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