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RX, TX DC- Levels, Impedances
Table 24: RX, TX Characteristics
Symbol
Parameter
Ztx (*)
Output impedance at TX
Votx
Offset voltage on TX (PU=1)
(ref VAG)
Iouttx
TX output current capability
Vrx(*)
Rx input voltage range(ref. VAG)
Zrx
Rx input impedance
DCO DC- Levels, Impedances
These limits are generally transparent
to the user, but are given here for infor-
mation.
Table 25: DCO Characteristics
Symbol
Parameter
Zdco (*)
Output impedance at DCO
Vodco
Offset voltage on DCO(ref. VAG)
Ioutdco (*)
DCO output current capability
Zdci
Input impedance at DCI
VAG Analog Ground Input
The analog ground is typical half the
voltage of the V3V output voltage.
Table 26: VAG Characteristics
Symbol
Parameter
Vvag (**)
Voltage level at VAG pin CODSP
Ivag
VAG input current SH LIC
Test Conditions
f = 1 kHz
SA shorted to
AW and SB to
BW, DCI to V3V,
DCO to VAG
f = 1kHz
Test Conditions
SA shorted to
AW and SB to
BW
f=1kHz
It is the reference for all the analog
interfacing between SHLIC and the
CODSP. VAG is provided by the
CODSP.
Test Conditions
VAG=1.65V
32
MTK-40131
Limits
Min.
Typ.
Max.
10
-20
0
20
-1
0.05
-1
1
20
Limits
Min.
Typ.
Max.
10
-20
0
20
-1
0.05
210
Limits
Min.
Typ.
Max.
1.53
1.65
1.77
0.5
Unit
ohm
mV
mA
V
kohm
Unit
ohm
mV
mA
Kohm
Unit
V
mA
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