wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 150

• Manufacturer Part Number: wm8352
• Description: Wolfson Audioplus? Stereo Codec With Power Management
• Manufacturer: Wolfson Microelectronics plc

WM8352
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16.2.4
The sink currents for ISINKA and ISINKB can be programmed to switch on and off gradually in LED
and in Flash modes. The current ramp durations are set as described in Table 98.
R173 (ADh) for
ISINKA
R175 (AFh) for
ISINKB
Note: n is either ‘1’ for ISINKA or ‘2’ for ISINKB
Table 98 Configuring On/Off Ramp Timing for ISINKA and ISINKB
16.2.5
The Current Sinks have a first-level interrupt, CS_INT (see Section 24). This comprises two second-
level interrupts which indicate if the Current Sinks are unable to sink the amount of current that has
been programmed. CS1_EINT and CS2_EINT can be masked by setting the applicable mask bit as
defined in Table 99.
R26 (1Ah)
Interrupt Status
2
R34 (22h)
Interrupt Status
2 Mask
Table 99 Current Sink Interrupts
ADDRESS
ADDRESS
ON/OFF RAMP TIMING
INTERRUPTS AND FAULT PROTECTION
13:12
BIT
5:4
1:0
BIT
13
12
CSn_OFF_RA
MP [1:0]
CSn_ON_RAM
P [1:0]
CS1_EINT
CS2_EINT
“IM_” + name of respective
bit in R26
LABEL
LABEL
DEFAULT
00
00
Flag to indicate drain voltage can no
longer be regulated and output current
may be out of spec.
(Rising Edge triggered)
Note: This bit is cleared once read.
Flag to indicate drain voltage can no
longer be regulated and output current
may be out of spec.
(Rising Edge triggered)
Note: This bit is cleared once read.
Each bit in R34 enables or masks the
corresponding bit in R26. The default
value for these bits is 0 (unmasked).
Switch-off ramp duration
LED Mode
00 = instant (no
ramp)
01 = 0.25s
10 = 0.5s
11 = 1s
Switch-on ramp duration
Similar to CSn_OFF_RAMP
DESCRIPTION
DESCRIPTION
PD, June 2009, Rev 4.1
Flash Mode
00 = instant (no
ramp)
01 = 1.95ms
10 = 3.91ms
11 = 7.8ms
Production Data
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