msm6895 Oki Semiconductor, msm6895 Datasheet

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msm6895

Manufacturer Part Number
msm6895
Description
Multi-function Pcm Codec
Manufacturer
Oki Semiconductor
Datasheet

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E2U0022-28-81
¡ Semiconductor
¡ Semiconductor
MSM6895/6896
Multi-Function PCM CODEC
GENERAL DESCRIPTION
The MSM6895/MSM6896, developed especially for low-power and multi-function applications
in ISDN telephone terminals, are single +5 V power supply CODEC LSI devices. The devices
consist of the analog speech paths directly connectable to a handset, the calling circuit directly
connectable to a piezosounder, the push-button key scanning interface between push buttons
and control processors, the dial tone generator, the B-channel interface, the CODEC, and the
processor interface. The functions can be controlled via the 8-bit data bus.
FEATURES
• Single +5 V Power Supply
• Low Power Dissipation
• In compliance with ITU-T’s companding law
• Transmission clocks
• Built-in PLL
• Built-in Reference Voltage Supply
• Ringing Tone
• Ringing Tone Combination
• Information Tone
• Built-in PB Tone Generator
• B-Channel Selectable
• General Latch Output for Speech path Control
• Watchdog Timer
• Key Scanning I/O
• Direct Connection to Handset
• Built-in Preamplifier for Loudspeaker
• Handfree Interface
• Digital and Analog Interface for the phone-conference speech paths
• Package:
80-pin plastic QFP (QFP80-P-1420-0.80-BK)
Power ON Mode
CODEC Power Down Mode
m-law
A-law
Continuous CLK
Burst CLK
Output
Input
(Product name : MSM6895GS-BK)
(Product name : MSM6896GS-BK)
: 20 mW Typ. 53 mW Max.
: 10 mW Typ. 21 mW Max.
: MSM6895
: MSM6896
: 64, 128, 256 kHz
: 192, 384, 768, 1536, 2048 kHz
: Controlled by processor, 9 modes
: Controlled by processor, 6 modes
: Controlled by processor, 9 modes
: 4 bits
: 500 ms
: 5 bits
: 8 bits
Previous version: Nov. 1996
This version: Aug. 1998
MSM6895/6896
1/43

Related parts for msm6895

msm6895 Summary of contents

Page 1

... MSM6895/6896 Multi-Function PCM CODEC GENERAL DESCRIPTION The MSM6895/MSM6896, developed especially for low-power and multi-function applications in ISDN telephone terminals, are single +5 V power supply CODEC LSI devices. The devices consist of the analog speech paths directly connectable to a handset, the calling circuit directly ...

Page 2

... MIX PLL SW & MIX SW DTMF TONE SW & MIX SW CONT. SGGEN SCANNING OUTPUT PO0 ~ VSG VSGC PO4 MSM6895/6896 CAI CK1536 T1O TEST TEST B1T B1 B1R AIN B2T B2R B2 CODEC BR1 BT1 AOUT BR2 BT2 CK8 8K CK64 64K F-TONE GEN ...

Page 3

... RM1 RMO0 13 RMO1 14 SPO 15 RPO 16 R2I 17 R1I TMX2I 21 MLDY 22 TPBI 23 TMX1I connect pin 80-Pin Plastic QFP MSM6895/6896 AD0 DB7 62 DB6 61 60 DB5 DB4 59 DB3 58 DB2 57 56 DB1 55 DB0 54 INTT PI7 53 52 PI6 PI5 51 50 PI4 PI3 ...

Page 4

... PI6 53 PI7 54 INTT 55 DB0 56 DB1 57 DB2 58 DB3 59 DB4 60 DB5 MSM6895/6896 Type Description — NC — Analog Power Supply AI Analog Signal Input to CODEC AO Bypass Capacitor for Signal Ground AO Analog Signal Output from CODEC DI Control Input for Test DI Clock Input for Test DI Transmission Colck Input ...

Page 5

... BT1 74 BT2 75 BR1 76 BR2 RESET 77 TIME 78 79 LML 80 LA MSM6895/6896 Type Description DI B1 Channel Recive Input DI B2 Channel Recive Input DI B Channel Selector Transmit Data ( Channel Selector Transmit Data ( Channel Selector Receive Data ( Channel Selector Receive Data (2) DI ...

Page 6

... SW0 SW1 0 0 Tone combination Tone combination Tone combination Tone combination VDG Digital Ground. VAG Analog Ground. Wambling Cycle Wambling Cycle Time MSM6895/6896 f1 f2 1000 Hz 1333 Hz 800 Hz 1000 Hz 800 Hz 1000 Hz 1000 Hz 1333 Hz 6/43 ...

Page 7

... During initial setting, SPO non-signal state (VSG level), and a speech signal, RTONE0, RTONE1, FTONE, hold acknowledge tone, and PB signal acknowledge tone are output through processor control. RPO RMI VSG for the load of 20 kW, SPO can not directly drive a speaker. PP MSM6895/6896 7/43 ...

