msm7617 Oki Semiconductor, msm7617 Datasheet
msm7617
Related parts for msm7617
msm7617 Summary of contents
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... When used as a line echo canceler, the MSM7617 can cancel line echoes returned by hybrid impedance mismatches. By setting its mode for use as a single cross-connected channel, the MSM7617 can cancel both acoustic and line echoes. Also, the MSM7617 can improve voice communication by using its howling detection, double- talk detection, attenuation, and gain control functions to prevent and suppress howling levels, and by using its center clipping function to suppress low level noise ...
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... RIN-ROUT input/output levels. •Cancelable echo delay time: •Echo attenuation: •Clock frequency: •Power supply voltage: •Package: •Product name (max (typ MHz 19.2 MHz if using internal clock signal 4.5 to 5.5 V 64-pin plastic QFP (QFP64-P-1414-0.80-BK) MSM7617-001GS-BK (m-law) MSM7617 2/28 ...
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... EC-B Controller 2-channel serial I/O mode CH1 RIN ROUT RIN1 ROUT1 AFF SOUT SIN SOUT1 SIN1 + CH2 RIN ROUT AFF SOUT SIN + MSM7617 Linear/ P/S ROUT1 Non-linear DF1 2100 Hz Tone, Phase Reverse CH1 WDT1 Detector Non-linear/ S/P SIN1 SA Linear Linear/ P/S ROUT2 Non-linear DF2 2100 Hz Tone, ...
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... ADP2 2 HCL2 3 SYNC2 NLP2 6 IOM0 7 IOM1 8 SCK 9 ECM 10 NLP1 SYNC1 13 HCL1 14 ADP1 15 RST1 16 64-Pin Plastic QFP MSM7617 48 V (PLL (PLL CLKIN TST PWDWN 42 41 ECDM1 40 ECDM0 39 SCKO 38 SYNCO ...
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... It is effective for reducing uncanceled echoes and low-level noise. "H": Center clipping on "L": Center clipping off Sets I/O mode of PCM data. IOM1 IOM0 Mode Setting 0 0 2-channel parallel I/O mode 0 1 2-channel serial I/O mode 1 0 1-channel cross-connected mode 1 1 Inhibited MSM7617 5/28 ...
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... Input signals are invalid for 100 ms after reset (after RST returns to "H" from "L") for setting initial values. Input the base clock during reset. Output pins will be placed in the following states during reset. Hi-Z: ROUT1, SOUT1 No effect: SYNCO, SCKO, ROUT2, SOUT2, DF2, WDT2 Previous state: DF1, WDT1 MSM7617 6/28 ...
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... In 2-channel parallel I/O mode, this pin becomes SOUT for channel 1 and outputs the PCM signal synchronous with SYNC1. In 2-channel serial I/O mode, this pin outputs the SOUT signal as a multiplexed PCM signal of SOUT signal for channel 1 and channel 2 synchronous with SYNC1. In 1-channel cross-connected mode, this pin becomes high impedance. MSM7617 7/28 ...
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... PCM signal synchronous with SYNC1. In 2-channel serial I/O mode, this pin sequentially inputs RIN as a multiplexed PCM signal from channel 1 and channel 2 synchronous with SYNC1. In 1-channel cross- connected mode, this pin is not used, and should be fixed at "L". Data is captured on the falling edge of SCK. MSM7617 8/28 ...
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... Inhibited 1 1 ±6LR: On Applies – excessive inputs using the level adjuster provided on R and S I/O. Since +6 dB also is applied at the output, the total level will not change, making this effective against line echo. MSM7617 9/28 ...
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... Normal operation During power-down mode all input pins are invalid, and output pins will enter the following states. Hi-Z: SOUT1, SOUT2, ROUT1, ROUT2 "L": SYNCO, SCKO Previous state: DF1, WDT1, DF2, WDT2 Reset the device after power-down mode is released. MSM7617 10/28 ...
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... Inhibited 1 1 ±6LR: On Apply – excessive inputs using the level adjuster provided on R and S I/O. Since +6 dB also is applied at the output, the total level will not change, making this effective against line echo. MSM7617 11/28 ...
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... In 2-channel parallel I/O mode, this pin becomes ROUT for channel 2 and outputs the PCM signal synchronous with SYNC2. In 2-channel serial I/O mode, this pin is not used and should be left open. In 1-channel cross- connected mode, this pin becomes the cross-connected ROUT pin for channel 2, and outputs the PCM signal synchronous with SYNC1. MSM7617 12/28 ...
