IRCC SMSC Corporation, IRCC Datasheet - Page 74

• Manufacturer Part Number: IRCC
• Description: INFRARED COMMUNICATIONS CONTROLLER
• Manufacturer: SMSC Corporation

IOCHRDY Timer
The 10us IOCHRDY Timer is initialized when
IOCHRDY is active. The timer count sequence
is activated when IOCHRDY goes inactive.
IOCHRDY becomes active before the 10us time-
FIFO Not Empty
FIGURE 46 - VALID I/O READ READY CYCLE
IOCHRDY Time-out
String M ove
IOCHRDY
FIFO Not Empty
FIGURE 47 - IOCHRDY 10uS TIME-OUT
String Move
AEN
IOCHRDY
IOR
AEN
IOR
If
74
Timer
Start
out has elapsed, the timer is stopped and the
count is re-initialized. If IOCHRDY is still inactive
when the 10us time-out occurs, the timer stops,
the time-out error bit is set, IOCHRDY is re-
asserted, and the string move bit is reset (Figure
47).
24ns (max)
10us
IOCHRDY
Error
10us (max)