TWR-AUDIO-SGTL Freescale Semiconductor, TWR-AUDIO-SGTL Datasheet - Page 49

• Manufacturer Part Number: TWR-AUDIO-SGTL
• Description: TWR SYS Audio Board
• Manufacturer: Freescale Semiconductor
• Series: Kinetisr

Specifications of TWR-AUDIO-SGTL

• Kit Contents: TWR-AUDIO-SGTL Featuring SGTL5000 Low Power Stereo Codec, Printed Quick Start Guide
• Mcu Supported Families: K20, K50, MCF51Jx
• Kit Features: SGTL5000 Low Power Stereo Codec With Headphone
• Rohs Compliant: Yes
• Design Resources: TWR-AUDIO-SGTL Schematics
• Accessory Type: Module, Audio with CODEC
• Description/function: Audio CODECs
• Mounting Style: Press Fit
• Product: Audio Modules
• Features: SGTL5000 Low Power Stereo Codec With Headphone Amplifier, Stereo Line-in / Line-out On 3.5mm Jack
• Lead Free Status / Rohs Status: Details
• For Use With/related Products: Freescale Tower System

contains controls for the headphone short detectors.
Table 37. CHIP_SHORT_CTRL 0x003C
Analog Integrated Circuit Device Data
Freescale Semiconductor
RSVD
14:12
BITS
10:8
The
15
6:4
15
11
7
Table 37, CHIP_SHORT_CTRL 0x003C
14
LVLADJR
LVLADJR
LVLADJC
LVLADJL
FIELD
RSVD
RSVD
RSVD
13
12
RW
RW
RW
RW
RSVD
RO
RO
RO
11
RESET
0x0
0x0
0x0
0x0
0x0
0x0
10
LVLADJL
register
Reserved
These bits adjust the sensitivity of the right channel headphone short detector in 25 mA
steps.This trip point can vary by ~30% over process so leave plenty of guard band to
avoid false trips. This short detect trip point is also effected by the bias current
adjustments made by CHIP_REF_CTRL -> BIAS_CTRL and by CHIP_ANA_TEST1 -
> HP_IALL_ADJ.
0x3=25 mA
0x2=50 mA
0x1=75 mA
0x0=100 mA
0x4=125 mA
0x5=150 mA
0x6=175 mA
0x7=200 mA
Reserved
These bits adjust the sensitivity of the left channel headphone short detector in 25 mA
steps.This trip point can vary by ~30% over process so leave plenty of guard band to
avoid false trips. This short detect trip point is also effected by the bias current
adjustments made by CHIP_REF_CTRL -> BIAS_CTRL and by CHIP_ANA_TEST1 -
> HP_IALL_ADJ.
0x3=25 mA
0x2=50 mA
0x1=75 mA
0x0=100 mA
0x4=125 mA
0x5=150 mA
0x6=175 mA
0x7=200 mA
Reserved
These bits adjust the sensitivity of the capless headphone center channel short
detector in 50 mA steps. This trip point can vary by ~30% over process so leave plenty
of guard band to avoid false trips. This short detect trip point is also effected by the bias
current adjustments CHIP_REF_CTRL -> BIAS_CTRL and by CHIP_ANA_TEST1 ->
HP_IALL_ADJ.
0x3=50 mA
0x2=100 mA
0x1=150 mA
0x0=200 mA
0x4=250 mA
0x5=300 mA
0x6=350 mA
0x7=400 mA
9
8
RSVD
7
6
LVLADJC
DEFINITION
5
4
FUNCTIONAL DEVICE OPERATION
MODE_LR
3
PROGRAMMING EXAMPLES
2
MODE_CM
1
SGTL5000
0
49