Zilog Z80195 Bedienungsanleitung PDF herunterladen (Seite 38)

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Z80185/195 DEVELOPMENT KIT

USER'S MANUAL

UM951800100

ZILOG

Serial Interface

The serial I/O pins of the Z80185/195 serial controller are connected to the J9–J13 connector blocks

through RS-232 or RS-422 drivers and receivers. J9–J12 are EIA-570 DB-25 connectors for the three

serial ports (ASCI0, ASCI1, and EMSCC) of the Z80185/195.

Jumper Description

J9 ASCI1, data (TXD and RXD) only, female, DTE or DCE

pinning.

J10 EMSCC, male DTE pinning.

J11 EMSCC, female DCE pinning.

J12 ASCI0, male DTE pinning.

J13 ASCI0, female DCE pinning.

The following option jumpers are associated with the above ports:

Jumper Numbers Description

J15 2–3 Insert jumper to use J10 or J11 rather than J16 with the

ESCC.

J15 4–5 Insert jumper to use RS-422 signaling on J10 and J10.

Remove to use RS-232.

J15 6–7 Insert jumper to use RS-422 signaling on J12 and J13.

Remove to use RS-232.

To use J9 as RS-232 DTE:

Jumper Numbers

J8 4–6, 7–9, 8–10

To use J9 as RS-232 DCE:

Jumper Numbers

J8 4–6, 7–8, 9–10

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 46 47

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Zilog Z80195 Bedienungsanleitung Seite 38