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Oki MSM7586-01 Manual
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Oki MSM7586-01 Manual

Oki MSM7586-01 Manual

P/4 shift qpsk modem/adpcm codec
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E2U0034-28-82
¡ Semiconductor
¡ Semiconductor
MSM7586-01/03
p/4 Shift QPSK MODEM/ADPCM CODEC
GENERAL DESCRIPTION
The MSM7586 is a CMOS IC developed for use with digital cordless telephones. The device
provides a p/4 shift QPSK modem function and a CODEC function which performs transcoding
between the voice band analog signal and 32 kbps ADPCM data.
The MSM7586 performs DTMF tone and several types of tone generation, transmit/receive data,
mute and gain control, side-tone pass and its gain control, and VOX function.
FEATURES
(p/4 Shift QPSK Modem Unit)
• 384 kbps transmission speed
• Built-in root Nyquist digital filter for the baseband band limiter
• Built-in D/A converters for the analog outputs of the quadrature signal component I and Q
• The DC offset and gain can be adjusted with respect to the differential I and Q analog outputs
• Completely digitized p/4 shift QPSK demodulator system
(ADPCM CODEC Unit)
• ADPCM system: built-in ITU-T Recommendations G.726 (32kbps, 24 kbps, 16 kbps)
• Transmit/receive full-duplex capability
• PCM interface code format: selectable between m-law and A-law
• 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 ringing tone generators
• Built-in VOX function
(Common Unit)
• Operate with a single 3 V power supply (V
• Low power consumption
When entire system is operating: 20 mA Typ.
When powered down:
• Package:
100-pin plastic TQFP (TQFP100-P-1414-0.50-K)
: 2.7 V to 3.6 V)
DD
0.02 mA Typ.
(Product name: MSM7586-01TS-K)
(Product name: MSM7586-03TS-K)
This version: Aug. 1998
MSM7586-01/03
Previous version: Nov. 1996
1/42

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Summary of Contents for Oki MSM7586-01

  • Page 1 E2U0034-28-82 This version: Aug. 1998 ¡ Semiconductor ¡ Semiconductor MSM7586-01/03 Previous version: Nov. 1996 MSM7586-01/03 p/4 Shift QPSK MODEM/ADPCM CODEC GENERAL DESCRIPTION The MSM7586 is a CMOS IC developed for use with digital cordless telephones. The device provides a p/4 shift QPSK modem function and a CODEC function which performs transcoding between the voice band analog signal and 32 kbps ADPCM data.

  • Page 2: Block Diagram

    ¡ Semiconductor MSM7586-01/03 BLOCK DIAGRAM PDN0 PDN1 PDN2 Phase Delay Decision IFIN detector detector IFCK DPLL To each block EXCKM MODEM DENM To each block DINM interface DOUTM R7, R6 BSTO R5, R4 CRM1-B7 to B4 I– DC Adjust –1...

  • Page 3: Pin Configuration (Top View)

