Table 11. Connector J9; Table 12. Connector J1 - ZiLOG eZ80L92 User Manual

eZ80L92 Development Kit
User Manual
30
Pin Symbol
1 MRESET
3 GND
6 D1
7 D2
8 D3
9 D4
Pin Symbol
2 MOD_DIS
4 V
CC
24 GND
25 PC4_DTR1 DTR interface; TTL levels.
26 PC6_DCD1 DCD interface; TTL levels.
27 PC3_CTS1 CTS interface; TTL levels.
28 PC5_DSR1 DSR interface; TTL levels.
29 PC7_RI1
30 PC0_TXD1 TxD interface; TTL levels.
31 PC1_RXD1 RxD interface; TTL levels.
32 PC2_RTS1 RTS interface; TTL levels.
Operational Description

Table 11. Connector J9

Description
Reset, active Low, 50–100ms. Closure to GND for reset.
Ground.
DCD indicator; can drive an LED anode without additional circuitry.
RxD indicator; can drive an LED anode without additional circuitry.
DTR indicator; can drive an LED anode without additional circuitry.
TxD indicator; can drive an LED anode without additional circuitry.

Table 12. Connector J1

Description
Modem disable, active Low.
+5 VDC or +3.3 VDC input.
Ground.
Ring Indicator interface; TTL levels.
PRELIMINARY UM012906-0103