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CDB4340 데이터시트(PDF) 10 Page - Cirrus Logic |
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CDB4340 데이터시트(HTML) 10 Page - Cirrus Logic |
10 / 28 page CS4340 10 DS297PP3 SWITCHING CHARACTERISTICS (VA = 2.7 V - 5.5 V; Inputs: Logic 0 = 0 V, Logic 1 = VA, CL = 20 pF; for -KS parts TA = -10 to 70°C; for -BS parts TA = -40 to 85°C) Notes: 11. In Internal SCLK Mode, the Duty Cycle must be 50% +/− 1/2 MCLK Period. 12. The SCLK / LRCK ratio may be either 32, 48, or 64. This ratio depends on part type and MCLK/LRCK ratio. (See figures 16-19) Parameters Symbol Min Typ Max Units Input Sample Rate Base-Rate Mode High-Rate Mode Fs 2 50 - - 50 100 kHz kHz MCLK Pulse Width High MCLK/LRCK = 512 10 - 1000 ns MCLK Pulse Width Low MCLK/LRCK = 512 10 - 1000 ns MCLK Pulse Width High MCLK / LRCK = 384 or 192 21 - 1000 ns MCLK Pulse Width Low MCLK / LRCK = 384 or 192 21 - 1000 ns MCLK Pulse Width High MCLK / LRCK = 256 or 128 31 - 1000 ns MCLK Pulse Width Low MCLK / LRCK = 256 or 128 31 - 1000 ns External SCLK Mode LRCK Duty Cycle (External SCLK only) 40 50 60 % SCLK Pulse Width Low tsclkl 20 - - ns SCLK Pulse Width High tsclkh 20 - - ns SCLK Period MCLK / LRCK = 512, 256 or 384 tsclkw -- ns SCLK Period MCLK / LRCK = 128 or 192 tsclkw -- ns SCLK rising to LRCK edge delay tslrd 20 - - ns SCLK rising to LRCK edge setup time tslrs 20 - - ns SDATA valid to SCLK rising setup time tsdlrs 20 - - ns SCLK rising to SDATA hold time tsdh 20 - - ns Internal SCLK Mode LRCK Duty Cycle (Internal SCLK only) (Note 11) - 50 - % SCLK Period (Note 12) tsclkw -- ns SCLK rising to LRCK edge tsclkr -- µs SDATA valid to SCLK rising setup time tsdlrs -- ns SCLK rising to SDATA hold time MCLK / LRCK = 512, 256 or 128 tsdh -- ns SCLK rising to SDATA hold time MCLK / LRCK = 384 or 192 tsdh -- ns 1 128 ()Fs ---------------------- 1 64 ()Fs ------------------ 1 SCLK ---------------- tsclkw 2 ------------------ 1 512 ()Fs ----------------------10 + 1 512 ()Fs ----------------------15 + 1 384 ()Fs ----------------------15 + |
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