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¡ Semiconductor

MSM7586-01/03

1/42

¡ 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

DD

: 2.7 V to 3.6 V)

• Low power consumption

When entire system is operating: 20 mA Typ.
When powered down:

0.02 mA Typ.

• Package:

100-pin plastic TQFP (TQFP100-P-1414-0.50-K)

(Product name: MSM7586-01TS-K)
(Product name: MSM7586-03TS-K)

E2U0034-28-82

This version: Aug. 1998

Previous version: Nov. 1996

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Содержание MSM7586-01

Страница 1: ...fset 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 Recommendation...

Страница 2: ...BSTO SGM SGCT IO2 IO1 SW1 SW2 VDAC SAO GSX3 AIN3 GSX4 AIN4 CODEC MCU interface To each block VOXI TOUT2 TOUT1 RESET PDN3 AGC DGC VDAC VDDC IO7 IO6 SW5 IO5 SW4 IO4 IO3 SW3 EXCKC DENC DINC DOUTC VREF DP...

Страница 3: ...M AGC SGCR SGCT AIN1 AIN1 GSX1 IO5 IO6 IO7 AIN2 GSX2 IO1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 IO2 VFRO PWI AOUT AOUT 21 22 23 24 25 NC TXW TXD TXCO TXCI NC BSTO DGM DGC R7 R6 R5 R4 NC BC...

Страница 4: ...to TXCL TXCO outputs a 384 kHz clock pulse which is generated by dividing the TXCL input by 10 The transmit data synchronous to the 384 kHz clock pulse shouldbeinputtotheTXD Inthiscasethedevicesdonotu...

Страница 5: ...RM0 B6 1 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 Dn 1 Dn D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 Dn 1 Dn Ramprise up 2symbols Ramp Fall down 2 symbols Delay of 6 25 symbols Delay of 6 25 s...

Страница 6: ...e at the I pin can be adjusted using CRM3 B7 to B3 Q Q Quadrature modulation signal Q component differential analog outputs Their output levels are 500 mVpp when TXD 0 360 mVpp typ with 1 6 Vdc as the...

Страница 7: ...tion State 0 0 1 1 Mode A 1 0 0 Mode D 1 1 1 Mode G Standby Mode Entire system is powered down The control register is reset 0 0 0 Mode B Entire system is powered down The control register is not rese...

Страница 8: ...close as possible on the circuit board MCK Master clock input The clock frequency is 19 2 MHz IFIN Modulated signal input for the demodulator block SelecttheIFfrequencycanbeselectedfrom1 2MHz 10 7MHz...

Страница 9: ...circuits and two AFC data memory registers If SLS is 0 slot 1 is selected if SLS is 1 slot 2 is selected RPR High speed phase clock control signal input for the clock recovery circuit If this pin is a...

Страница 10: ...make any phase corrections AFC AFC information is reset RPR Average number of times AFC is low AFC information is maintained AFC RPR AFC information is maintained The clock recovery circuit starts wit...

Страница 11: ...egister R7 R6 R5 R4 These are the control register data output pins These output the data CRM2 B7 B6 B5 and B4 respectively Register Name Address A2 A1 A0 Data Description R W B7 B6 B5 B4 B3 B2 B1 B0...

Страница 12: ...nal transmit amplifier See Fig 6 for gain adjustment VFRO AOUT AOUT PWI Used for the receive analog output and the output for receive gain adjustment VFROisanoutputofthereceivefilter AOUT andAOUT ared...

Страница 13: ...signal Vo Receive gain VO VVFRO 2 R6 R5 ZL 120 nF 350 W AIN2 GSX2 R4 C2 R3 AOUT R6 AOUT AIN1 1 C1 R1 R2 Reference voltage generator SGCT from DECODER Vi Differential analog input signal R5 1 VFRO 1 SA...

Страница 14: ...down theoutputchangesto0V TheexternalSGvoltageifnecessaryshouldbeusedviaabuffer VDDC VDAC CODEC unit 3 V power supply VDDC is supplied to the digital system power supply and VDAC is supplied to the an...

Страница 15: ...tput This signal is the output signal after ADPCM encoding and is serially output from MSB synchronous with the rising edge of BCLK and XSYNC This pin is an open drain output which remains in a high i...

Страница 16: ...ars at analog output pins The L level indicates the absenceofvoicesignal thebackgroundnoisegeneratedinthisdeviceistransferredtotheanalog output pins The background noise amplitude is set by the contro...

