Table 4. General-Purpose Port Connector J6 - ZiLOG eZ80L92 User Manual

face requires that the eZ80L92 Module also be mounted on the eZ80
Development Platform, because it (the eZ80L92 Module) contains the
eZ80L92 microprocessor. To mount an application module, use the two
male headers J6 and J8.
Jumper J6 carries the general-purpose port, and jumper J8 carries mem-
ory and control signals. To design an application module, the user should
be familiar with the architecture and features of the eZ80L92 Module cur-
rently installed. Tables 4 and 5 list the signals and functions related to
each of these jumpers by pin. Power and ground signals are omitted for
the sake of simplicity.
Signal Pin #
SCL 5
SDA 7
MOD_DIS 9
MWAIT 13
EM_D0 15
CS3 17
EM_D[7:1] 21,23,25,
27,29,31,
33
Reserved 35
Note: *All of the signals are driven directly by the CPU.
UM012906-0103

Table 4. General-Purpose Port Connector J6*

Function
2
I C Clock
2
I C Data
Modem Disable
WAIT signal for
the CPU
GPIO, Bit 0
Chip Select 3 of
the CPU
GPIO, Bit [7:1]
PRELIMINARY
eZ80L92 Development Kit
Direction Notes
Bidirectional
Bidirectional
Input If a shunt is installed between
pins 6 and 9, the modem
function on the eZ80
Development Platform is
disabled.
Input
Bidirectional
Output This signal is also present on
the J8.
Bidirectional
User Manual
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®
Operational Description
21