LM49352RLX/NOPB National Semiconductor, LM49352RLX/NOPB Datasheet - Page 37

• Manufacturer Part Number: LM49352RLX/NOPB
• Description: IC AMP AUDIO MONO D1.4W 36USMD
• Manufacturer: National Semiconductor
• Series: Boomer®, PowerWise®r
• Type: Class Dr

Specifications of LM49352RLX/NOPB

• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.4W x 1 @ 8 Ohm; 65mW x 2 @ 32 Ohm
• Features: Depop, Differential Inputs, I²C, I²S, Microphone, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Other names: LM49352RLX

15.0 PMC Clocks Register
This register is used to control the LM49352's Basic Power Management Clock:
16.0 PMC Clock Divide Register
This register is used to control the LM49352's Power Management Circuit Clock Divider:
Bits
Bits
1:0
7:0
PMC_CLK_SEL
PMC_CLK_DIV
Field
Field
This selects the source of the PMC input clock.
This programs the half cycle divider that precedes the PMC. The PMC should run from a
300kHz clock. The default of this divider is 0x50h (divide by 40.5) to get a
clock from a 12MHz or 12.288MHz MCLK.
Program this divider with the required division, multiplied by 2, and subtract 1.
TABLE 4. PMC_SETUP (0x01h)
TABLE 5. PMC_SETUP (0x02h)
PMC_CLK_SEL
PMC_CLK_DIV
00000000
00000001
00000010
00000011
00000100
00000101
11111101
11111110
11111111
00
01
10
11
—
37
Description
Description
MCLK (Default divide is 40.5)
Internal 300kHz Oscillator
PMC Input Clock Source
DAC SOURCE CLOCK
ADC SOURCE CLOCK
Divide by
127.5
126
128
1.5
2.5
—
1
1
2
3
≈
300kHz PMC
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