MAX9853 Maxim Integrated Products, MAX9853 Datasheet - Page 46

• Manufacturer Part Number: MAX9853
• Description: (MAX9851 / MAX9853) Stereo Audio CODECs
• Manufacturer: Maxim Integrated Products

Stereo Audio CODECs with Microphone, DirectDrive
Headphones, Speaker Amplifiers, or Line Outputs
1 = Analog circuitry operating properly.
0 = Analog startup not complete or the MAX9851/
MAX9853 are in shutdown.
AOK reports that the analog section of the MAX9851/
MAX9853 is properly operating. When power is applied
to MAX9851/MAX9853, the AOK bit is set to 0. The
MAX9851/MAX9853 must be taken out of shutdown and
the charge pump must be operating for this bit to be set
1 = Detection of clipping triggers a hardware interrupt
and sets CLD (register 0x00, B7).
0 = Clipping not reported.
1 = Completion of a slewed volume change triggers a
hardware interrupt and sets SLD (register 0x00, B6).
0 = Completion of slewing not reported.
1 = An unlock condition in the internal PLLs trigger a
hardware interrupt and sets ULK (register 0x00, B5).
0 = Unlock conditions not reported.
Table 10. Status Register 1
Table 11. Interrupt Enables
46
REG
0x02
REG
0x01
______________________________________________________________________________________
Digital PLL Unlock Interrupt Enable (IULK)
ICLD
B7
AOK
Slew Detect Interrupt Enable (ISLD)
B7
Clip Detect Interrupt Enable (ICLD)
Analog Section OK (AOK)
ISLD
B6
B6
1
IULK
B5
B5
B4
0
B4
to 1. The digital signal processing sections of the
MAX9851/MAX9853 do not operate unless this bit is 1.
HSDET reports the load impedance of the four headset
test pins, EXTMICBIASL, EXTMICBIASR, HPL, and
HPR, for use in determining the connected headset
configuration. See Table 3 in the Headset Detect sec-
tion for decoding the value of these bits.
1 = All changes in headset configuration trigger a hard-
ware interrupt and set HSD (register 0x00, B1).
0 = Only jack insertions and removals are reported.
If IHSD = 0 any removal or insertion of a jack (detected
by monitoring EXTMICBIASL) will still trigger an interrupt
on the IRQ line, but other HSDET bit changes will not.
1 = Current overload at the Class D speaker amplifier
triggers a hardware interrupt and sets FAULT (register
0x00, B0).
0 = Current overload not reported.
1 = Inputs on FAULTIN trigger a hardware interrupt and
set FAULT (register 0x00, B0).
0 = Fault inputs not reported.
MAX9853: External Fault Interrupt Enable (IFAULT)
MAX9851: Speaker Fault Interrupt Enable (IFAULT)
B3
0
B3
Interrupt Enable Register (0x02)
HSDET
Headset Detect Interrupt Enable (IHSD)
Headset Jack Mode Indicator (HSDET)
B2
0
B2
IHSD
B1
B1
IFAULT
B0
B0