92hd91 Integrated Device Technology, 92hd91 Datasheet - Page 280

• Manufacturer Part Number: 92hd91
• Description: Single Chip Pc Audio System Codec+speaker Amplifier+capless Hp+ldo
• Manufacturer: Integrated Device Technology

92HD91
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
IDT CONFIDENTIAL
©2009 INTEGRATED DEVICE TECHNOLOGY, INC.
These 8-bit registers set the timer values between incrementing/decrementing the Compressor attenuation values. There is
one register each for Attack, Hold, and Release times, the configuration parameters are the same for all three and are
shown in the table below.
These 16-bit registers set the threshold values. When in attack phase and the Attack Threshold is exceeded the
Compressor attenuation is incremented by stepsize (see LMTCTRL). When in release phase and the Release Threshold is
not exceeded the Compressor attenuation is incremented by stepsize (but not above 0).
verb F89/789
verb F8A/78A
verb F8B/78B
verb F8C/78C
verb F8D/78D
verb F8E/78E
verb F8F/78F
Register Address
Register Address
Register Address
Register Address
Register Address
Register Address
Register Address
7.29.1.14. LMTATKTIME (0x19), LMTHOLDTIME (0x1A), LMTRELTIME (0x1B) Registers
7.29.1.15. LMTATKTH (0x1D–LO, 0x1C–HI), LMTRELTH (0x1F–LO, 0x1E–HI) Registers
7
6:0
7
6:0
7
6:0
7:0
7:0
7:0
7:0
Bit
Bit
Bit
Bit
Bit
Bit
Bit
LMTRT[6:0]
LATKTH[15:8]
ATK10ms
LMTAT[6:0]
HOLD10ms
LMTHT[6:0]
REL10ms
LATKTH[7:0]
LRELTH[15:8]
LRELTH[7:0]
Label
Label
Label
Label
Label
Label
Label
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Type Default
Type
Type
Type Default
Type Default
Type
Type Default
0
0
0
0
0
0
7F
FF
0
0
Default
Default
Default
280
1 = value in bits 6:0 is in 10ms units, otherwise 1ms units.
Timer value in units of 1 or 10ms.
8’hFF would equal threshold level of +2.0dB. Each step below
this 8-bit full scale value reduces threshold level by 0.0078 dB.
Always 0. It isn’t necessary to provide threshold resolution to
the point where these lower 8 bits would be used.
Always 0. It isn’t necessary to provide threshold resolution to
the point where these lower 8 bits would be used.
1 = value in bits 6:0 is in 10ms units, otherwise 1ms units.
Timer value in units of 1 or 10ms.
1 = value in bits 6:0 is in 10ms units, otherwise 1ms units.
Timer value in units of 1 or 10ms.
8’hFF would equal threshold level of +2.0dB. Each step below
this 8-bit full scale value reduces threshold level by 0.0078 dB.
Description
Description
Description
Description
Description
Description
Description
V 0.91 10/10
92HD91