System Architecture
2-8
ADSP-BF538F EZ-KIT Lite Evaluation System Manual
UART Port
The universal asynchronous receiver/transmitter (UART) port of the pro-
cessor connects to the ADM3202 RS-232 line driver as well as to the
expansion interface. The RS-232 line driver connects to the DB9 female
connector, providing an interface to a PC and other serial devices.
Expansion Interface
The expansion interface consists of three 90-pin connectors.
shows the interfaces each connector provides. For the exact pinout of the
connectors, refer to
“ADSP-BF538F EZ-KIT Lite Schematic” on
page B-1
. The mechanical dimensions of the connectors can be obtained
.
Analog Devices offers many EZ-Extender products that plug on to the
expansion interface. For more information on these products, visit the
Analog Devices Web site at
.
Limits to the current and to the interface speed must be taken into consid-
eration when using the expansion interface. The maximum current limit is
dependent on the capabilities of the used regulator. Additional circuitry
also can add extra loading to signals, decreasing their maximum effective
speed.
[
Analog Devices does not support and is not responsible for the
effects of additional circuitry.
Table 2-2. Expansion Interface Connectors
Connector
Interfaces
J1
5V,
GND
, address, data, PPI
J2
3.3V,
GND
, SPI, NMI,
TMR2–0
,
SPORT0
,
SPORT1
,
PF15–0
, EBUI control signals
J3
5V, 3.3V,
GND
, UART, flash IO, reset, audio control signals