WM9714L_06 Datasheet, PDF (83/94 Pages) Wolfson Microelectronics plc – AC 97 Audio CODEC

Pre-Production
WM9714L
REGISTER
ADDRESS
60h
62h
BIT
15:12
11:8
7:4
3:0
15:14
LABEL
ALCL
HLD
DCY
ATK
ALCSEL
13:11
10:9
7
5
4:0
MAXGAIN
ZC
TIMEOUT
NGAT
NGG
NGTH
DEFAULT
DESCRIPTION
1011 (-12dB)
0000 (0 ms)
0011 (192 ms)
0010 (24 ms)
00 (OFF)
111 (+30dB)
11 (slowest)
Controls ALC threshold
Controls ALC hold time
Controls ALC decay time
Controls ALC attack time
Controls which channel ALC operates on. 00=none,
01=right only, 10=left only, 11=both
Controls upper gain limit for ALC
Controls time-out for zero-cross detection
0 (OFF)
0 (hold gain)
00000 (-76.5dB)
Enables noise gate function
Selects noise gate type. 0=hold gain, 1=mute
Controls noise gate threshold
Registers 60h and 62h control the ALC and Noise Gate functions.
REFER TO
Audio ADC,
Automatic
Level Control
REGISTER
ADDRESS
64h
BIT
15
LABEL
XSLE
DEFAULT
0
14:12
11:0
AUXDACSLT
AUXDACVAL
000 (Slot 5)
000000000
DESCRIPTION
Selects input for AUXDAC. 0=from AUXDACVAL
(for DC signals), 1=from AC-Link slot (for AC
signals)
Selects input slot for AUXDAC (with XSLE=1)
AUXDAC Digital Input for AUXDAC (with XSLE=0).
000h= minimum, FFFh=full-scale
Register 64h controls the input signal of the auxiliary DAC.
REFER TO
Auxiliary DAC
REGISTER
ADDRESS
74h
BIT
9
LABEL
POLL
DEFAULT
0
8
CTC
0
7
ADCSEL_AUX4 0
6
ADCSEL_AUX3 0
5
ADCSEL_AUX2 0
4
ADCSEL_AUX1 0
76h
9:8
CR
00 (93.75Hz)
7:4
DEL
0000 (20.8µs)
3
SLEN
1
2:0
SLT
110 (slot 11)
78h
15:14 PRP
00
9
WAIT
0
7:6
14:12
11:0
MSK
ADCSRC
ADCD
00 (OFF)
000 (none)
000h
Registers 76h, 78h and 7Ah control the AUXADC.
DESCRIPTION
Writing “1” initiates a measurement (when CTC is
not set)
0=Polling mode; 1=Continuous mode (for DMA)
Enable COMP1/AUX4 measurement (pin32)
Enable COMP1/AUX3 measurement (pin31)
Enable COMP1/AUX2 measurement (pin30)
Enable COMP1/AUX1 measurement (pin29)
Controls conversion rate in continuous mode
Controls AUXADC settling time
Enables slot readback of AUXADC data
Selects time slot for readback of AUXADC data
Selects mode of operation. 00=OFF,
01/10=Reserved, 11=ON
Controls data readback from register 7Ah.
0=overwrite old data with new, 1=wait until old data
has been read
Controls MASK feature
Indicates measurement type
Returns data from AUXADC
REFER TO
AUXADC
w
PP Rev 3.0 June 2006
83