參數(shù)資料
型號(hào)： AK4650
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
中文描述： 16位ツヒ編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁(yè)數(shù)： 78/86頁(yè)
文件大?。?/td> 824K
代理商： AK4650
[AK4650]
MS0502-E-01
2007/04
- 78 -
ROTM: ALC2 Recovery Waiting Period (Table 39)
0: 2048/fs (default)
1: 512/fs
LMTH: ALC1 Limiter Detection Level / Recovery Waiting Counter Reset Level (Table 15)
Default: “0” (
6dB/
8dB)
The ALC1 limiter detection level and the ALC1 recovery counter reset level may be offset by about
±
2dB.
RGAIN: ALC1 Recovery GAIN Step (Table 20)
Default: “0” (0.5dB)
During the ALC1 recovery operation, RGAIN bit sets the number of steps changed from the current IPGA
value. For example, when the current IPGA value is “30H” and RGAIN bit is “1”, the IPGA changes to “32H”
by the ALC1 recovery operation and the output signal level is gained up by 1dB (=0.5dB x 2). When the IPGA
value exceeds the maximum level (REF5-0 bits), the IPGA value does not increase.
LMAT1-0: ALC1 Limiter ATT Step (Table 16)
Default: “00” (0.5dB)
During the ALC1 limiter operation, when IPGA value exceeds the ALC1 limiter detection level set by LMTH
bit, LMAT1-0 bits set the number of steps attenuated from the current IPGA value. For example, when the
current IPGA value is “47H” and LMAT1-0 bits is “11”, the IPGA value decreases to “43H” when the ALC1
limiter operation starts, resulting in the input signal level being attenuated by 2dB (=0.5dB x 4). When the
attenuation value exceeds IPGA = “00H” (
8dB), it clips to “00H”.
ZELMN: Zero crossing detection enable at ALC1 Limiter operation
0: Enable (default)
1: Disable
When the ZELMN bit = “0”, the IPGA performs a zero crossing or timeout and the IPGA value is changed by
the ALC1 operation. The zero crossing timeout is the same as the ALC1 recovery operation. When the
ZELMN bit = “1”, the IPGA value is changed immediately.
ALC1: ALC1 enable
0: ALC1 Disable (default)
1: ALC1 Enable
ALC2: ALC2 enable
0: ALC2 Disable (default)
1: ALC2 Enable
■
Volume Control (68H)
ATTS2-0: Volume control of signal from IPGA to Headphone/Speaker-Amp (Table 7)
Default: “2H” (
12dB)
ATTM: Volume control of signal from IPGA to Mono Line Output (Table 8)
0: 0dB (default)
1:
4dB
ATS: Digital attenuator transition time setting (Table 26)
Default: “0” (531/fs)
相關(guān)PDF資料
PDF描述
AK4650VG 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
AK4651 16Bit ツヒ CODEC with MIC/HP/SPK-AMP
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AK4665A 20-Bit Stereo CODEC with MIC/HP-AMP
AK4665AEN 20-Bit Stereo CODEC with MIC/HP-AMP
相關(guān)代理商/技術(shù)參數(shù)
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AK4650VG 制造商:AKM 制造商全稱:AKM 功能描述:16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
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AK4664VQ 功能描述:IC CODEC STEREO 20BIT LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購(gòu)買時(shí)間 標(biāo)準(zhǔn)包裝:1,000
AK4665A 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with MIC/HP-AMP
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