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WM8311 Datasheet(PDF) 104 Page - Wolfson Microelectronics plc |
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WM8311 Datasheet(HTML) 104 Page - Wolfson Microelectronics plc |
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104 / 302 page  WM8311 Pre-Production w PP, May 2012, Rev 3.1 104 ADDRESS BIT LABEL DEFAULT DESCRIPTION R16463 (404Fh) Current Sink 2 11:10 CS2_OFF_RA MP 01 ISINK2 Switch-Off ramp 00 = instant (no ramp) 01 = 1 step every 4ms (220ms) 10 = 1 step every 8ms (440ms) 11 = 1 step every 16ms (880ms) The time quoted in brackets is valid for the maximum change in current drive setting. The actual time scales according to the extent of the change in current drive setting. 9:8 CS2_ON_RAM P 01 ISINK2 Switch-On ramp 00 = instant (no ramp) 01 = 1 step every 4ms (220ms) 10 = 1 step every 8ms (440ms) 11 = 1 step every 16ms (880ms) The time quoted in brackets is valid for the maximum change in current drive setting. The actual time scales according to the extent of the change in current drive setting. Table 50 Configuring On/Off Ramp Timing for ISINK1 and ISINK2 16.3 CURRENT SINK INTERRUPTS The Current Sinks are associated with two Interrupt event flags, which indicate if the Current Sinks are unable to sink the demanded current (eg. if the power source is too low or if the load is open circuit). Each of these secondary interrupts triggers a primary Current Sink Interrupt, CS_INT (see Section 23). This can be masked by setting the mask bit(s) as described in Table 51. ADDRESS BIT LABEL DESCRIPTION R16402 (4012h) Interrupt Status 2 7 CS2_EINT Current Sink 2 interrupt (Rising Edge triggered) Note: Cleared when a ‘1’ is written. 6 CS1_EINT Current Sink 1 interrupt (Rising Edge triggered) Note: Cleared when a ‘1’ is written. R16410 (401Ah) Interrupt Status 2 Mask 7 IM_CS2_EINT Interrupt mask. 0 = Do not mask interrupt. 1 = Mask interrupt. Default value is 1 (masked) 6 IM_CS1_EINT Interrupt mask. 0 = Do not mask interrupt. 1 = Mask interrupt. Default value is 1 (masked) Table 51 Current Sink Interrupts |
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