Zilog EZ80F91 Manuel d'utilisateur télécharger pdf (Page 30)

eZ80F91 Development Kit

User Manual

UM014220-0508 eZ80 Development Kit

Bits 6 and 7 in Table 15 are the control bits for the user triggers. If either

bit is a 1, the corresponding Trig1 and Trig2 signals are driven High. If

either bit is 0, the corresponding Trig1 and Trig2 signals are driven Low.

Embedded Modem Socket Interface

The eZ80Acclaim! Development Kit features a socket for an optional 56

K modem (a modem is not included in the kit).

Connectors J1, J5, and J9 provide connection capability. The modem

socket interface provided by these three connectors is shown in Figure 9.

Table 11 through Table 13 identify the pins for each connector. The

embedded modem utilizes UART1, which is available via the Port C pins.

Figure 8. Trigger Pins J21 and J22

J21

Trig2

J22

Trig1

Ground

Trigger output

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 77 78

Pas de commentaire

Zilog EZ80F91 Manuel d'utilisateur Page 30