    ¡ Semiconductor MSM7586-01/03 PIN CONFIGURATION (TOP VIEW) VDAM Q– I– TXCO TXCI BSTO SGCR SGCT AIN1+ AIN1– GSX1 BCLK XSYNC RSYNC AIN2 GSX2 PCMSO PCMSI VFRO AOUT– PCMRO AOUT+ PCMRI NC : No connect pin 100-Pin Plastic TQFP 3/42...
  • Page 4 ¡ Semiconductor MSM7586-01/03 PIN AND FUNCTIONAL DESCRIPTIONS (Modem Unit) Transmit data input for 384 kbps. TXCI Transmit clock input. When the control register CRM0 - B6 is "0", a 384 kHz clock pulse synchronous with TXD should be input to this pin. This clock pulse should be continuous because this device use APLL to generate an internal clock pulse.
  • Page 5 ¡ Semiconductor MSM7586-01/03 (1) CRM0 – B6 = "0" D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 -1 D TXCI (384 kHz) TXCO (384 kHz) I, Q     Ramp rise-up Ramp...
  • Page 6 ¡ Semiconductor MSM7586-01/03 BSTO BSTO is the modulator side burst window output. The burst position of the I and Q baseband modulator output is output. I+, I– Quadrature modulation signal I Component differential analog output. Their output levels are 500 mV (when TXD = "0": 360 mV...
  • Page 7 ¡ Semiconductor MSM7586-01/03 PDN0, PDN1, PDN2 Various power down control. PDN0 controls the standby mode/communication mode; PDN1 controls the modulator unit; and PDN2 controls the demodulator unit. Refer to Table 1 for details. The control register reset input width should be 200ns or more.
  • Page 8 ¡ Semiconductor MSM7586-01/03 VDDM, VDAM +3 V power supply for the modem unit. Supplied to the digital circuits through the VDDM pin and to the analog circuits through the VDAM pin. VDDM and VDAM, and VDDC and VDAC should be connected as close as possible on the PC board.
  • Page 9 ¡ Semiconductor MSM7586-01/03 RXD, RXC, RXSC Receive data and receive clock outputs. When the modem unit is powered on, RXD, RXC and RXSC are selected based on SLS as shown in Figure 3. These outputs are used by the clock regenerator circuit.
  • Page 10 ¡ Semiconductor MSM7586-01/03 AFC operation range specification signal input. As shown in Fig. 4, the AFC information is reset when both AFC and RPR are set to "1". AFC operation starts after a fixed number of clock cycles and the AFC information is reset. If RPR is set to "1", an average number of times that AFC turns on is low.
  • Page 11        ¡ Semiconductor MSM7586-01/03 DENM EXCKM DINM DOUTM High Impedance (a) Write Data Timing Diagram DENM          EXCKM DINM DOUTM High Impedance (b) Read Data Timing Diagram Figure 5 Modem Unit MCU Interface I/O Timing The register map is shown below.
  • Page 12 ¡ Semiconductor MSM7586-01/03 (CODEC Unit) AIN1+, AIN1-, AIN2, GSX1, GSX2 The transmit analog input and the output for transmit gain adjustment. The pin AIN1–(AIN2) connects to the inverting input of the internal transmit amplifier, and the pin AIN1+ connects to the non-inverting input of the internal transmit amplifier. The pin GSX1 (GSX2) connects to output of the internal transmit amplifier.
  • Page 13 ¡ Semiconductor MSM7586-01/03 AIN1– – Reference voltage generator Differential analog input signal AIN1+ GSX1 SGCT AIN2 – – to ENCODER GSX2 AOUT+ –1 = 120 nF Analog output signal + 350 W – AOUT– Transmit gain : (V /Vi) GSX2 = (R2/R1) ¥...
  • Page 14 ¡ Semiconductor MSM7586-01/03 IO1 to IO7 I/O pins of the internal analog switch. Refer to the control register description table (CRC5) and the block diagram for connection information and control methods. TOUT1 to TOUT3 Sign bit output pins of the tone generator.
  • Page 15 ¡ Semiconductor MSM7586-01/03 PCMSO Transmit PCM data output. This PCM output signal is output from MSB synchronous with the rising edge of BCLK and XSYNC. PCMSI Transmit PCM data input. This signal is converted to the ADPCM data. The PCM signal is shifted on the falling edge of BCLK.
  • Page 16 ¡ Semiconductor MSM7586-01/03 VOXO Transmit VOX function signal output. VOX function is used to recognize the presence or absence of the transmit voice signal by detecting the signal energy. "H" and "L" levels on this pin correspond to the presence and the absence, respectively.
  • Page 17 ¡ Semiconductor MSM7586-01/03        DENC, EXCKC, DINC, DOUTC Serial control ports for MCU interface. Reading and writing data are performed by an external MCU through these pins. The 8-byte control registers (CRC0 - 7) are provided for the CODEC unit in this device. DENC is the "Enable"...

  • Page 18: Absolute Maximum Ratings

    ¡ Semiconductor MSM7586-01/03 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Condition Rating Unit Power Supply Voltage — –0.3 to +5 Analog Input Voltage — –0.3 to V + 0.3 Digital Input Voltage — –0.3 to V + 0.3 Storage Temperature — –55 to +150 °C...

