N681622YG Nuvoton Technology Corporation of America, N681622YG Datasheet - Page 93

• Manufacturer Part Number: N681622YG
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of N681622YG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

“ RES ” in the register map means reserved bit(s).
High pass filter cutoff is only programmable in the Wideband mode.
“ RES ” in the register map means reserved bit(s).
The following table explains the Loop Back Control Register bits.
Location
Addr.
0x20
Addr.
0x21
Preliminary Datasheet Rev1.0
Bit
0
1
2
3
4
6
7
DACFF
14.4. SYSTEM REGISTERS
14.4.1. PCM HPF (HIGH PASS FILTER)
14.4.2. LOOP BACK CONTROL REGISTER
[5]
Name
0
0
1
1
Name
PHF
High Pass Filter Select DAC
Digital loop back (D/A to A/D)
Digital loop back (LP interpolation filter to LP decimation
filter)
Digital loop back (A/u law expander to A/u law compander)
Analog Loop back 1
Analog Loop back 2
Invert ADC input Polarity
Invert DAC Output Polarity
LB
Location
Bit
0
1
7
DACFF
DACLP
DACPOL
D7
[4]
0
1
0
1
D7
PCM Transmit HPF (DAC)
PCM Receive HPF (ADC)
LPF for Wideband (DAC)
Bit Description
Select (Hz)
Bit Description
DAC HPF
ADCPOL
RES
D6
160
20
40
80
D6
Page 93 of 164
D5
DACFF[1:0]
RES
D5
DACHP
ADCHP
DACLP
Bit Name
D4
ALP2
D4
Single Programmable Extended Codec/SLCC
D3
ADCFF[1:0]
ALP1
D3
ADCFF
Enable
Enable
Disable
[3]
0
0
1
1
High Pass Filter Select ADC
DLP1
DLP2
DLP3
ALP1
ALP2
ADCPOL
DACPOL
0
Bit Name
D2
DLP3
D2
Bit Value
ADCFF
ADCHP
Disable
Disable
Enable
[2]
D1
0
1
0
1
DLP2
D1
Disable
Disable
Disable
Disable
Disable
Disable
Disable
N681386/87
1
0
DACHP
Select (Hz)
DLP1
Bit Value
ADC HPF
D0
D0
January 2010
160
20
40
80
Enable
Enable
Enable
Enable
Enable
Enable
Enable
Default
Default
0x00
0x80
1