STA326 STMicroelectronics, STA326 Datasheet - Page 38

• Manufacturer Part Number: STA326
• Description: DIG AUDIO SYSTEM, 2-CH, 36POWERSSOP
• Manufacturer: STMicroelectronics

Specifications of STA326

• Svhc: No SVHC (15-Dec-2010)
• No. Of Pins: 36
• Operating Temperature Range: -20°C To +85°C
• Supply Voltage Max: 36V
• Supply Voltage Min: 10V
• Termination T: RoHS Compliant
• Package / Case: PowerSO
• Interface: I2C
• Interface Type: I2C
• Rohs Compliant: Yes

Register description
38/57
CxEQBP
Tone control (bass/treble) can be bypassed on a per channel basis. If tone control is
bypassed on a given channel the two filters that tone control utilizes are bypassed.
CxTCB
Each channel can be configured to output either the patented DDX
binary PWM encoded data. By setting the CxBO bit to 1, each channel can be individually
controlled to be in binary operation mode.
Also, there is the capability to map each channel independently onto any of the two limiters
available within the STA326 or even not map it to any limiter at all (default mode).
Table 57.
Each PWM output channel can receive data from any channel output of the volume block.
Which channel a particular PWM output receives is dependent upon that channel’s CxOM
register bits.
Table 58.
00
01
10
00
01
10
11
0: perform EQ on channel X - normal operation
1: bypass EQ on channel X
0: perform tone control on channel X - (default operation)
1: bypass tone control on channel X
CxLS[1,0]
CxOM[1:0]
Channel limiter mapping selection
Channel PWM output mapping
Channel has limiting disabled
Channel is mapped to limiter #1
Channel is mapped to limiter #2
Doc ID 11531 Rev 3
Channel 1
Channel 2
Channel 3
Not used
Channel limiter mapping
PWM output from
®
PWM data or standard
STA326