N681622YG Nuvoton Technology Corporation of America, N681622YG Datasheet - Page 57

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

Specifications of N681622YG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Complex Impedance Settings are realized using the Impedance Matching Coefficients loaded into IMRAM 0xF3 using
control functions in IMCTRL 0xF5. In this case IM1:ZR1[3:0] should be should be set to 0 (600 Ohm Setting).
ILIM:ZCPEN[6] should be disabled for Complex Impedance Settings.
When the selected input data source is equal to zero for 1024 consecutive sample cycles, a mute signal is asserted
to the analog front end to mute the line output signal. The control output is de-asserted on the first non-zero sample.
Automute is enabled by setting AUTOMT:AUTOMTEN[7] address (0x5E). Automute has the capability of selecting
two different options such as either DAC and ADC data or only DAC data by AUTOMTSEL[6] address (0x5E).
AMT
AMT
Register
Preliminary Datasheet Rev1.0
AMTEN[7]
AMTSEL[6]
12.1.6.1.5.
Bit(s)
India, New Zealand
Germany (Legacy)
UK (Legacy)
Australia
Table 25: Examples of Complex Impedance Matching
Country
Address
0x5E
0x5E
DAC/ADC AUTOMUTE
Table 26: Registers for Automute
Linear
u-Law
A-law
Modes
Automute Enable
Automute Select
Automute Threshold
Page 57 of 164
Parameter
R1(Ohm)
Requirement Impedance Element
370
220
320
220
AMTTHR[5:0]
Single Programmable Extended Codec/SLCC
0
0
8
R2(Ohm)
0 = Automute disabled (default)
1 = Automute enabled
0 = DAC data+ADC data (default)
1 = DAC data only
1050
620
820
820
(Unit)
Description / Range
C(Farad)
310n
115n
230n
120n
N681386/87
January 2010