TSC2101_08 Datasheet, PDF (64/95 Pages) Texas Instruments – AUDIO CODEC WITH INTEGRATED HEADPHONE, SPEAKER AMPLIFIER AND TOUCH SCREEN CONTROLLER

TSC2101
SLAS392D− JUNE 2003 − REVISED MAY 2005
D7−D2 J_VAL
000001
D1−D0
00
R/W
J value: Valid when PLL is enabled
000000 => Not valid,
000001 => 1,
000010 => 2,
000011 => 3,
……..
111100 => 60,
111101 => 61,
111110 => 62,
111111 => 63
R
Reserved (Write only 00)
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REGISTER ICH: PLL Programmability
BIT
D15−D2
NAME
D_VAL
RESET VALUE
0
(decimal)
READ/WRITE
R/W
D1−D0 Reserved
0
R
FUNCTION
D value: Valid when PLL is enabled
D value is valid from 0000 to 9999 in decimal.
Greater than 9999 is treated as 9999.
Reserved (Write only 00)
REGISTER IDH: Audio Control 4
BIT
NAME RESET VALUE
D15
ADSTPD
0
D14
DASTPD
0
D13
ASSTPD
0
D12
CISTPD
0
D11
BISTPD
0
D10−D9 AGCHYS
00
D8−D7 MB_HED
00
D6
MB_HND
0
D5−D2
0’s
D1
SCPFL
0
D0
X
64
READ/WRITE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
FUNCTION
Headset/Aux or Handset PGA Soft−stepping Control
0 => Enable soft−stepping
1 => Disable soft−stepping
DAC PGA Soft−stepping Control
0 => Enable soft−stepping
1 => Disable soft−stepping
Analog Sidetone PGA Soft−stepping Control
0 => Enable soft−stepping
1 => Disable soft−stepping
Note: When soft−stepping is enabled gain is changed 0.5 dB per Fsref.
Cell−phone PGA Soft−stepping Control
0 => Enable soft−stepping
1 => Disable soft−stepping
Note: When soft−stepping is enabled gain is changed 0.5 dB per Fsref.
Buzzer PGA Soft−stepping Control
0 => Enable soft−stepping
1 => Disable soft−stepping
Note: When soft−stepping is enabled gain is changed 3 dB per Fsref.
MIC AGC Hysteresis selection
00 => 1 dB
01 => 2 dB
10 => 4 dB
11 => No Hysteresis
Note: Valid only when AGC is selected for Headset/Aux or Handset input
Micbias for Headset
00 => MICBIAS_HED = 3.3 V
01 => MICBIAS_HED = 2.5 V
10 => MICBIAS_HED = 2.0 V
11 => MICBIAS_HED = 2.0 V
Micbias for Handset
0 => MICBIAS_HND = 2.5 V
1 => MICBIAS_HND = 2.0 V
Reserved (Write only 0000)
Driver Short Circuit Protection Flag.
0 => No short circuit happened.
1 => Short circuit detected on headphone outputs.
Reserved (Write only 0)