  • Page 19: Electrical Characteristics

    ¡ Semiconductor MSM7586-01/03 ELECTRICAL CHARACTERISTICS DC Characteristics = 2.7 V to 3.6 V, Ta = –25°C to +70°C) Parameter Symbol Condition Min. Typ. Max. Unit Mode A, Mode B (When V = 3.0 V) — 0.02 Mode C ( When V = 3.0 V )
  • Page 20 ¡ Semiconductor MSM7586-01/03 Analog Interface Characteristics (Modem Unit) = 2.7 V to 3.6 V, Ta = –25°C to +70°C) Parameter Symbol Condition Min. Typ. Max. Unit Output Resistance Load I+, I–, Q+, Q– — — Output Capacitance Load I+, I–, Q+, Q–...
  • Page 21 ¡ Semiconductor MSM7586-01/03 Digital Interface Characteristics (Modem Unit) = 2.7 V to 3.6 V, Ta = –25°C to +70°C) Parameter Symbol Condition Reference Min. Typ. Max. Unit Transmit — XDM1,2 Fig. 9 C load = 50 pF Digital I/O Setting Time —...
  • Page 22 ¡ Semiconductor MSM7586-01/03 Analog Interface Characteristics (CODEC Unit) = 2.7 V to 3.6 V, Ta = –25°C to +70°C) Parameter Symbol Condition Min. Typ. Max. Unit AIN+, AIN–, AIN2, PWI, Input Resistance — — AIN3, AIN4 GSX1, GSX2, VFRO, SAO —...
  • Page 23 ¡ Semiconductor MSM7586-01/03 Digital Interface Characteristics (CODEC Unit) = 2.7 V to 3.6 V, Ta = –25°C to +70°C) Parameter Symbol Condition Min. Typ. Max. Unit Reference 1 LSTTL + 100 pF — 200 (100) SDXC, SDRC pull-up : 500 W Digital Output Delay Time —...
  • Page 24 ¡ Semiconductor MSM7586-01/03 AC Characteristics (CODEC Unit) = 2.7 V to 3.6 V, Ta = –25°C to +70°C) Condition Parameter Symbol Min. Typ. Max. Unit Frequency (Hz) Level dBm0 0 to 60 — — 300 to 3 k –0.15 —...
  • Page 25 ¡ Semiconductor MSM7586-01/03 AC Characteristics (CODEC Unit) = 2.7 V to 3.6 V, Ta = –25°C to +70°C) Condition Parameter Symbol Min. Typ. Max. Unit Frequency (Hz) Level dBm0 Other –68 Idle Channel — AIN = SG — — —...

  • Page 26: Timing Diagram

      ¡ Semiconductor MSM7586-01/03 TIMING DIAGRAM (Modem Unit) Transmit Data Input Timing TXCI [TXCO*] (384 kHz) N -2 TXCO in brackets [ ] is when CRM0 - B6 = 1 Transmit Clock (TXCO) Timing (When CRM0 - B6 = 1) TXCI (3.84 MHz)
  • Page 27 ¡ Semiconductor MSM7586-01/03 (CODEC Unit) Transmit Side PCM, ADPCM Timing BCLK XSYNC XDC1 XDC2 XDC3 PCMSO SDXC BCLK XSYNC XDC1 XDC2 XDC3 SDXC Receive Side PCM, ADPCM Timing BCLK RSYNC XDC3 BCLK RSYNC RDC1 RDC2 RDC3 PCMRO SDXC Figure 12 CODEC Unit PCM, ADPCM Interface...
  • Page 28 ¡ Semiconductor MSM7586-01/03 Modem Unit Mode State Transition Time Mode PDN1 = 1 Note: Values not indicated are less than 1 ms. 1 ms Mode Mode PDN1 = 0 PDN1 = 0 Standby mode (PDN0 = 0) PDN2 = 0...
  • Page 29 ¡ Semiconductor MSM7586-01/03 Modem Unit Demodulator Control Timing Diagram (Example) 1st slot Demodulator unit Modulator input data PDN2 "0"       (1) Control ch/ synchronous burst 240 bits (SS + PR = 64 bits) 625 ms...

