Siemens TC65 Hardware Interface Description page 76

TC65 Hardware Interface Description
Strictly confidential / Draft
Function Signal name
Analog ADC_IN1
Digital
ADC_IN2
Converter
Digital DAC_OUT
Analog
Converter
Digital Audio
DAI0
interface
DAI1
DAI2
DAI3
DAI4
DAI5
DAI6
Analog VMIC
Audio
interface
EPP2
EPN2
EPP1
EPN1
MICP1
MICN1
MICP2
MICN2
AGND
TC65_HD_V00.521
IO Signal form and level
I Input voltage: V min = 0V, V
I
Ri ≈ 450kOhm
I
f max < 3kHz
C
Sensitivity, accuracy: 12 Bit
1 Bit = 0.585mV
O V max = 0.2V at I = 2mA
OL
V min = 2.55V at I = -0.5mA
OH
V max = 3.05V
OH
O V max = 0.2V at I = 2mA
OL
V min = 2.55V at I = -0.5mA
I
OH
V max = 3.05V
OH
O
O
V max = 0.8V
IL
V min = 2.0V
I
IH
V max = VEXTmin + 0.3V = 3.05V
I
IH
I
O V min = 2.4V
O
V typ = 2.5V
O
V max = 2.6V
O
I = 2mA
max
O 1.0954Vpp (differential) typical
O 3.4Vpp differential maximal
Audio mode TBD
Measurement conditions TBD
Minimum differential resp. single ended
load 27Ohms
O 1.0954Vpp (differential) typical
O 6.0Vp-p differential maximal
Audio mode TBD
Measurement conditions TBD
Minimum differential resp. single ended
load 7.5Ohms
I Full Scale Input Voltage
I 0dBm0 Input Voltage
At MICNx, apply external bias from 1.0V to
I
1.6V.
I
Audio mode TBD
Measurement conditions TBD
Analog Ground
Page 76 of 99
s
Comment
max = 2.4V Inputs used for measuring
I
external voltages.
ADC_IN1 and ADC_IN2 are
internally multiplexed through
analog switch.
PWM signal which can be
smoothed by an external filter.
See Table 10 for details.
If unused keep pins open.
Microphone supply for
customer feeding circuits
The audio output can directly
operate a 32-Ohm-
loudspeaker.
If unused keep pins open.
The audio output can directly
operate an 8-Ohm-
loudspeaker.
If unused keep pins open.
1.578Vpp Balanced or single ended
microphone or line inputs with
1.0954Vpp
external feeding circuit (using
VMIC and AGND).
If unused keep pins open.
GND level for external audio
circuits
24.05.2005