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WM9711 Datasheet(PDF) 56 Page - Wolfson Microelectronics plc |
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WM9711 Datasheet(HTML) 56 Page - Wolfson Microelectronics plc |
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56 / 66 page  WM9711L Production Data w PD Rev 4.1 April 2004 56 Register 3Ah controls the SPDIF output. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 15 V 0 Validity bit; ‘0’ indicates frame valid, ‘1’ indicates frame not valid 14 DRS 0 Indicates that the WM9711L does not support double rate SPDIF output (read-only) 13:12 SPSR 10 Indicates that the WM9711L only supports 48kHz sampling on the SPDIF output (read-only) 11 L 0 Generation level; programmed as required by user 10:4 CC 0000000 Category code; programmed as required by user 3 PRE 0 Pre-emphasis; ‘0’ indicates no pre-emphasis, ‘1’ indicates 50/15us pre-emphasis 2 COPY 0 Copyright; ‘0’ indicates copyright is not asserted, ‘1’ indicates copyright 1 AUDIB 0 Non-audio; ‘0’ indicates data is PCM, ‘1’ indicates non- PCM format (e.g. DD or DTS) 3Ah 0 PRO 0 Professional; ‘0’ indicates consumer, ‘1’ indicates professional Digital Audio (SPDIF) Output Register 4Ch to 54h control the GPIO pins and virtual GPIO signals. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 4Ch all 1 (all inputs) except unused bits Controls GPIO configuration as inputs or as outputs (note: virtual GPIOs can only be inputs) 4Eh all 1 Controls GPIO polarity (actual polarity depends on register 4Ch AND register 4Eh) 50h all 0 (not sticky) Makes GPIO signals sticky 52h all 0 (OFF) Enables wake-up for each GPIO signal 54h = status of GPIO inputs GPIO pin status (read from inputs, write ‘0’ to clear sticky bits) 15 Controls Comparator 1 signal (virtual GPIO) 14 Controls Comparator 2 signal (virtual GPIO) 13-12 Unused 11 Controls Thermal sensor signal (virtual GPIO) 10-6 Unused 5 Controls GPIO5 (pin 48) 4 Controls GPIO4 (pin 47) 3 Controls GPIO3 (pin 46) 2 Controls GPIO2 (pin 45) 1 please refer to the register map Controls GPIO1 (pin 44) GPIO and Interrupt Control Register 56h controls the use of GPIO pins for non-GPIO functions. REG ADDR BIT LABEL DEFAULT DESCRIPTION REFER TO 5 GE5 1 (GPIO) Selects between GPIO5 and SPDIF_OUT function for pin 48 56h 2 GE2 1 (GPIO) Selects between GPIO2 and IRQ function for pin 45 GPIO and Interrupt Control |
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