Zilog eZ80F92 User Manual
Page 26
eZ80F92 Development Kit
User Manual
eZ80Acclaim!
®
Development Platform
UM013911-0607
22
mounted on the eZ80Acclaim!
®
Development Platform, because the
eZ80F92 Flash Module features the eZ80F92 microcontroller. To mount
an application module, use the two male headers J6 and J8.
Jumper J6 carries the General Purpose Input/Output ports (GPIO), and
jumper J8 carries memory and control signals. To design an application
module, the user should be familiar with the architecture and features of
the eZ80F92 Flash Module currently installed. Tables 4 and 5 list the sig-
nals and functions related to each of these jumpers by pin. Power and
ground signals are omitted for the sake of simplicity.
Table 4. GPIO Connector J6*
Signal
Pin #
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
Emulated Port A,
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
Emulated Port A,
Bit [7:1]
Bidirectional
Reserved
35
Note: *All of the signals are driven directly by the CPU.