Datasheet

Maxim Integrated │ 153
MAX98090 Ultra-Low Power Stereo Audio Codec
www.maximintegrated.com
Table 77. Jack Detect Configuration Register
Table 78. Jack Status Register
ADDRESS: 0x3D
DESCRIPTION
BIT NAME TYPE POR
7 JDETEN R/W 0
Jack Detect Enable
0: Jack detect circuitry disabled
1: Jack detect circuitry enabled
6 JDWK R/W 0
JACKSNS Pullup Conguration
0: 2.4kΩ resistor to SPKLVDD (allows microphone detection)
1: 5µA to SPKLVDD (minimizes supply current)
Valid when MICBIAS = 0 or SHDN = 0.
5 — — — —
4 — — — —
3 — — — —
2 — — — —
1
JDEB[1:0] R/W
0
Jack Detect Debounce
Congures the jack detect debounce time:
00: 25ms 10: 100ms
01: 50ms 11: 200ms
0 0
ADDRESS: 0x02
DESCRIPTION
BIT NAME TYPE POR
7 — — — —
6 — — — —
5 — — — —
4 — — — —
3 — — — —
2 LSNS R 0
Microphone Load Sense (Valid Only if JDETEN = 1)
0: V
JACKSNS
≤ 0.95V x V
SUPPLY
1: V
JACKSNS
> 0.95V x V
SUPPLY
V
SUPPLY
is determined by the state of MBEN and SHDN so that:
MBEN = 0 or SHDN = 0: V
SUPPLY
= V
SPKLVDD
(internal pullup)
MBEN = 1 and SHDN = 1: V
SUPPLY
= V
MICBIAS
(external pullup)
1 JKSNS R 0
Jack Connection Sense (Valid Only if JDETEN = 1)
0: V
JACKSNS
< 0.1V x V
SUPPLY
1: V
JACKSNS
≥ 0.1V x V
SUPPLY
V
SUPPLY
is determined by the state of MBEN and SHDN so that:
MBEN = 0 or SHDN = 0: V
SUPPLY
= V
SPKLVDD
(internal pullup)
MBEN = 1 and SHDN = 1: V
SUPPLY
= V
MICBIAS
(external pullup)
0 — — — —