Z86L88 Datasheet, PDF (60/80 Pages) Zilog, Inc. – INFRARED REMOTE CONTROLLERS

Z86L88
Low-Voltage IR Microcontroller
53
Enable
TC8
Time-out
Enable
Ping-Pong
CTR1, D3, D2
TC16
Time-out
Figure 41. Ping-Pong Mode
Starting Ping-Pong Mode
First, make sure both counter/timers are not running. Then set T8 into Single-
Pass Mode (CTR0 D6), set T16 into Single-Pass Mode (CTR2 D6), and set the
Ping-Pong Mode (CTR1 D2, D3). These instructions do not have to be in any par-
ticular order. Finally, start Ping-Pong Mode by enabling either T8 (CTR0 D7) or
T16 (CTR2 D7).
During Ping-Pong Mode
The enable bits of T8 and T16 (CTR0 D7, CTR2 D7) are set and cleared alter-
nately by hardware. The time-out bits (CTR0 D5, CTR2 D5) are set every time the
counter/timers reach the terminal count.
19-4614; Rev 0; 4/09