EES3 Hardware Interface Description
5.5 Pad Assignment and Signal Description
99
EES3_HD_v01.100b
Page 88 of 118
2009-08-12
Confidential / Released
Analog
Audio
interface
VMIC
O
V
O
min = 2.4V
V
O
typ = 2.5V
V
O
max = 2.6V
I
max
= 2mA
Microphone supply for cus-
tomer feeding circuits
EPP2
O
3.0Vpp differential typical @
0dBm0
4.2Vpp differential maximal @
3.14dBm0
Measurement conditions:
Audio mode: 6
Outstep 3
No load
Minimum differential resp. single
ended load 27Ohms
The audio output can directly
operate a 32-Ohm-loud-
speaker.
If unused keep lines open.
EPN2
O
EPP1
O
4.2Vpp (differential) typical @
0dBm0
6.0Vpp differential maximal @
3.14dBm0
Measurement conditions:
Audio mode: 5
Outstep 4
No load
Minimum differential load
7.5Ohms
The audio output can directly
operate an 8-Ohm-loud-
speaker.
If unused keep lines open.
EPN1
O
MICP1
I
Full Scale Input Voltage: 1.6 Vpp
0dBm0 Input Voltage: 1.1 Vpp
At MICN1, apply external bias from
1.0V to 1.6V.
Measurement conditions:
Audio mode: 5
Balanced or single ended
microphone or line input with
external feeding circuit (using
VMIC and AGND).
If unused keep lines open.
MICN1
I
MICP2
I
Full Scale Input Voltage1.6 Vpp
0dBm0 Input Voltage1.1 Vpp
At MICN2, apply external bias from
1.0V to 1.6V.
Measurement conditions:
Audio mode: 6
Balanced or single ended
microphone or line input with
external feeding circuit (using
VMIC and AGND) and acces-
sory detection circuit.
If unused keep lines open.
MICN2
I
AGND
Analog Ground
GND level for external audio cir-
cuits
Table 27:
Signal description
(Continued)
Function
Signal name
IO
Signal form and level
Comment