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LCR1210-R100F データシート(PDF) 30 Page - Skyworks Solutions Inc. |
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LCR1210-R100F データシート(HTML) 30 Page - Skyworks Solutions Inc. |
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30 / 59 page  Si32260/1 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 30 Rev. 1.4 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 7, 2021 4. Functional Description Figure 20. Functional Block Diagram The Si32260/1 dual ProSLIC devices provide all SLIC, codec, DTMF detection, and signal generation functions needed for two complete analog telephone interfaces. They perform all battery, over-voltage, ringing, supervision, codec, hybrid, and test (BORSCHT) functions, and also support extensive metallic loop testing capabilities. The Si32260/1 both provide a standard voice-band (200 Hz–3.4 kHz) audio codec and, optionally, an audio codec with both wideband (50 Hz–7 kHz) and standard voiceband modes. The wideband mode provides an expanded audio band with a 16 kHz sample rate for enhanced audio quality while the standard voice-band mode provides standard telephony audio bandwidth. The Si32260/1 devices incorporate two programmable dc-dc converter controllers that can operate in either battery tracking mode or a shared rail mode. In both the battery tracking and the shared rail modes the dc-dc converter controllers react to line conditions to provide the optimal battery voltage required for each line-state. Multiple Si32260/1 devices can also operate from fixed rail supplies controlled either by one of the integrated dc-dc controllers or by an external dc-dc controller. The Si32260/1 devices are available with voltage ratings of –110 or –140 V to support a wide range of ringing voltages. See Section "8. Ordering Guide‚" on page 45 for the voltage rating of each version. Programmable on-hook voltage, programmable offhook loop current, reverse battery operation, loop or ground start operation, and on-hook transmission are supported. Loop current and voltage are continuously monitored by an integrated monitoring ADC. The Si32260/1 dual ProSLIC devices support balanced and unbalanced 5 REN ringing with or without a programmable dc offset, and can operate in low power ringing and adaptive ringing modes. The available offset, frequency, waveshape, and cadence options are designed to ring the widest variety of terminal devices and to reduce external controller requirements. A complete audio transmit and receive path is integrated, including ac impedance and hybrid gain. These features are software-programmable, allowing a single hardware design to meet global requirements. SPI Control Interface PCM/ GCI Interface DSP DTMF & Tone Gen Caller ID Ringing Generator ADC DAC CODEC SLIC Linefeed Control Linefeed Monitor DC-DC Controller Line Diagnostics PLL PCLK FSYNC DRX DTX CS SDI SDO SCLK INT RST SPI Control Interface PCM/ GCI Interface DSP DTMF & Tone Gen Caller ID Ringing Generator ADC DAC CODEC DC-DC Controllers Line Diagnostics PLL PCLK FSYNC DRX DTX CS SDI SDO SCLK INT RST Si32260/1 DAC RING TIP Channel A CODEC SLIC DAC RING TIP Channel B CODEC SLIC ADC ADC Linefeed Control Linefeed Monitor Linefeed Control Linefeed Monitor |
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