Specifications

AC65/AC75 Hardware Interface Description
5.5 Pin Assignment and Signal Description
s
AC65_AC75_HD_v01.002 Page 86 of 117 2006-10-30
Confidential / Released
USB VUSB_IN I V
IN
min = 4.0V
V
IN
max = 5.25V
All electrical characteristics
according to USB Implementers’
Forum, USB 2.0 Full Speed Spec-
ification.
Without Java: USB port
Under Java: Debug interface for
development purposes.
If lines are unused keep pins open.
USB_DN I/O Differential Output Crossover volt-
age Range
V
CRS
min = 1.5V, V
CRS
max = 2.0V
Line to GND:
V
OH
max = 3.6V
V
OH
typ = 3.2V
V
OH
min = 3.0V at I=-0.5mA
V
OL
max = 0.2V at I=2mA
V
IH
min = 2.24V
V
IL
max = 0.96V
Driver Output Resistance
Z
typ
= 32Ohm
Pullup at USB_DP R
typ
=1.5kOhm
USB_DP I/O
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.
Use the AT^SWDAC command to
open and configure the DAC_OUT
output.
General
Purpose
Input/Out-
put
GPIO1 I/O 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 = 2.15V,
V
IH
max = VEXTmin + 0.3V = 3.05V
Pulse counter:
pulse
~
|________|
~~~~~~~~~~~~~
|________|
~
~~
| ≥ 450µs | ≥ 450µs |
Slew rate <
1µs
Pulse rate: max. 1000 pulses per
second
All pins which are configured as
input must be connected to a pull-
up or pull-down resistor.
If lines are unused (not config-
ured) keep pins open.
Alternatively, the GPIO10 pin can
be configured as a pulse counter
for pulse rates from 0 to 1000
pulses per second.
GPIO2 I/O
GPIO3 I/O
GPIO4 I/O
GPIO5 I/O
GPIO6 I/O
GPIO7 I/O
GPIO8 I/O
GPIO9 I/O
GPIO10 I/O
Digital
Audio
interface
DAI0 O 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 = 2.15V
V
IH
max = VEXTmin + 0.3V = 3.05V
See Table 16 for details.
If unused keep pins open.
DAI1 I
DAI2 O
DAI3 O
DAI4 I
DAI5 I
DAI6 I
Table 26: Signal description
Function Signal name IO Signal form and level Comment