Страница 17: ...R A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0 DENC EXCKC DINC DOUTC Figure 8 CODEC Unit MCU Interface I O Timing The register map is shown below Register Name Address A2 A1 A0 Data Description R W B7 B6 B5 B4 B3...

Страница 18: ...nc Pulse Setting Time Receive Sync Pulse Setting Time Synchronous Signal Width PCM ADPCM Set up Time PCM ADPCM Hold Time Symbol VDD Ta VIH VIL tIr tIf RDL CDL CSG FMCK DMCK FTXC1 FTXC2 FIFCK1 FIFCK2 D...

Страница 19: ...n VDD 3 0 V 5 5 11 0 mA IDD3 Mode D When VDD 3 0 V 5 5 11 0 mA IDD4 Mode E When VDD 3 0 V 11 5 23 0 mA IDD5 Mode F When VDD 3 0 V 9 5 19 0 mA IDD6 Mode G When VDD 3 0 V 14 0 28 0 mA Power Supply Curre...

Страница 20: ...g continuous 60 dB P900 900 kHz detuning continuous 65 dB Modulation Accuracy EVM 1 0 3 0 rms Demodulator Side IF Input Level IFV IFIN input level 0 4 VDD VPP IFIN Input Impedance RIF 20 kW SGM Output...

Страница 21: ...DD 2 7 V to 3 6 V Ta 25 C to 70 C tXDM3 4 0 400 ns Reference C load 50 pF Fig 9 Receive Digital I O Setting Time tRDM1 2 C load 50 pF Fig 10 0 200 ns tM1 50 ns tM2 50 ns tM3 50 ns tM4 50 ns Serial Por...

Страница 22: ...X4 VOFC2 20 20 mV GSX1 GSX2 AOUT AOUT GSX3 GSX4 1 2 kW RLC3 GSX3 150 W 100 pF CLC3 GSX3 100 pF VOC2 1 3 VPP AOUT AOUT GSX4 RL 1 2 kW VOC3 1 3 VPP GSX3 RL 150 W Analog Switch OFF Resistance RSWof 50 MW...

Страница 23: ...Symbol tSDXC tSDRC Condition Min 0 Typ Max 200 100 Unit ns VDD 2 7 V to 3 6 V Ta 25 C to 70 C tXDC1 tRDC1 0 ns Reference tXDC2 tRDC2 Fig 12 0 ns tC1 50 ns tC2 50 ns tC3 50 ns tC4 50 ns Serial Port Di...

Страница 24: ...SD T4 28 SD T5 23 Receive Signal to Distortion Ratio 2 SD R1 SD R2 SD R3 SD R4 SD R5 Transmit Gain Tracking GT T1 0 2 0 2 GT T2 Reference GT T3 0 2 0 2 GT T4 0 5 0 5 GT T5 1 2 1 2 Receive Gain Tracki...

Страница 25: ...ransmit VOX Detection Level Accuracy Voice Detection Level Voice silence differential 10 dB 6 AC Characteristics VOX Function PSRRT Noise frequency 0 kHz to 50 kHz 30 dB Power Supply Noise Rejection R...

Страница 26: ...r Side Digital I O Timing Serial Port Timing for Microcontroller Interface Figure 11 Modem Unit Serial Control Port Interface tXSM tDSM tDHM 1 2 3 N 2 N 1 N N 1 TXCI TXCO 384 kHz TXW TXD 1 tSXM 2 3 N...

Страница 27: ...e 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 0 tXDC1 tXDC2 tWSC tSXC tXSC tSDXC MSB LSB tXSC tSXC tXDC1 tXDC2 MSB LSB tXDC3 tXDC3 tSDXC BCLK XSYNC PCMSO BCLK XSYNC IS 0 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6...

Страница 28: ...sition Time Mode B Mode C 1 ms Mode D 5 ms Mode F 5 ms PDN1 0 PDN2 0 PDN1 0 PDN2 1 Mode E 40 ms PDN1 1 PDN2 0 Mode G PDN1 1 PDN2 1 Standby mode PDN0 0 Communication mode PDN0 1 Note 40 ms 5 ms Mode A...

Страница 29: ...PR PR UW CR CR G G G G G G G G AFC RPR RCW RXD AFC RPR RCW 240 bits 625 ms 64 bits 56 bits 1 Control ch synchronous burst SS PR 64 bits AFC RPR RCW G G G G G G G G R R R R SS SS PR PR PR UW CR CR G G...