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... Because the attenuator is activated opposite the speaker effective for further reducing echo. Howling detection control pin for channel 2. This pin controls detection and canceling of howling generated by the acoustics of handsfree telephones. "L": Howling detector on "H": Howling detector off MSM7617 13/28 ...
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... OZH OZL — DDO PWDWN = "L" I DDS C — — LOAD MSM7617 Rating Unit –0 –0 0 –55 to +150 ° 4 5 Min. Typ. Max. Unit 4.5 5 5.5 V — 0 — V 2.4 — ...
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... Detection time 380 Detection condition 2100Hz. 180° out-of-phase detected before and after 450±25ms. Detection frequency 2075 Detection level –32 Phase reversal 135 Detection level — Release time — MSM7617 Min. Typ. Max. Unit — 30 — dB — — Typ. ...
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... CYC t 45 — — — WSY SCK t 45 — — — SCK t — 15t ID2 SCK MSM7617 Max. Unit — MHz 20 — ns 55. ¥ 0.6 ns MCK ¥ 0 MCK — kHz — µs — — ...
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... DIT t — — DPS t — — DPE t 10 — WPR t 20 — DSR t 20 — DHR t 120 — DCS t 120 — DCH MSM7617 Max. Unit — µs — — µs 111 — — ns — ns — ns — ns ...
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... Semiconductor TIMING DIAGRAMS Clock Timing MCK DMC CLKIN SCKO SCKO t t DCC DCC SYNCO t WSO t t MCH MCL t DCM t DCO t CYO MSM7617 DCM 18/28 ...
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... Note: Refer to parallel mode for detailed timing SCK SCK SCK t WSY SYNC1 RIN1 SIN1 CH1 data , t t SCK DSC t CYC CYC t ID2 CH2 data MSM7617 LSB MSB 19/28 ...
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... Operation Timing After Reset t WR RST t DRS Internal operation Reset , t t SCK SCK DSC t CYC SCK t CYC CH2 data Note: Reset timing can be asynchronous. t DIT t DRE Initial setting MSM7617 t XD LSB 0 High-Z High Proccessing starts 20/28 MSB 7 ...
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... Control pin states are captured during reset and during each period’s serial data capture. RST Control Pin SCK t SYNC Channel 1 Control Pin Channel 2 Control Pin (when not in serial mode) Channel 2 Control Pin (when in serial mode) Power-down DSR t ID2 ID t DCH t DCS MSM7617 t DPE t WPR t DHR t DCH t DCS 21/28 ...
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... Semiconductor HOW TO USE THE MSM7617 The echo canceler cancels the echo on the RIN signal as returned by SIN. Connect the original signal to the R side, and the signal generating the echo to the S side. Connection Methods According to Echoes Example 1. Cancel Acoustic Echo (applies to acoustic echo from line input) ...
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... RIN input level = –10 dBm0 white noise Echo delay time = 50 ms E.R ATT, GC, NLP, LR all off [dBm0] = 0.85 [Vrms] = 2.4 [Vp-p] = 0.8 [dBm] 600 W –10 [dBm0] = 0.27 [Vrms] = 0.76 [Vp-p] = –9.2 [dBm] 600 W 0 [dBm0] = 0.6007 [Vrms] = 1.7 [Vp-p] = –2.2 [dBm] 600 W –10 [dBm0] = 0.19 [Vrms] = 0.54 [Vp-p] = –12.2 [dBm] 600 W MSM7617 0 10 RIN Input level [dBm0] 23/28 ...
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... Semiconductor Measurement System Block Diagram White noise generator kHz Level Meter MSM7617 RIN ROUT CH1 or CH2 SOUT SIN 2ch CODEC MSM7533 MSM7617 Echo Delay Time Delay ATT 24/28 ...
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... For power-on reset operation, an external oscillator may require a certain setting time after powered on. Allow 10 ms for a reset time after the oscillator has settled. 7. When the device is used as an acoustic echo canceler, equipment noise and environment noise from the microphone amp may be amplified, and echo attenuation may be below 30 dB. MSM7617 25/28 ...
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... V V (PLL GND V (PLL ch2 RST ch3 RST ch4 RST MSM7617 22 23 RIN1 20 19 SIN1 SOUT1 59 58 RIN2 61 62 SIN2 SOUT2 4 13 SYNC1 9 SCK 49 32 WDT1 50 31 DF2 DF1 6 11 NLP2 ...
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... MSM7617 R5 C2 Line Input Line Output DV AV ( ...
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... 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). MSM7617 (Unit : mm) Package material Epoxy resin ...
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NOTICE 1. The information contained herein can change without notice owing to product and/or technical improvements. Before using the product, please make sure that the information being referred to is up-to-date. 2. The outline of action and examples for application ...