TWR-AUDIO-SGTL Freescale Semiconductor, TWR-AUDIO-SGTL Datasheet - Page 41

• 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

Table 28. CHIP_LINE_OUT_CTRL 0x002C
Table 29. CHIP_LINE_OUT_VOL 0x002E
Table 30. Line Out Output Level Values
Analog Integrated Circuit Device Data
Freescale Semiconductor
15:12
15:13
BITS
BITS
11:8
12:8
15
15
7:6
5:0
7:5
4:0
RSVD
VDDA
1.8 V
1.8 V
3.3 V
3.3 V
14
14
OUT_CURRENT
LO_VOL_RIGHT
LO_VAGCNTRL
RSVD
LO_VOL_LEFT
FIELD
FIELD
RSVD
RSVD
RSVD
RSVD
13
13
12
12
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
VAG_VAL
11
11
LO_VOL_RIGHT
1.55
1.55
0.9
0.9
OUT_CURRENT
RESET
RESET
0x0
0x0
0x0
0x0
0x0
0x4
0x0
0x4
10
10
Reserved
Controls the output bias current for the lineout amplifiers. The nominal recommended
setting for a 10 kohm load with 1.0 nF load cap is 0x3. There are only 5 valid settings.
0x0=0.18 mA, 0x1=0.27 mA, 0x3=0.36 mA, 0x7=0.45 mA, 0xF=0.54 mA
Reserved
Lineout Amplifier Analog Ground Voltage
Controls the analog ground voltage for the lineout amplifiers in 25 mV steps. This
should usually be set to VDDIO/2.
0x00 = 0.800 V
...
0x1F = 1.575 V
...
0x23 = 1.675 V
0x24-0x3F are invalid
Reserved
Lineout Right Channel Volume
Controls the right channel lineout volume in 0.5 dB steps. Higher codes have more
attenuation. See programming information for Left channel.
Reserved
Lineout Left Channel Output Level
The LO_VOL_LEFT is used to normalize the output level of the left line output to full
scale based on the values used to set LINE_OUT_CTRL -> LO_VAGCNTRL and
CHIP_REF_CTRL -> VAG_VAL. In general this field should be set to:
40*log((VAG_VAL)/(LO_VAGCNTRL)) + 15
Table 30
After setting to the nominal voltage, this field can be used to adjust the output level in
+/-0.5 dB increments by using values higher or lower than the nominal setting.
9
9
shows suggested values based on typical VDDIO and VDDA voltages.
8
8
VDDIO
3.3 V
1.8 V
1.8 V
3.3 V
7
7
RSVD
RSVD
6
6
LO_VAGCNTRL
DEFINITION
DEFINITION
5
5
1.55
1.55
0.9
0.9
4
4
FUNCTIONAL DEVICE OPERATION
LO_VAGCNTRL
3
3
PROGRAMMING EXAMPLES
LO_VOL_LEFT
2
2
LO_VOL_*
0x06
0x0F
0x19
0x0F
1
1
SGTL5000
0
0
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