|
|
PDF MSM7708-02 Data sheet ( Hoja de datos )
| Número de pieza | MSM7708-02 | |
| Descripción | Serial Register Interface ADPCM CODEC for Telephone Recording | |
| Fabricantes | OKI electronic componets | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MSM7708-02 (archivo pdf) en la parte inferior de esta página. Total 38 Páginas | ||
|
No Preview Available !
E2U0044-16-X2
¡ Semiconductor¡ Semiconductor
This versioMn:SJMan7.710989-802
Previous version: Nov. 1996
MSM7708-02
Serial Register Interface ADPCM CODEC for Telephone Recording
GENERAL DESCRIPTION
The MSM7708-02 is a CMOS IC developed for applying to PHS (Personal Handyphone System).
This device provides a CODEC function which performs transcoding between the voice band
analog signal and 32 kbps ADPCM data. It also provides a serial register interface function for
telephone call recording.
Provided with such functions as DTMF tone and several kinds of tone generation, transmit/
receive data mute and gain control, side-tone pass, and voice/silence detection, the MSM7708-
02 is best suited for PHS handsets.
FEATURES
• Single 3 V power supply operation (VDD: 2.7 V to 3.6 V)
• Low power consumption
When system is operating: 6 mA typ.
When powered down: 0.02 mA typ.
(ADPCM CODEC)
• ADPCM: ITU-T Recommendations G.721 (32 kbps)
• Transmit/receive full duplex capability
• PCM interface code format: m-law or A-law selectable
• Serial ADPCM and PCM transmission rate: 64 kbps to 2,048 kbps
• Transmit/receive mute function; transmit/receive programmable gain setting
• Side tone generator (8-step level adjustment)
• Built-in DTMF tone, ringing tone, and various tone generators
• Built-in VOX function
(Serial Register Interface)
• Interface for a serial register: 1 Mb (MSM63V89C), 4 Mb (MSM6684), 8 Mb (MSM6685)
• Interface for a serial voice ROM: 1 Mb (MSM6595A), 2 Mb (MSM6596A), 3 Mb (MSM6597A)
• Maximum recording time: 32 s (1 Mb), 128 s (4 Mb), 256 s (8 Mb)
• Maximum recording channels: 32 ch
• Playback data transmit/receive selectable
• Package:
64-pin plastic TQFP (TQFP64-P-1010-0.50-K) (Product name : MSM7708-02TS-K)
1/38
1 page  
¡ Semiconductor
PIN DESCRIPTIONS (Continued)
Pin Symbol Type
Description
41 PCMRO O Receive side PCM signal output
42 NC — No connection
43 IR I Receive side ADPCM signal input
44 IS O Transmit side ADPCM signal output
45 NC — No connection
46 PCMSI
I Transmit side PCM signal input
47 PCMSO O Transmit side PCM signal output
48 NC — No connection
49 DG
I Digital ground
50 NC — No connection
51 XSYNC I Transmit side PCM and ADPCM data sync signal input
52 RSYNC I Receive side PCM and ADPCM data sync signal input
53 BCLK
I PCM and ADPCM data shift clock input
54 NC — No connection
55 CS2 O Voice ROM chip select output
56 CS1 O Serial register chip select output
57 RWCK O Serial register data clock output
58 TAS O Serial register transfer address-strobe output
59 SAS O Serial register address-strobe output
60 SAD O Serial register address data output
61 NC — No connection
62 WE O Serial register write enable output
63 DIO I/O Serial register data input/output
64 NC — No connection
MSM7708-02
5/38
5 Page 
¡ Semiconductor
MSM7708-02
DEN, EXCK, DIN, DOUT
Serial control ports for MCU interface.
Reading and writing data is performed by an external CPU through these pins. 14-byte control
registers (CR0 - 13) are provided in this device.
DEN is the "Enable" control signal input, EXCK is the data shift clock input, DIN is the address
and data input, and DOUT is the data output.
Input/output timing is shown in Fig. 3.
DEN
EXCK
, ,DIN
W A3 A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0
DOUT
High Impedance
(a) Write Data Timing Diagram
DEN
EXCK
DIN
DOUT
R A3 A2 A1 A0
High Impedance
B7 B6 B5 B4 B3 B2 B1 B0
(b) Read Data Timing Diagram
Figure 3 MCU Interface Input/Output Timing
MUTE
This pin is used to enable the receive side voice path mute level.
To set the mute level, set this pin to "1".
MLV0, MLV1, MLV2
This pin is used to set the receive side voice path mute level.
For the control method, refer to the control register description (CR1). Since these signals are
ORed with CR1 - B2, B1, and B0 internally, set these register data to "0" when using this pin.
11/38
11 Page | ||
| Páginas | Total 38 Páginas | |
| PDF Descargar | [ Datasheet MSM7708-02.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MSM7708-02 | Serial Register Interface ADPCM CODEC for Telephone Recording | OKI electronic componets |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |