Zilog Z86E07 - Manual (Page 15)

2-5
C50 ICEBOX
U SER ' S M ANUAL
Setting Up the Oscillator and Option Jumpers. The oscillator and option jumpers are
accessible on top of the emulator (see Figure 2-3). The clock for the emulated Z8 CCP ™
can be provided from an oscillator in the emulator or from a TTL-level clock on your design.
For electrical reasons, it cannot be provided from the oscillator on your design until you’re
done using the emulator and have done one of three things: 1) programmed an EPROM
or OTP Z8
and installed it in your design, 2) programmed an external EPROM and installed
it and a ROMless Z8 in your design, or 3) installed a masked-ROM Z8 in your design.
Note: Each emulator is shipped with a standard oscillator, typically 12 MHz. If you want
another rate, remove the stock oscillator and install a different one.
The option jumpers, which are located on the top cover, allow you to configure things like
whether the emulator provides power to your design on the V
cc
pin(s) of the emulated Z8
CCP, and how the clock pin of the emulated Z8 CCP is connected (refer to Table 2-1).
UM009701-0201