FAB2200 Datasheet, PDF (25/33 Pages) Fairchild Semiconductor – Audio Subsystem with Stereo Class-G Headphone Amplifier and 1.2W Mono Class-D Speaker Amplifier

Register Descriptions
Address B7
B6
B5
B4
B3
B2
B1
B0
0x00
default
VERSION
010
HPNGTRIP SPNGTRIP OVRTEMP OVRCURSP
0
0
0
0
0
0
VERSION (Read only)
Indicates the silicon revision number.
HPNGTRIP (Read only)
1 = Headphone amplifiers are being muted by the noise gate.
0 = Normal operation.
SPNGTRIP (Read only)
1 = Speaker amplifier is being muted by the noise gate.
0 = Normal operation.
OVRTEMP (Read/Clear)
1 = The junction temperature of the device has exceeded the thermal shutdown threshold. (This bit remains set until it
is read.)
0 = Normal operation.
OVRCURSP (Read/Clear)
1 = The output current limit of the speaker amplifier has been exceeded. (This bit remains set until it is read.)
0 = Normal operation.
Address
B7
B6
B5
B4
B3
B2
B1
B0
0x01
HIZL
HIZR
0
BYPEN
0
0
0
SHDNB
default
0
0
0
0
0
0
0
0
HIZx
1 = HPx is muted and output is in High-Impedance Mode (see Table 2).
0 = Normal operation.
BYPEN
1 = DPST analog bypass switch is closed.
0 = DPST analog bypass switch is open.
SHDNB
1 = Normal operation.
0 = Low-power Shutdown Mode.
© 2009 Fairchild Semiconductor Corporation
FAB2200 • Rev. 1.0.1
25
www.fairchildsemi.com