Page 8

... RPO pin. A circuit example for adjustment of frequency characteristics TPAO TMX1I, TMX2I Transmit addition signal inputs. Through processor control, the input signals to TMX1I and TMX2I are added to the transmit signal and are output to T1O and T2O respectively. TPBI MSM6895/6896 VSG 8/43 ...

Page 9

... VA power supply for an analog circuit and VD is for digital supply. Connect both VA and VD to the +5 V analog path of the system. CAI CODEC analog output. Connect CAI to T1O. CAO CODEC analog output. Connect CAO to R1I via an AC-Coupling capacitor. MSM6895/6896 9/43 ...

Page 10

... TEST, CK1536 External master clock inputs. Since the MSM6895 and MSM6896 contain PLL internally, the external clock signal is eliminated. But the device can operate with the external clock through these pins. When these pins are not used, leave these pins open ...

Page 11

... INTT does not output any signal while no CK8 signal is input. Interrupt release signal t < from processor INTT output DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7 Data bus inputs and outputs < t < MSM6895/6896 t < 11/43 ...

Page 12

... Control of channel selector Key scanning output control, interrupt release control Volume control and tone combination control of sounder CODEC power down control Level control of transmit path, PB tone, and Hold tone, Gain control of receive path Frequency control of howler tone Read of the key scanning data MSM6895/6896 12/43 ...

Page 13

... LML Control signal output for external hold tone generator. LML goes to digital "1" state when the hold tone transmit mode on transmit path or the hold acknowledge tone mode on receive path is selected. During initialized state, LML is in digital "0" state. MSM6895/6896 13/43 ...

Page 14

... All Digital Input Pins PO0 to PO4 Output Condition Min. CK64 CK8 CK64 CK64ÆCK8 See Fig.1 CK8ÆCK64 See Fig.1 — 1 CK64 B1R, B2R B1R, B2R CK8 MSM6895/6896 Rating Unit –0 0 –0 0 –55 to +150 °C Min. ...

Page 15

... Gain: Typ.) RMI CAI TPAO, T1O, T2O, RPO, SPO, CAO RMO0, RMO1 TPAO, T1O, T2O, RPO, SPO, CAO RMO0, RMO1 TPAI, TPBI, RMI MLDYI, TMX1I, TMX2I R1I, R2I CAI MSM6895/6896 Min. Typ. Max. Unit 2000 — — ns 100 — — ns 200 — ...

Page 16

... OL — TPAO, T1O, T2O, CAO, RPO, RMO1, RMO2, SPO — TPAI, TPBI, MLDYI, RMI TMX1I, TMX2I, R1I, R2I CAI (fin : < 4 kHz) — FORCE Current SINK Current MSM6895/6896 = 5 V ±5 –10°C to +70°C) DD Min. Typ. Max. Unit — 3.9 10.0 mA — ...

Page 17

... Transmit Gain GT T3 Tracking Receive Gain GT R3 Tracking Notes: *1 Psophometric filter is used *2 Upper is specified for the MSM6895, lower for the MSM6896 Freq. Level Condition (Hz) (dBm0) 60 300 1020 0 2020 3000 3400 300 1020 0 2020 ...

Page 18

... Power Supply Noise Rejection Ratio PSR R Notes: *1 Psophometric filter is used *2 Upper is specified for the MSM6895, lower for the MSM6896 *3 PCM data for MSM6895: All "1" PCM data for MSM6896: "11010101" *4 Minimum value of the group delay distortion *5 The measurement under idle channel noise Freq ...

Page 19

... RG1 PAT typical 1020 –22.4 setting RG2 PAT TPAI: 510 W at termination Ni TPA — — Meature at TPAO Ni TPB — — T1O, T2O TPAO, T1O, VOT — — T2O MSM6895/6896 ( ±5 –10°C to +70°C) DD Min. Typ. Max. Unit 18.0 20.0 22.0 dB 15.7 17.7 19.7 dB 15.7 17.7 19.7 dB –2.0 0.0 +2 ...

Page 20

... THD PBR — — RPO, SPO GSIDE 1020 –21.4 TPBI-RPO Ni RPO — — RPO Ni SPO — — SPO RMI, VSG Ni RMO — — RMO0, RMO1 MSM6895/6896 ( ±5 –10°C to +70°C) DD Min. Typ. Max. Unit 13.2 15.3 17.3 dB 13.2 15.3 17.3 dB — –0.01 — dB — –179.6 — ...

Page 21

... RMO0, RMO1 — — VOM + VRT0 — — RPO VRT1 — — RPO VFTRP RPO — — VFTSP SPO MSM6895/6896 ( ±5 –10°C to +70°C) DD Min. Typ. Max. Unit 2.4 — — 3.0 — — PP 77.2 91.7 109 132.0 157 ...

