N681622YG Nuvoton Technology Corporation of America, N681622YG Datasheet - Page 116

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

Specifications of N681622YG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Addr.
0x5F
“ RES ” in the register map means reserved bit(s).
The DC bias current flows through external BJTs in the both On-Hook Transmission and in Active Off-Hook State.
Increasing this value (External Transistor Bias Levels) increases the TIP to RING peak of the differential AC current.
Addr.
0x60
0x61
Preliminary Datasheet Rev1.0
Location
Bit
2
3
4
5
6
Name
XBTC
14.8. GROUND KEY DETECTION
14.8.1. LINEFEED CONTROL
14.8.2. GROUND KEY DETECT HIGH/LOW THRESHOLD
GKDH
GKDL
Name
DC Bias Current OFF-Hook
DC Bias Current On-Hook TR
Ringer Bias Enable
Capacitor Bypass
Audio Mute
RES
D7
Bit Description
D7
RES
RES
ASQH
Range
D6
XTBA1
0
0
1
1
Minimum
CBP
Current Limit adjustment
D5
D6
0 A
Page 116 of 164
GKD HIGH/LOW THRESHOLD
XTBOT0
XTBOT1
XBEN
CBP
ASQH
Bit Name
XTBA0
0
1
0
1
D5
XBEN
Maximum
D4
80 mA
8 mA
4 mA
Disable
capacitors CP() and CM
(C2) in circuit
STIPAC and SRINGAC
pins are not muted
DC Bias Current
D4
Single Programmable Extended Codec/SLCC
Nominal ILIM
+1 mA
+2 mA
XTBOT1
-1 mA
D3
HGKD[7:0]
D3
LGKD[7:0]
Increment
0
1.27mA
D2
XTBOT0
Bit Value
D2
D1
4 mA
8 mA
Enable
Capacitors CT and CR
bypassed
STIPAC and SRINGAC
pins are muted
N681386/87
D1
XTBAT[1:0]
D0
1
January 2010
D0
Default
0x00
0x00
Default
0x00