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CS4399 датащи(PDF) 75 Page - Cirrus Logic |
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CS4399 датащи(HTML) 75 Page - Cirrus Logic |
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75 / 111 page ![]() DS1113F1 75 CS4399 7.2 PLL Registers 7.2 PLL Registers 7.1.9 Power Down Control Address 0x20000 R/W 76543210 PDN_XSP PDN_ASP PDN_DSDIF PDN_HP PDN_XTAL PDN_PLL PDN_CLKOUT — Default 11111110 Bits Name Description 7 PDN_XSP XSP input path power control. Configures XSP SDIN path power state. 0 Powered up. 1 (Default) Powered down. 6 PDN_ASP ASP input path power control. Configures ASP SDIN path power state. 0 Powered up. 1 (Default) Powered down. 5 PDN_DSDIF DSD interface power control. Sets the power state of the DSD interface block. 0 Powered up. 1 (Default) Powered down. 4 PDN_HP Power down AOUTx. 0 Powered up. The DACx are powered up. 1 (Default) Powered down. The DACx are powered down. When this bit is set, the audio outputs are soft ramped to mute. 3 PDN_XTAL Power down crystal oscillator. 0 Powered up. The XTAL driver is powered up to start generating MCLK. 1 (Default) Powered down. The XTAL driver is powered down. 2 PDN_PLL PLL output power control. Sets the power state of the PLL block. 0 Powered up. 1 (Default) Powered down. PLL block is powered down. 1PDN_ CLKOUT CLKOUT output power control. Sets the power state of the CLOCKOUT output. 0 Powered up 1 (Default) Powered down. CLKOUT are driven low. 0— Reserved 7.1.10 Crystal Setting Address 0x20052 R/W 76543210 — XTAL_IBIAS Default 00000100 Bits Name Description 7:3 — Reserved 2:0 XTAL_IBIAS Crystal bias current strength. 010 15.0 µA 100 (Default) 12.5 µA 110 7.5 µA Others Reserved 7.2.1 PLL Setting 1 Address 0x30001 R/W 76543210 — PLL_START Default 00000000 Bits Name Description 7:1 — Reserved 0 PLL_START PLL start bit. Enable PLL output after it has been properly configured. 0 (Default) PLL is not started 1 PLL is started |
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