sta339bw STMicroelectronics, sta339bw Datasheet - Page 40

• Manufacturer Part Number: sta339bw
• Description: 2.1-channel High-efficiency Digital Audio System
• Manufacturer: STMicroelectronics

Register description
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Figure 14. OCFG = 11
The STA339BW can be configured to support different output configurations. For each PWM
output channel a PWM slot is defined. A PWM slot is always 1 / (8 * fs) seconds length. The
PWM slot define the maximum extension for PWM rise and fall edge, that is, rising edge as
far as the falling edge cannot range outside PWM slot boundaries.
Figure 15. Output mapping scheme
For each configuration the PWM signals from the digital driver are mapped in different ways
to the power stage:
modulator
modulator
FFX ™
FFX ™
FFX3 A
FFX3 A
FFX3B
FFX3B
FFX4 A
FFX4 A
FFX 4B
FFX 4B
FFX1A
FFX1A
FFX1 B
FFX1 B
FFX2 A
FFX2 A
FFX 2B
FFX 2B
Doc ID 15251 Rev 4
REMAP
REMAP
Bridge
Bridge
Bridge
Bridge
Half
Half
Half
Half
OUT4B
OUT3A
OUT3B
OUT4A
OUT1A
OUT2B
OUT1B
OUT2A
OUT1A
OUT1A
OUT1B
OUT1B
OUT2A
OUT2A
OUT2B
OUT2B
OUT3A
OUT3A
OUT3B
OUT3B
OUT4A
OUT4A
OUT4B
OUT4B
Channel 1
Channel 2
Channel 3
Bridge
Bridge
Power
Power
OUT1A
OUT1A
OUT2A
OUT2A
OUT1B
OUT1B
OUT2B
OUT2B
STA339BW