92hd81 Integrated Device Technology, 92hd81 Datasheet - Page 77

• Manufacturer Part Number: 92hd81
• Description: Single Chip Pc Audio System
• Manufacturer: Integrated Device Technology

SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
92HD81
SINGLE CHIP PC AUDIO SYSTEM, CODEC+SPEAKER AMPLIFIER+CAPLESS HP+LDO
Field Name
BTLSDInv
BTLSDMode
BTLSD
Rsvd1
PinMode
Field Name
Rsvd
Reg
Get
Set
7.4.24. AFG (NID = 01h): PortUse
Byte 4 (Bits 31:24)
Bits
6
BTL Amp Shutdown Invert:
1 = Amp will power down (or mute) when EAPD pin is high
5
BTL Amp Shutdown Mode:
1 = Amp will enter a low power state when disabled
4
BTL Amp Shutdown Control Select:
0 = Amp controlled by EAPD pin only
1 = Amp controlled by power state only
3:2
Reserved.
1:0
EAPD Pin Mode:
nal)
01b = CMOS Output (Value of EAPD bit is forced at pin)
1xb = CMOS Input (External signal controls internal amps, EAPD bit ignored)
Bits
31:7
Reserved.
0 = Amp will power down (or mute) when EAPD pin is low
0 = Amp will mute when disabled
00b = Open Drain I/O (Value at pin is wired-AND of EAPD bit and external sig-
Byte 3 (Bits 23:16)
R/W
RW
RW
RW
R
RW
R/W
R
FC000h
Default
0h
0h
0h
0h
0h
Default
0000000h
77
Byte 2 (Bits 15:8)
Reset
POR
POR
POR
N/A (Hard-coded)
POR
Reset
N/A (Hard-coded)
92HD81
Byte 1 (Bits 7:0)
7C0h
PC AUDIO
V 0.97 01/09