Zilog EZ80L92 User Manual
Page 25
eZ80L92 Development Kit
User Manual
UM012913-0407
Operational
Description
21
Jumper J6 carries the general-purpose port and jumper J8 carries memory
and control signals. To design an application module, you must be
familiar with the architecture and features of the installed eZ80L92
Module.
and
list the signals and functions related to each
of these jumpers by pin. Power and ground signals are omitted for the
sake of simplicity.
Table 4. General-Purpose Port Connector J6*
Signal
Pin No.
Function
Direction
Notes
SCL
5
I
2
C Clock
Bidirectional
SDA
7
I
2
C Data
Bidirectional
MOD_DIS
9
Modem Disable
Input
If a shunt is installed between
pins 6 and 9, the modem
function on the eZ80Acclaim!
®
Development Platform is
disabled.
MWAIT
13
WAIT signal for
the CPU
Input
EM_D0
15
GPIO, Bit 0
Bidirectional
CS3
17
Chip Select 3 of
the CPU
Output
This signal is also present on
the J8.
EM_D[7:1]
21,23,25,
27,29,31,
33
GPIO, Bit [7:1]
Bidirectional
Reserved
35
PC[7:0]
39,41,43,
45,47,49,
51,53
Port C, Bit [7:0]
Bidirectional
Note: All signals are driven directly by the CPU.