ZLP128ICE01ZEM Zilog, ZLP128ICE01ZEM Datasheet - Page 74

• Manufacturer Part Number: ZLP128ICE01ZEM
• Description: EMULATOR CRIMZON Z8 ZLP12840
• Manufacturer: Zilog

Specifications of ZLP128ICE01ZEM

• Interface Type: RS-232, Ethernet, USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3829

PS024410-0108
CTR2 data bits [4:3]
Note:
Negative Edge
SCLK
Z8 LXM Data Bus
Z8 LXM Data Bus
Positive Edge
T16 TRANSMIT Mode
In NORMAL or PING-PONG mode, the output of T16 when not enabled, is dependent on
CTR1, bit 0. If it is a 0, T16_OUT is a 1; if it is a 1, T16_OUT is 0. You can force the
output of T16 to either a 0 or 1 whether it is enabled or not by programming CTR1 bits
[3:2] to a 10 or 11.
When bit 4 of CTR3 is set, the T16 output does not update. However, time-out interrupts
(Flags) are still updated. In addition, the T8 carrier is not disrupted by timing out of the
T16 timer.
When T16 is enabled, TC16H * 256 + TC16L is loaded, and T16_OUT is switched to its
initial value (CTR1, bit 0). When T16 counts down to 0, T16_OUT is toggled (in
NORMAL or PING-PONG mode), an interrupt (CTR2, bit 1) is generated (if enabled),
and a status bit (CTR2, bit 5) is set. See
Global interrupts override this function as described in the
If T16 is in SINGLE-PASS mode, it is stopped at this point (see
it is in MODULO-N mode, it is loaded with TC16H * 256 + TC16L, and the counting
continues (see
Select
Clock
Figure 26. 16-Bit Counter/Timer Circuits
TC16
Figure 28
Clock
HI16
P R E L I M I N A R Y
on page 69).
Counter T16
(TC16)
16-Bit
Figure
LO16
TC16
26.
CTR2 data bit 2
Interrupts
Product Specification
Figure 27
on page 85.
T16_OUT
CTR2 data bit 1
on page 69). If
IRQ3
Timers
68