Page 22

... WRÆLA, LB, LC, LD, LML, LOSS t PDLA WRÆPO0, PO1, PO2, PO3, PO4 t PDSCN Pull-up resistor : 10 kW RDÆDB0 to DB7 t PDDATA BT1ÆBR1, BR2 t PDPATH BT2ÆBR1, BR2 t CK64ÆB1T, B2T PDCOD MSM6895/6896 ( ±5 –10°C to +70°C) DD Min. Typ. Max. Unit Volume 1 3.25 4.0 — Volume 2 0.73 1.28 1.98 V Volume 3 ...

Page 23

... Latch Output Figure 2 Processor Interface Timing tpd cod Figure 1 CODEC Timing t AW2 t CW2 DW1 DW2 t PDSCN t PDLA MSM6895/6896 AR1 AR2 t t CR1 CR2 PDDATA PDDATA 23/43 ...

Page 24

FUNCTIONAL DESCRIPTION Control Data Description Sounder control WRITE Mode Address Data AD1 = 0, AD0 = 0 Control Data DB7 DB6 DB5 DB4 DB3 DB2 DB1 PDC ...

Page 25

Control of function key acknowledge tone WRITE Mode Address Data AD1 = 0, AD0 = 0 Control Data DB7 DB6 DB5 DB4 DB3 DB2 DB1 NTTC ...

Page 26

PB tone control WRITE Mode Address Data AD1 = 0, AD0 = 0 Control Data DB7 DB6 DB5 DB4 DB3 DB2 DB1 PBTC ...

Page 27

Latch control and timer reset WRITE Mode Address Data AD1 = 0, AD0 = 0 Control data DB7 DB6 DB5 DB4 DB3 DB2 DB1 ...

Page 28

Table 1. Transmit speech path setting list Control Symbol Status Symbol LML1 LT1 LMX1 LML2 LT2 LMX2 LMN MUTN TA-6 ...

Page 29

Table 2. Receive speech path setting list (RPO output) Control Signal Status Symbol LS LT1 LT2 ...

Page 30

Table 4. Receive speech path setting list (SPO) Control Signal Status Symbol LS LMR LT1 RS-7 ...

Page 31

Channel selector control WRITE Mode Address Data AD1 = 0, AD0 = 1 Control Data DB7 DB6 DB5 DB4 DB3 DB2 DB1 ...

Page 32

Table 5. Output pin connection status by channel selector control Status Output Pin Connection Status Symbol BIT B2T DIN BR1 BR2 A1 1 — DOUT — B1R * BT1 — *1 B1R *1 A4 ...

Page 33

WRITE Mode Address Data AD1 = 1, AD0 = 0 Control Data DB7 DB6 DB5 DB4 DB3 DB2 DB1 Output Data DB0 The data ...

Page 34

Sounder, volume, and tone combination WRITE Mode Address Data AD1 = 1, AD0 = 1 Control Data DB7 DB6 DB5 DB4 DB3 DB2 DB1 ...

Page 35

CODEC power down control WRITE Mode Address Data AD1 = 1, AD0 = 1 Contorol Data DB7 DB6 DB5 DB4 DB3 DB2 DB1 Control DB0 ...

Page 36

Gain control WRITE Mode Address Data AD1 = 1, AD0 = 1 DB7 DB7 DB6 DB5 DB4 DB3 DB2 DB1 ...

Page 37

Howler tone color combination WRITE Mode Address Data AD1 = 1, AD0 = 0 Control Data DB7 DB6 DB5 DB4 DB3 DB2 DB1 Key scanning data read out READ Mode Address Data AD1 ...

Page 38

... Semiconductor APPLICATION CIRCUIT Line SW1 SW0 LML MLDY CAI T1O R2I TMX2I TMX1I TPBI TPAO Handset PI7 PI6 PI5 PI4 PI3 PI2 PI1 PI0 PO4 PO3 PO2 PO1 PO0 Sounder Speaker MSM6895/6896 38/43 ...

Page 39

... CK64 signal. CK8 CK64 PCMIN/OUT Burst clock generator Continuous Clock 8 kHz Syncronous Signal Continuous Clock Syncronous Signal Burst Clock 125 Equivalent to the 74LS161 MSM6895/6896 +5 V MSM6895/6896 CK64 CK8 39/43 ...

Page 40

... TPAO TPBI T1O CAI TMX2I AD T2O DA TMX1I CAO R2I R1I MSM6895 RPO RMI RMO0 RMO1 MSM7508 AIN AD DA AOUT MSM6895/6896 ( B1T Speaker B (B) B1R ( B2T Speaker C (C) B2R Note: (A) indicates the voice signal of the A speaker BR2 BT2 PCMOUT PCMIN 40/43 ...

Page 41

TPAO TPBI TPAI + R1I – R2I – RPO RMI +15.3 dB RMO0 X 1 RMO1 X–1 –6 SPO 0 dB –3 dB FTONE ...

Page 42

... Unused analog input pins must be connected to the VSG pin and unused digital pins must be connected to the GND pin. pin not lower than –0.3 V even instantaneously to avoid latch- MSM6895/6896 42/43 ...

Page 43

... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM6895/6896 (Unit : mm) Package material Epoxy resin ...

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