Zilog EZ80F91 Manual do Utilizador descarregar pdf (Página 41)

eZ80F91 Development Kit

User Manual

UM014220-0508 eZ80 Development Kit

The silk-screened label on the eZ80Acclaim!

Development Kit

for jumper J11 is incorrect. Currently, it reads DIS_FLASH. The

correct label is EN_FLASH.

Jumper J12

The J12 jumper connection controls the selection of a 5 V or 3 VDC

power supply to the embedded modem, if an embedded modem is used.

See Table 20.

Table 19. J11—EN_FLASH (Off-Chip)*

Shunt

Status Function Affected Device

IN All access to external Flash memory on the

eZ80190 Module is enabled.

External Flash memory on the

eZ80190 Module.

OUT All access to external Flash memory on the

eZ80190 Module is disabled.

External Flash memory on the

eZ80190 Module.

Note: As shipped from the factory, external Flash memory is not installed.

Table 20. J12—5 VDC/3.3 VDC for an Embedded Modem

Shunt

Status Function Affected Device

1–2 5 VDC is provided to power the embedded modem. Embedded modem.

2–3 3.3 VDC is provided to power the embedded modem. Embedded modem.

Note:

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 77 78

Sem comentários

Zilog EZ80F91 Manual do Utilizador Página 41