MSM6895GS-BK Oki Semiconductor, MSM6895GS-BK Datasheet

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MSM6895GS-BK

Manufacturer Part Number
MSM6895GS-BK
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

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MSM6895GS-BK Summary of contents

Page 1

... Previous version: Nov. 1996 : 20 mW Typ Max Typ 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 bits : 8 bits (Product name : MSM6895GS-BK) (Product name : MSM6896GS-BK) MSM6895/6896 1/43 ...

Page 2

Semiconductor BLOCK DIAGRAM TPAO TPAI M CAO R1I R2I RPO RMI RMO0 + RMO1 – SPO SP SA0 SA1 BUZZER VA VD VAG VDG TMX1I T2O TMX2I TPBI MLDY SW & MIX PLL SW & MIX SW DTMF TONE ...

Page 3

Semiconductor PIN CONFIGURATION (TOP VIEW SW0 4 SW1 5 VDG 6 VAG 7 SA0 8 SA1 RM1 RMO0 13 RMO1 14 SPO 15 RPO 16 R2I 17 ...

Page 4

Semiconductor PIN DESCRIPTION Pin Symbol Type Data Latch Output Data Latch Output Data Latch Output D 4 SW0 DI Sounder Tone Select (1) 5 SW1 DI Sounder Tone ...

Page 5

Semiconductor PIN DESCRIPTION (Continued) Pin Symbol Type 61 DB6 I/O Data Bus (6) 62 DB7 I/O Data Bus (7) 63 AD0 DI Address Data ( — Digital Power Supply 65 AD1 DI Address Data Input ...

Page 6

Semiconductor PIN AND FUNCTIONAL DESCRIPTIONS LA, LB, LC, LD General latch outputs for external control. Statuses of these outputs are controlled via the processor interface. Refer to the description of the control data for details. SW0, SW1 External control ...

Page 7

Semiconductor SA0, SA1 Sounder (ringing tone) driving outputs. The output signal on SA1 is inverted against the signal on SA0. The sounder circuit can be easily configured by connecting a piezo-sounder between SA0 and SA1. Through processor control, the ...

Page 8

Semiconductor R1I, R2I, RPO Receive preamplifier inputs and output. R1I and R2I are for the inputs and RPO is for the output of the receive preamplifier. Normally, R1I is connected via an AC-coupling capacitor to the CODEC analog output ...

Page 9

Semiconductor TPAI, TPAO The transmit preamplifier input and output. TPAI is the input and TPAO is the output. Connect TPAI to the microphone of handset via an AC- coupling capacitor if the DC offset appears at a transmit signal ...

Page 10

Semiconductor 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, ...

Page 11

Semiconductor PO0, PO1, PO2, PO3, PO4, PO5, PO6, PO7 Key scanning outputs. These output pins need external pull-up resistors because of their open- drain circuits. Through processor control, these outputs can be set open or to digital "0". Initially, ...

Page 12

Semiconductor AD0, AD1 Address data inputs for the internal control registers. Addressing of the internal control registers is executed by AD0 and AD1 and sub address data, DB7 and DB6. AD1 AD0 DB7 DB6 ...

Page 13

Semiconductor CE Chip Enable signal input. When digital "0" state, WR and RD are valid. B1T, B2T, B1R, B2R B channel interface inputs and outputs. B1T and B2T are outputs, and B1R and B2R are inputs. ...

Page 14

Semiconductor ABSOLUTE MAXIMUM RATINGS Parameter Symbol Power Supply Voltage V DD Analog Input Voltage V AIN Digital Input Voltage V DIN Storage Temperature T STG RECOMMENDED OPERATING CONDITIONS Parameter Symbol Power Supply Voltage V D Operating Temperature Ta Input ...

Page 15

Semiconductor Recommended Operating Conditions (Processor Digital Interface) Parameter Symbol Write Pulse Period P W Write Pulse Width T W Read Pulse Width Address Data AW1 Setup Time t AR1 t Address Data AW2 Hold Time t ...

Page 16

Semiconductor ELECTRICAL CHARACTERISTICS DC and Digital Interface Characteristics Parameter Symbol I DD1 I DD2 Power Supply Current I DD3 I DD4 Input High Voltage V IH Input Low Voltage V IL High Input Leakage I IH Current Low Input ...

Page 17

Semiconductor AC Characteristics 1 (CODEC) Parameter Symbol Loss T1 Loss T2 Loss T3 Transmit Frequency Loss T4 Response Loss T5 Loss T6 Loss R1 Loss R2 Receive Frequency Loss R3 Response Loss R4 Loss ...

Page 18

Semiconductor AC Characteristics 1 (CODEC) (Continued) Parameter Symbol Nidle T Idle Channel Noise Nidle Absolute Amplitude Absolute Delay Time tgd T1 tgd T2 Transmit Group Delay tgd T3 tgd T4 tgd T5 tgd ...

Page 19

Semiconductor AC Characteristics 2 (Transmit Path) Parameter Pre-Amp Gain Transmit Path 1 Gain Transmit Path 2 Gain Transmit Addition Signal 1 Gain Transmit Addition Signal 2 Gain In-Channel PB Signal Output Level In-Channel PB Signal Output Level Setting In-Channel ...

Page 20

Semiconductor AC Characteristics 3 (Receive Path) Parameter Receive Main Amp. Gain Receive Main Amp. Output Gain Difference Receive Main Amp. Output Phase Difference Receive Signal Path Gain Receive Signal Path Gain Setting Receive Addition Signal Path Gain Receive Addition ...

Page 21

Semiconductor AC Characteristics 3 (Receive Path) (Continued) Parameter Maximum Output Amplitude RTONE0 Output Amplitude *7 RTONE1 Output Amplitude *8 FTONE Output Amplitude Notes: *7 DT, PDT, SDT, CRBT, IIT *8 RBT, DT, T250 Freq. Level Symbol Condition (Hz) (dBV) ...

Page 22

Semiconductor AC Characteristics 4 (Ringing Tone Output Circuit) Parameter Calling Tone Output Amplitude *9 Howler Tone Output Amplitude Note: *9. IR-1, IR-2, SIR-1, SIR-2, CR, T1K, HR, SPT Digital Interface Characteristics Parameter Digital Output (Latch) Delay Time key Scanning ...

Page 23

Semiconductor TIMING DIAGRAM 1 CK64 CK8 t WS B1T or MSB B2T B1R or MSB B2R A0 AW1 CE t CW1 DB0 to DB7 PO0 to PO4 Latch Output Figure ...

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

Semiconductor Application circuit at the PCM Signal Data Rate of 192, 384, 768, 1536 and 2048 kbps. BCLOCK signal When the PCM signal data rate is one of 192, 384, 768, 1536, and 2048 kbps, input the 9-bit burst ...

Page 40

Semiconductor Application Circuit of Three-party Speech Path Speaker A ( (C) (B) (C) ( (C) Speech path setting (Speech through a handset) Transmit: TA-4 (LT1 = 1, LMX1 ...

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

Semiconductor RECOMMENDATIONS FOR ACTUAL DESIGN • To assure proper electrical characteristics, use bypass capacitors with excellent high frequency characteristics for the power supply and keep them as close as possible to the device pins. • Connect the AG pin ...

Page 43

Semiconductor PACKAGE DIMENSIONS QFP80-P-1420-0.80-BK Mirror finish Notes for Mounting the Surface Mount Type Package The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and ...

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