Zilog EZ80F916 User Manual
Page 24
eZ80F91 Modular Development Kit
User Manual
UM017010-0112
GPRS Wireless Modem Interface
19
The pins on Connector J12 are not connected to any MDS board signals.
Table 5. eZ80Acclaim! MDS Adapter Board GPRS
Wireless Modem Connector J3 Identification
Pin
Symbol
Signal Direction
Active Level
eZ80F91 Signal
1
unused
n/a
n/a
n/a
2
GND
n/a
n/a
Yes
3
unused
n/a
n/a
n/a
4
VCC_5V
n/a
n/a
No
5–23
unused
n/a
n/a
n/a
24
GND
n/a
n/a
Yes
25
PC4_DTR1
Output
Low
Yes
26
PC6_DCD1
Input
Low
Yes
27
PC3_CTS1
Input
Low
Yes
28
PC5_DSR1
Input
Low
Yes
29
PC7_RI1
Input
Low
Yes
30
PC0_TXD1
Output
n/a
Yes
31
PC1_RXD1
Input
n/a
Yes
32
PC2_RTS1
Output
Low
Yes
Table 6. eZ80Acclaim! MDS Adapter Board GPRS
Wireless Modem Connector J11 Identification
Pin
Symbol
Signal Direction
Active Level
eZ80F91 Signal
1
RST
Output
Low
Yes
2
GND
n/a
n/a
Yes
Note:
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