Default = 鈥?0鈥?/div>
00 - Active high; high output indicates interrupt condition has occurred
01 - Active low, low output indicates an interrupt condition has occurred
10 - Open drain, active low. Requires an external pull-up resistor on the INT pin. Thus it is not recom-
mended to multiplex INT onto GPO2 in I
2
C control port mode since an external resistor is re-
quired on GPO2 to specify the AD2 bit of the chip address.
11 鈥?Reserved
CHS 鈥?Sets which channel's C data is decoded in the Receiver Channel Status register
0 鈥?A channel
1 鈥?B channel
8.3
Control2 (02h)
7
DETCI
6
5
4
EMPH_CNTL2 EMPH_CNTL1 EMPH_CNTL0
3
GPO0SEL3
2
GPO0SEL2
1
GPO0SEL1
0
GPO0SEL0
DETCI
鈥?D to E status transfer inhibit
Default = 鈥?鈥?/div>
0 鈥?Allow update
1 鈥?Inhibit update
Emph_CNTL[2:0]
鈥?De-emphasis filter control
Default = 000
000 鈥?De-emphasis filter off
001 鈥?32 KHz setting
010 鈥?44.1 KHz setting
011 鈥?48 KHz
100 鈥?50us/15us de-emphasis filter auto-select on. Coefficients(32, 44.1 or 48 KHz or no de-empha-
sis filter at all) match the pre-emphasis and sample frequency indicators in the channel status bits of
Channel A. Thus it is impossible to have de-emphasis applied to one channel but not the other. Also
it turns off the de-emphasis filter if the audio data is detected to be non-linear data.
GPO0SEL[3:0] 鈥?/div>
GPO0 Source select. See GPO section in main text for settings table.
Default = 0000
8.4
7
Control3 (03h)
6
5
4
3
2
1
0
GPO1SEL3
GPO1SEL2
GPO1SEL1
GPO1SEL0
GPO2SEL3
GPO2SEL2
GPO2SEL1
GPO2SEL0
26
DS578PP2
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