WM8351CGEB/RV WOLFSON [Wolfson Microelectronics plc], WM8351CGEB/RV Datasheet - Page 149
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WM8351CGEB/RV
Manufacturer Part Number
WM8351CGEB/RV
Description
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM8351CGEBRV.pdf
(330 pages)
- Current page: 149 of 330
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Production Data
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The sink current for ISINKA can be programmed to switch on and off gradually in LED and in Flash
modes. The current ramp duration is as described in Table 99.
R173 (ADh)
CSA Flash
Contro
Table 99 Configuring On/Off Ramp Timing for ISINKA
16.2.5
The Current Sink has its own first-level interrupt, CS_INT (see Section 24). This contains a single
second-level interrupt, CS1_EINT, indicating that the Current Sink is unable to sink the amount of
current that has been programmed and may be out of spec. CS1_EINT can be masked by setting the
IM_CS1_EINT bit.
R26 (1Ah)
Interrupt Status
2
R34 (22h)
Interrupt Status
2 Mask
Table 100 Current Sink Interrupts
16.2.4
ADDRESS
ADDRESS
ON/OFF RAMP TIMING
INTERRUPTS AND FAULT PROTECTION
BIT
5:4
1:0
BIT
13
13
CS1_OFF_RA
MP [1:0]
CS1_ON_RAM
P [1:0]
CS1_EINT
IM_CS1_EINT
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.
Mask bit for Current Sink over-current
interrupt
When set to 1, IM_CS1_EINT masks
CS1_EINT in R26 and does not trigger a
CS_INT interrupt when CS1_EINT is set.
Switch-off ramp duration
LED Mode
00 = instant (no
ramp)
01 = 0.25s
10 = 0.5s
11 = 1s
Switch-on ramp duration
Similar to CS1_OFF_RAMP
DESCRIPTION
DESCRIPTION
PD, April 2012, Rev 4.5
Flash Mode
00 = instant (no
ramp)
01 = 1.95ms
10 = 3.91ms
11 = 7.8ms
WM8351
149
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