Zilog EZ80L92 Instrukcja Użytkownika Pobierz pdf (Strona 25)

eZ80L92 Development Kit

User Manual

UM012913-0407 Operational Description

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. Table 4 and Table 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.

Table 4. General-Purpose Port Connector J6*

Signal Pin No. Function Direction Notes

SCL 5 I

C Clock Bidirectional

SDA 7 I

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,

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.

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 85 86

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