  • Page 30: Functional Description

    ¡ Semiconductor MSM7586-01/03 FUNCTIONAL DESCRIPTION Control Register Description Table (Modem Unit) (1) CRM0 (Basic Operation Mode Setting) CRM0 — IFSEL1 IFSEL0 — TEST1 TEST0 Initial Value (Note) The initial value is the value set when a reset is applied by the RESET pin.
  • Page 31 ¡ Semiconductor MSM7586-01/03 (2) CRM1 (I and Q Gain Adjustment) CRM1 GAIN3 GAIN2 GAIN1 GAIN0 GAIN3 GAIN2 GAIN1 GAIN0 Initial Value B7 to B4: ..I+ and I- output gain setting: 3 mV steps (refer to Table 4) B3 to B0: ..Q+ and Q- output gain setting: 3 mV steps (refer to Table 4)
  • Page 32 ¡ Semiconductor MSM7586-01/03 (4) CRM3 (I- Output Offset Voltage Adjustment) CRM3 — — — Offset4 Offset3 Offset2 Offset1 Offset0 Initial Value B7 to B3: ..I- output pin offset voltage adjustment (refer to Table 5) B2 to B0: ..Not used...
  • Page 33 ¡ Semiconductor MSM7586-01/03 (6) CRM5 (IC Test) LOCAL LOCAL CRM5 ICT5 ICT4 ICT3 ICT2 ICT1 ICT0 INV1 INV0 Initial Value B7 to B4: ..LSI test control bit Note: Since B7 to B4 of CRM5 are used for LSI testing, they should normally be set to "0".
  • Page 34 ¡ Semiconductor MSM7586-01/03 (CODEC Unit) (1) CRC0 (Basic Operation Mode Settings) CRC0 — — — — — SAO/AOUT Initial Value 0: m-law B7: ......PCM interface companding selection 1: A-law B6, B4, B3, B2, B1: . Not used (These pins are used to test the device. They should be set to "0"...
  • Page 35 B3: ....Receive side PCM signal ON/OFF 0: ON 1: OFF When OFF transmits a PCM idle pattern. B2, B1, B0: .Receive side signal gain adjustment (refer to Table 6) Table 6: Receive/Transmit Gain Settings • MSM7586-01 Transmit Side Gain Receive Side Gain –6 dB –6 dB...
  • Page 36 B4: ..... Tone generator ON/OFF 0: OFF 1: ON B3, B2, B1, B0: . Tone generator Receive side gain adjustment (refer to Table 8) Table 7: Side Tone Gain Settings • MSM7586-01 Side Tone Gain –21 dB –19 dB –17 dB –15 dB...
  • Page 37 ¡ Semiconductor MSM7586-01/03 Table 8: Receive Side Tone Generator Gain Settings • MSM7586-01 Tone Generator Gain Tone Generator Gain –36 dB –20 dB –34 dB –18 dB –32 dB –16 dB –14 dB –30 dB –28 dB –12 dB –26 dB –10 dB...
  • Page 38 ¡ Semiconductor MSM7586-01/03 (5) CRC4 (Tone Generator Operation Mode and Frequency Settings) DTMF/OT TONE SAO/ CRC4 TONE4 TONE3 TONE2 TONE1 TONE0 HERS SEL SEND VFRO Initial Value B7: ......Selection of DTMF signal and other tones (S tone, F tone, R tone, etc.) 0: Other tones 1: DTMF tones B6: ......
  • Page 39 ¡ Semiconductor MSM7586-01/03 (6) CRC5 (Control of Switches, etc.) SW4/5 TOUT3 TOUT2 TOUT1 CRC5 — CONT CONT CONT CONT CONT CONT CONT Initial Value B7, B6: ..SW1, SW2 control 0: Open 1: Closed B5: ....SW3 control 0: Open 1: Closed B4: ....
  • Page 40 ¡ Semiconductor MSM7586-01/03 (8) CRC7 (Detect Register: Read-only) Silent Level Silent Level CRC7 — — — — — Initial Value B7: ......Transmit side voice/silence detection 0: Silence 1: Voice B6, B5: ....Transmit side silence level (indicator) MSM7586-01 (0,0):Below –60 dBm0 (0,1): –50 to –60 dBm0...

  • Page 41: Application Circuit

    ¡ Semiconductor MSM7586-01/03 APPLICATION CIRCUIT MSM7586 VDDM PDN2 VDAM PDN1 VDDC PDN0 VDAC DENM EXCKM SGCR DOUTM SGCT DINM – – – BSTO TXCI MODEM CONT. TXCO 1000 pF IFIN Q– I– SGCT AIN1+ RXSC AIN1– PDN3 GSX1 RESET AIN2...

  • Page 42: Package Dimensions

    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 humidity absorbed in storage. 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).

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