Страница 30: ...XD is input synchronized to the rise of TXCI APLL is ON 1 TXCI input 3 84 MHz TXCO output 384 kHz TXCI divided by 10 Transmission data TXD is input synchronized to the rise of TXCO APLL is OFF B5 Modu...

Страница 31: ...B6 B7 Qch GAIN0 0 0 0 0 0 0 0 Ich GAIN3 0 CRM1 Initial Value Ich GAIN2 Ich GAIN1 Ich GAIN0 Qch GAIN3 Qch GAIN2 Qch GAIN1 CRM1 B7 B6 B5 B4 Description CRM1 B3 B2 B1 B0 0 1 1 1 Amplitude value 1 042 re...

Страница 32: ...0 1 39 mV 1 9 mV 0 1 1 0 0 36 mV 1 12 mV 0 1 0 1 1 33 mV 1 15 mV 0 1 0 1 0 30 mV 1 18 mV 0 1 0 0 1 27 mV 1 21 mV 0 1 0 0 0 24 mV 1 24 mV 0 0 1 1 1 21 mV 1 27 mV 0 0 1 1 0 18 mV 1 30 mV 0 0 1 0 1 15 m...

Страница 33: ...ystem configuration 0 0 Normal mode 1 1 Local inverted mode B1 Waveform shaping mode switching bit of the oscillator circuit unit clock When using a master clock external input increase the X1 pin inp...

Страница 34: ...both powered ON 2 CRC1 ADPCM Unit Operation Mode Settings B7 B6 ADPCM unit compression algorithm selection 0 0 32 kbps 0 1 64 kbps G 711 through 1 0 24 kbps 1 1 16 kbps B5 Transmit side ADPCM reset a...

Страница 35: ...B 0 1 0 0 1 1 0 dB 0 1 1 1 0 0 2 dB 1 0 0 1 0 1 4 dB 1 0 1 1 1 0 6 dB 1 1 0 1 1 1 8 dB 1 1 1 4 dB 2 dB 0 dB 2 dB 4 dB 6 dB 8 dB B6 B5 B4 Transmit Side Gain B2 B1 B0 Receive Side Gain 0 0 0 6 dB 0 0 0...

Страница 36: ...B2 B1 B0 Tone generator Receive side gain adjustment refer to Table 8 Table 7 Side Tone Gain Settings MSM7586 01 B0 TONE GAIN0 0 B1 TONE GAIN1 B2 TONE GAIN2 B3 TONE GAIN3 B4 TONE ON OFF B5 Side Tone...

Страница 37: ...0 0 0 20 dB 0 0 0 34 dB 0 0 1 32 dB 0 0 1 30 dB 0 1 0 28 dB 0 1 0 26 dB 0 1 1 24 dB 1 1 1 22 dB 18 dB 16 dB 14 dB 12 dB 10 dB 8 dB 6 dB B0 0 1 0 1 0 1 0 1 B3 B2 B1 1 0 0 1 0 0 1 0 1 1 0 1 1 1 0 1 1 0...

Страница 38: ...ne 0 1 0 1 0 0 1 0 1 1 0 1 1 0 0 0 1 1 0 1 0 1 1 1 0 0 1 1 1 1 1000 Hz Single tone B4 B3 B2 B1 B0 Description 1 0 0 0 0 0 0 0 1 1300 Hz Single tone 0 0 1 0 1333 Hz Single tone 0 0 1 1 0 1 0 0 0 1 0 1...

Страница 39: ...to Fig 7 settings 0 160 ms 1 320 ms B3 Receive side VOX input signal 0 Internal background noise transmit 1 Voicereceivesignaltransmit When using this data set the VOXI pin to 0 B2 Receive side backg...

Страница 40: ...ndicator MSM7586 01 0 0 Below 60 dBm0 0 1 50 to 60 dBm0 1 0 40 to 50 dBm0 1 1 Above 40 dBm0 MSM7586 03 0 0 Below 50 dBm0 0 1 40 to 50 dBm0 1 0 30 to 40 dBm0 1 1 Above 30 dBm0 Note These outputs are en...

Страница 41: ...M VDDC VDAC SGM SGCR SGCT AGC DGC AGM DGM IFIN Q Q I I AIN1 AIN1 GSX1 AIN2 GSX2 AOUT AOUT PWI VFRO SAO AIN3 GSX3 AIN4 GSX4 TOUT1 TOUT2 TOUT3 MCK IFCK X1 100 1 30 29 7 10 11 9 67 8 68 97 2 3 4 5 12 13...

Страница 42: ...nting 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 mountin...

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