Datasheet

Rev. A | Page 43 of 80 | July 2011
ADSP-BF504/ADSP-BF504F/ADSP-BF506F
Universal Asynchronous Receiver-Transmitter
(UART) Ports—Receive and Transmit Timing
The UART ports receive and transmit operations are described
in the ADSP-BF50x Hardware Reference Manual.
General-Purpose Port Timing
Table 36 and Figure 25 describe general-purpose
port operations.
Table 36. General-Purpose Port Timing
Parameter
V
DDEXT
= 1.8 V V
DDEXT
= 2.5 V/3.3 V
Min Max Min Max Unit
Timing Requirement
t
WFI
General-Purpose Port Pin Input Pulse Width t
SCLK
+ 1 t
SCLK
+ 1 ns
Switching Characteristic
t
GPOD
General-Purpose Port Pin Output Delay from CLKOUT High 0 11.0 0 8.9 ns
Figure 25. General-Purpose Port Timing
CLKOUT
GPIO OUTPUT
GPIO INPUT
t
WFI
t
GPOD