UPD9930G-22 Ver la hoja de datos (PDF) - NEC => Renesas Technology
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UPD9930G-22 Datasheet PDF : 78 Pages
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µPD9930
1. PIN FUNCTIONS
1.1 LIST OF PIN FUNCTIONS
Table 1-1 List of Pin Functions (1/2)
Pin No.
1
2
3
Pin Name
MDAT
MCLK
DRSTB
Input/Output
Input
Input
Input
4
DI
Input
5
DO
Output
6
DCLK
Output
7
TC1
Input
8
TC2
Input
9
TIMER
Output
10
RINGER
Output
11
DSPSEL
Input
12
REQB
Input
13
RESETB
Input
14
FSYNC
Input
15
DGND
—
16
AGND1
—
17
AGND2
—
18
AGND3
—
19
AGND4
20
MICI+
—
Input
21
MICI–
Input
22
MICO
Output
23
MIXI
24
XAUXO
Input
Output
Function
Microcontroller interface serial input
Microcontroller interface clock input
DAI (Digital Audio Interface) reset input
This is reset at low level. Internally pulled high.
DAI serial input
Internally pulled high.
DAI serial output
Hi-Z in normal operation (TC1 = TC2 = low level)
DAI clock output (104 kHz)
Hi-Z in normal operation
DAI mode control
TC2 TC1 Test mode specification
Selection of test mode specified by
GSM11.10 in combination with TC1 L
L Normal operation
and TC2
L
H Speech encoder test mode
L: Low level
H: High level
H
L Speech decoder test mode
H
H Acoustic device test mode
TC1 and TC2 pins are internally pulled down.
Timer output. Output of rectangular wave synchronized with tone intermittent
pattern.
Ringer tone output. Output of rectangular wave synchronized with tone fre-
quency.
Selection of DSP interface input/output timing mode.
Connect to VDD or GND. (VDD = mode 1, GND = mode 2)
Input of DSP interface data transmit request signal.
Serial data can be input/output at low level.
System reset input. This is reset at low level. Initializes all control registers.
Reset when turning power on.
Send/receive frame synchronization signal (8 kHz) input
Digital ground. Connect to a digital ground line near µPD9930 pins.
Analog ground. Connect to an analog ground line near µPD9930 pins.
Microphone amplifier non-inverted input
Microphone amplifier inverted input
Microphone amplifier output. Connect microphone amplifier gain adjust resistor.
Outputs sidetone signal to REC2I- pin.
Pre-filter + mixer input
Accessory input amplifier output. Connect accessory input amplifier gain adjust
resistor.
6
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