SGTL5000XNLA3R2 Freescale Semiconductor, SGTL5000XNLA3R2 Datasheet - Page 30

• Manufacturer Part Number: SGTL5000XNLA3R2
• Description: IC AUDIO CODEC STEREO 20-QFN
• Manufacturer: Freescale Semiconductor
• Type: Stereo Audior

Specifications of SGTL5000XNLA3R2

• Data Interface: I²C, Serial, SPI™
• Number Of Adcs / Dacs: 1 / 1
• Sigma Delta: No
• S/n Ratio, Adcs / Dacs (db) Typ: 90 / 100
• Voltage - Supply, Analog: 1.62 V ~ 3.6 V
• Voltage - Supply, Digital: 1.1 V ~ 2 V, 1.62 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-UFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SGTL5000
30
CHIP_CLK_TOP _CTRL->INPUT_FREQ_DIV2 = 1
PLL_INPUT_FREQ = SYS_MCLK/2
5.5.
CHIP_PLL_CTRL->INT_DIVISOR = FLOOR (PLL_OUTPUT_FREQ/INPUT_FREQ
CHIP_PLL_CTRL->FRAC_DIVISOR = ((PLL_OUTPUT_FREQ/INPUT_FREQ) - INT_DIVISOR) * 2048
Audio Switch (Source Select Switch)
PLL_OUTPUT_FREQ=180 .6336 MHz
For example, when a 12MHz digital signal is placed on MCLK, for a 48kHz frame
clock
CHIP_CLK_TOP_CTRL->INPUT_FREQ_DIV2 = 0 // SYS_MCLK<17MHz
CHIP_PLL_CTRL->INT_DIVISOR = FLOOR(196.608MHz/12MHz) = 16 (decimal)
CHIP_PLL_CTRL->FRAC_DIVISOR = ((196.608MHz/12MHz) - 16) * 2048 = 786
(decimal)
Refer to PLL programming note 6.2.2.
The audio switch is the central routing block that controls the signal flow from input
to output. Any single input can be routed to any single or multiple outputs.
Any signal can be routed to the Digital Audio Processor (DAP). The output of the
DAP (an input to the audio switch) can in turn be routed to any physical output. The
output of the DAP can not be routed into itself. Refer to section 5.9, Digital Audio
Processing, for DAP information and configuration.
It should be noted that the analog bypass from Line input to headphone output does
not go through the audio switch.
Yes
Figure 11. PLL Programming Flowchart
Yes
SYS_MCLK>17MHz?
Frequency =
44.1kHz?
Sampling
PLL_OUTPUT_FREQ=196 .608 MHz
CHIP_CLK_TOP_CTRL->INPUT_FREQ_DIV2 = 0
PLL_INPUT_FREQ = SYS_MCLK
No
No
SGTL5000 EA2 DS-0-3