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ALC5642R-VF-CG 数据表(PDF) 56 Page - Realtek Semiconductor Corp. |
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ALC5642R-VF-CG 数据表(HTML) 56 Page - Realtek Semiconductor Corp. |
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56 / 156 page  ALC5642-VF Datasheet Multi-Channel Audio Hub/CODEC with embedded Voice DSP and SounzReal TM Digital Sound Effect 44 Rev. 0.93 The MICBIAS supports short detection function. When MICBIAS circuit is short, MICBIAS circuit will generate an over-current flag. The flag can generate an interrupt signal to notice host and let S/W do follow-up processes. For jack detection function as shown Figure 25. There are two internal JD status can be set. For sta_jd_internal – MX-BF[4], there are four pins can as jack detection source - GPIO1, GPIO2, JD1 (share with IN1N) and JD2 (share with IN2N). The source selection control is at MX-BB[15:13]. For another JD status – sta_jd2_internal – MX-FB[11] is dedicated for JD2 pin. And the enable control is by MX-FB[8]. Owing to JD2 can as sta_jd_internal status and also can as sta_jd2_internal status, JD2 can ’t be used together for these two status. MX-BB[15:13] MX-BF[4] Sta_jd_internal JD1 JD2 GPIO1 GPIO2 EN_JD2 MX-FB[8] MX-FB[11] Sta_jd2_internal Figure 26. JD Source Selection The jack detect function can be used to turn-on or turn-off the related output ports. When jack detect pin is trigged, the selected output ports will be turn-on or turn-off. For example on HP and SPK auto switch when JD is trigger. Setting procedure: 1. Select JD source: use JD1 as JD source. MX-BB[15:13] = 010 ’b 2. Set wanted behavior by JD action – HP & SPK auto switch when JD is trigger. MX-BB[11:6] = 111010 ’b 3. When JD status is low, HP_OUT is mute and SPK is un-mute. When JD status is low go high, HP is un-mute and SPK is mute. Note: For HP and SPK jack switch function, driver need to turn-on DAC to HP path and DAC to SPK path first. The register control of MX-BB[11:6] is only do mute/un-mute function for HP and SPK. |
类似零件编号 - ALC5642R-VF-CG |
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类似说明 - ALC5642R-VF-CG |
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