SC900841JVKR2 Freescale Semiconductor, SC900841JVKR2 Datasheet - Page 148

• Manufacturer Part Number: SC900841JVKR2
• Description: IC POWER MGT 338-MAPBGA
• Manufacturer: Freescale Semiconductor

Specifications of SC900841JVKR2

• Applications: PC's, PDA's
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 338-TBGA
• Input Voltage: 2.8 V to 4.4 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Voltage - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

• The insertion of an accessory in the headphone or headset
• The software must clear the first HPDET interrupt,
AUDIO REGISTERS AND BIT DESCRIPTIONS
148
900841
Table 95. Audio Registers
FUNCTIONAL DEVICE OPERATION
AUDIO
jack when MIC2BIAS=0 will initially generate an HPDET
interrupt independently if there is a headset or a
headphone in the jack. The first HPDET interrupt means
that an accessory was attached to the jack.
and setup MIC2BIAS = 1 and AUDIOFF=0,
according to the flowchart to be able to detect
No
MSWMP INT = 1
AUDI OOFF = 1
MSWLPINT = 1
HS DET EN = 1
MIC2BIAS = 0
MHSDET = 1
MHPDET = 0
VCEWORDLEN
P MICINT = 1
VCELONGFS
Name
A ll ext ernal jac k inputs are
debounc ed by 30 ms
Yes
Access ory at tached
S et AUDIOOF F = 0
and MIC2B IAS = 1
HPDET = 1
HSDETE N = 0
HSDETEN = 1
Hardware
I nt errupt
A UX = 1
Cal l IS R
wait
A ll int errupts = 0
No
Bits
2:0
Not an audio interrupt , go t o
ot her interrupt proces sing
3
Figure 74. Audio Interrupt Processing FLowchart
AUD1 (ADDR 0x180 - R/W - Default Value: 0x80)
Number of time slots per frame
x0 = 1 Time slot
x5 = 2 Time slots
x6 = 4 Time slots
x1-x4, x7 = Reserved
Length of frame sync
x0 = Bit long
x1 = Word long
• Once MIC2BIAS=1, the PMIC is able to detect all
between HSDET, HPDET, SWMPINT, and
SWLPINT
four accessory interrupts, depending on the load,
voltage, or button press time. After the MIC2BIAS is
enabled, a second occurrence of HPDET or HSDET
means that the accessory was removed. These two
interrupts are sensitive to both edges with a jack
insertion or jack removal.
No
HPDET = 1
HSDET = 1
No
A UX = 1,
A UX = 1,
All interrupts = 0
Def ault acc ess ory is a headphone
Y es
Y es
Description
headset w/ M IC.
S et MIC c ontrols
SWMP INT = 1
Ac cess ory is a
SWLPINT = 1
No
HS DET = 1
AUX = 1,
AUX = 1,
AUX = 1,
A cc es sory i s a
Headphone
A ll i nt errupts = 0
Yes
Yes
Yes
Analog Integrated Circuit Device Data
Al l interrupts = 0
Take ac tion (end call ,
call, sk ip MP 3 track ,
st op MP 3 playbac k ,
Headset det ached ,
Momentary button
Long button push .
push . Take act ion
(answer inc omi ng
c ont inue norm al
proc es si ng
et c .)
et c.)
HPDE T = 1
AUX = 1,
No
Freescale Semiconductor
A ll int errupts = 0
All interrupts = 0
All interrupt s = 0
Yes
continue normal
Headphone
proces sing
det ac hed,
All interrupt s = 0