PCM3793A
PCM3794A
www.ti.com
SLAS529A–JANUARY 2007–REVISED FEBRUARY 2007
Register 125
B15
0
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
RES0
Register 125
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
RSV
PTM1
PTM0
RES4
RES3
RES2
RES1
IDX[6:0]: 111 1101b (7Dh): Register 125
PTM[1:0]: Power-Up/Down Time Control
Default value: 00
Table 14. Power Up/Down Time Control
VCOM CAPACITOR
[µF]
POWER-UP TIME
POWER-DOWN
TIME [ms]
RES[4:0]
PTM[1:0]
[ms]
NOTE
1 1110
1 1100
1 1000
1 0000
1 1110
1 1100
1 1000
1 0000
1 1110
1 1100
1 1000
1 0000
1 1110
1 1100
1 1000
1 0000
00
450
900
–
750
1500
–
11
10
4.7
2.2
1
Do not set.
Do not set.
–
–
01
250
450
900
–
400
750
1500
–
00
Default
11
Do not set.
10
100
250
450
900
–
300
400
750
1500
–
01
00
11
Do not set.
10
01
00
100
250
450
300
400
750
RES[4:0]: Resistor Value Control
Default value: 1 1100
These bits are used to optimize audible pop noise and ramp-up time for the headphone output when powering
the device on/off.
Table 15. Resistor Value Control
RES [4:0]
1 0000
1 1000
1 1100
1 1110
Others
VCOM RESISTOR VALUE
60 kΩ
24 kΩ
12 kΩ
6 kΩ
Reserved
60
Submit Documentation Feedback
BB [ BURR-BROWN CORPORATION ]
