MCIMX233CJM4B Datasheet, PDF (1234/1612 Pages) Freescale Semiconductor, Inc – i.MX23 Applications Processor Reference Manual

AUDIOOUT/DAC
Table 29-21. HW_AUDIOOUT_ANACTRL Bit Field Descriptions
BITS
LABEL
31:29 RSRVD8
28 SHORT_CM_STS
27:25 RSRVD7
24 SHORT_LR_STS
23:22 RSRVD6
21:20 SHORTMODE_CM
19 RSRVD5
18:17 SHORTMODE_LR
16:15 RSRVD4
14:12 SHORT_LVLADJL
11 RSRVD3
10:8 SHORT_LVLADJR
7:6 RSRVD2
5
HP_HOLD_GND
4
HP_CLASSAB
3:0 RSRVD1
RW RESET
RO 0x00
RW 0x0
RO 0x0
RW 0x0
RO 0x0
RW 0x0
RO 0x00
RW 0x0
RO 0x0
RW 0x0
RO 0x0
RW 0x0
RO 0x0
RW 0x0
RW 0x0
RO 0x0
DEFINITION
Reserved. Always write zeroes to this bit field. It is
reset by a power-on reset only.
Status of common mode amplifier short detection:
0=No short. To clear this interrupt and then rearm it: (1)
Set HW_AUDIOOUT_ANACTRL_SHORTMODE_CM
to 00. (2) Clear this bit. (3) Set
HW_AUDIOOUT_ANACTRL_SHORTMODE_CM to
01. There are two sets of edge-triggered latches in this
path. All three steps must be executed to rearm the
short detect.
Reserved. Always write zeroes to this bit field.
Status of headphone amplifier short detection: 0=No
short. To clear this interrupt and then rearm it: (1) Set
HW_AUDIOOUT_ANACTRL_SHORTMODE_LR to
00. (2) Clear this bit. (3) Set
HW_AUDIOOUT_ANACTRL_SHORTMODE_LR to
01. There are two sets of edge-triggered latches in this
path. All three steps must be executed to rearm the
short detect.
Reserved. Always write zeroes to this bit field.
Headphone Common Mode Amplifier Short Control
Mode. 00=Reset analog latch, HW power down on
unlatched short signal. 01=Latch short signal. HW
power down on latched signal. 10=Do not use. 11=Do
not use.
Reserved. Always write zeroes to this bit field.
Headphone Left and Right Channel Short Control
mode. 00=Reset analog latch, HW power-down
disabled. 01=Latch short signal, HW power-down
enabled. 10=Do not use. 11=Do not use.
Reserved. Always write zeroes to this bit field.
Adjust the left headphone current short detect trip
point: 000=Nominal. 001=-25%. 010=-50%. 011=-75%.
100=+25%. 101=+50%. 110=+75%. 111=+100%. It is
reset by a power-on reset only.
Reserved. Always write zeroes to this bit field.
Adjust the right headphone current short detect trip
point: 000=Nominal. 001=-25%. 010=-50%. 011=-75%.
100=+25%. 101=+50%. 110=+75%. 111=+100%. It is
reset by a power-on reset only.
Reserved. Always write zeroes to this bit field.
Hold Headphone Output to Ground (used for
power-up/power-down procedures). It is reset by a
power-on reset only.
Default is 0 (ClassA mode). ClassA mode can be
useful for power-up/power-down and short handling.
This bit should be set (ClassAB mode) before starting
audio signal. It is reset by a power-on reset only.
Reserved. Always write zeroes to this bit field.
DESCRIPTION:
This register provides miscellaneous audio control bits.
29-30
i.MX23 Applications Processor Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor