8
2. BLOCK FUNCTIONS ..................................................................................................................... 9
2.1 CODEC .................................................................................................................................................... 9
2.1.1 Audio Codec .............................................................................................................................. 9
2.1.2 Audio Analog Input .................................................................................................................. 9
2.1.3 Audio Analog Output ............................................................................................................. 10
2.1.4 Audio Digital Accessory Output ........................................................................................... 11
2.1.5 Audio Digital Signal Processor ............................................................................................ 11
2.1.6 Power Up/Down Control ........................................................................................................ 12
2.1.7 Microcontroller Interface ....................................................................................................... 18
2.1.8 DSP Interface .......................................................................................................................... 19
2.1.9 DAI (Digital Audio Interface) ................................................................................................. 22
3. TONE INTERVAL OUTPUT FUNCTION (TIMER TERMINAL) ................................................. 29
4. INTERNAL CONTROL FUNCTIONS ...........................................................................................30
4.1 SEND/RECEIVE GAIN CONTROL ...................................................................................................... 30
4.1.1 Voice Send Analog Gain/Receiver Amplifier 2 Control Register (TXGCR) .................... 32
4.1.2 Voice Receive Analog Gain Control Register (RXGCR) ................................................... 33
4.1.3 Voice Send/Receive Digital Gain Control Register (DGGSR) .......................................... 35
4.2 DIGITAL INPUT/OUTPUT CONTROL ................................................................................................. 37
4.2.1 Digital Signal Processing Control Register (DSPCR) ....................................................... 38
4.3 TONE CONTROL .................................................................................................................................. 40
4.3.1 Tone Frequency Selection Register (FRQSR) .................................................................... 43
4.3.2 Expanded Tone Registers (EXPR1, EXPR2) ....................................................................... 45
4.3.3 Tone Control Register (TONCR) ........................................................................................... 47
4.3.4 Tone Gain Control Register (TNGCR) ................................................................................. 48
4.4 TEST MODE CONTROL ...................................................................................................................... 50
4.4.1 Test Control Register (TSTCR) ............................................................................................. 52
5. ELECTRICAL CHARACTERISTICS ............................................................................................53
6. APPLIED CIRCUIT EXAMPLE .................................................................................................... 73
7. PACKAGE DRAWINGS ............................................................................................................... 74
8. RECOMMENDED SOLDERING CONDITIONS ......................................................................... 75
5
5 Page 
µPD9930
2.1.4 Audio Digital Accessory Output
(1) Ringer output (RINGER pin)
• Outputs rectangular waves of the same signal frequency as tone signal frequency.
• The output is controlled by turning off power to the output buffer with a control register.
Figure 2-3 RINGER Output
RAUXO
(Tone output)
RINGER
The RINGER signal tends to bounce when the tone output (RAUXO) signal crosses its zero level, and this
tendency increases as the tone output gain decreases (lower than 0 dB).
When using RINGER pin, tune the tone output gain by TNGCR (Tone gain control register) to 0 dB.
(2) Timer (tone interval) output (TIMER pin)
Outputs rectangular waves of the same pattern as the tone signal interrupt pattern. This is used to make the
LED blink in synchronization with the ringer tone.
Figure 2-4 Digital Accessory Output Waveform
REC10
RAUXO
(Tone output)
RINGER
TIMER
2.1.5 Audio Digital Signal Processor
Send signal digital BPF processing, receive signal digital LPF processing, transmission level (digital gain)
control, and tone generation processing.
(1) Voice send signal digital gain fine adjustment function
Performs gain fine adjustment for voice send signal by digital coefficient multiplication. Together with prefilter
gain adjustment, fine adjustment is possible at a width of 5.8 dB.
(2) Voice receive signal digital gain fine adjustment function
Performs fine adjustment of gain for voice receive signal by digital coefficient multiplication.
(3) Tone generation function
Generates single-tone and dual-tone audible signals. Tone frequency, interrupt pattern, gain, generation/stop
can be controlled by microcontroller command. GSM triple tone can be generated by special command.
11
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