lm49350rl National Semiconductor Corporation, lm49350rl Datasheet - Page 95

• Manufacturer Part Number: lm49350rl
• Description: High Performance Audio Codec Sub-system With A Ground-referenced Stereo Headphone Amplifier & An Ultra Low Emi Class D Loudspeaker Amplifier With Dual I2s/pcm Digital Audio Interfaces
• Manufacturer: National Semiconductor Corporation

27.0 GPIO Registers
Bits
Bits
Bits
Bits
3:0
1:0
7:0
7:0
4
5
6
7
2
TABLE 87. ADC Compensation Filter C0 MSBs (0xF9h)
TABLE 86. ADC Compensation Filter C0 LSBs (0xF8h)
THERMAL_EVENT If set records that a temperature event has
ADC_CO_MSB
ADC_CO_LSB
GPIO_MODE
SHORT_CCT
SS_DISABLE
TABLE 85. Spread Spectrum (0xF1h)
GPIO_RX
GPIO_TX
RSVD
Field
Field
Field
Field
TABLE 84. GPIO (0xE0h)
This sets the mode of the GPIO Pin.
If set, the GPIO pin will transmit a logic
high whenever GPIO_MODE is set to
'0010'.
This bit reports what logic level is present
on the GPIO pin.
If set, the GPIO records that a short circuit
event has occurred on the class D
outputs.
occurred on the die. Clear on Write (1).
Reserved
If this bit is set, Spread Spectrum mode
will be disabled from the Class D amplifier.
Bits 7:0 of C0[15:0]
Bits 15:0 of C0[15:0]
95
GPIO_MODE
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Description
Description
Description
Description
OFF (input disabled)
THERMAL or CLIP
ADC_NG_ACTIVE
ADC_NG_ACTIVE
SHORT_CCT or
SHORT_CCT or
THERMAL (out)
MIC_MUTE (in)
MIC_MUTE (in)
GPIO Function
CHIP_ENB (in)
CHIP_ENB (in)
HP_ENB (out)
HP_ENB (out)
LS_ENB (out)
LS_ENB (out)
CLIP (out)
GPIO_RX
GPIO_TX
(out)
(out)
(out)
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