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ZL38070GBG Datasheet(PDF) 2 Page - Zarlink Semiconductor Inc |
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ZL38070GBG Datasheet(HTML) 2 Page - Zarlink Semiconductor Inc |
2 / 51 page ZL38070 Data Sheet 2 Zarlink Semiconductor Inc. Description The ZL38070 Voice Echo Canceller implements a cost effective solution for telephony voice-band echo cancellation conforming to ITU-T G.168 requirements. The ZL38070 architecture contains 128 groups of two echo cancellers (ECA and ECB) which can be configured to provide two channels of 64 milliseconds or one channel of 128 milliseconds echo cancellation. This provides 256 channels of 64 milliseconds to 128 channels of 128 milliseconds echo cancellation or any combination of the two configurations. The ZL38070 supports ITU-T G.165 and G.164 tone disable requirements. Figure 2 - Single Echo Voice Processor (EVP) Overview RESET Rout IC0 Sout DS CS R/W A12-A0 DTA D7-D0 Echo Canceller Pool VSS VDD1 (3.3V) TDI TDO TCK TRST TMS Rin IRQ C4i F0i MCLK ODE Sin Fsel Test Port Microprocessor Interface Timing Unit Serial to Parallel Parallel to Serial PLL Group 0 ECA/ECB Group 4 ECA/ECB Group 8 ECA/ECB Group 12 ECA/ECB Group 1 ECA/ECB Group 5 ECA/ECB Group 9 ECA/ECB Group 13 ECA/ECB Group 2 ECA/ECB Group 6 ECA/ECB Group 10 ECA/ECB Group 14 ECA/ECB Group 3 ECA/ECB Group 7 ECA/ECB Group 11 ECA/ECB Group 15 ECA/ECB Note: Refer to Figure 4 for EVP block diagram VDD2 (1.8V) |
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