Zilog eZ80F92 Manual do Utilizador descarregar pdf (Página 40)

eZ80F92 Development Kit

User Manual

eZ80Acclaim!

Development Platform UM013911-0607

Jumper J3

The J3 jumper connection controls Port A emulation mode and communi-

cation with the 7 x 5 LED. When the shunt is placed, Port A emulation is

disabled. See Table 14.

Jumper J7

The J7 jumper connection controls Flash boot loader programming. When

the shunt is placed, overwriting of the Flash boot loader program is

enabled. See Table 15.

Table 14. J3—DIS_EM

Shunt

Status Function Affected Device

In Application Module

Hardware Disabled

Communication with 7 x 5 LED and Port emulation

circuit is disabled.

Out Application Module

Hardware Enabled

Communication with 7 x 5 LED and Port A emulation

circuit is enabled.

Table 15. J7—FlashWE

(Off-Chip)*

Shunt

Status Function Affected Device

Out The Flash boot sector of the eZ80F92

Flash Module is write-protected.

Flash boot sector of the eZ80F92 Flash

Module.

In The Flash boot sector of the eZ80F92

Flash Module is enabled for writing or

overwriting.

Flash boot sector of the eZ80F92 Flash

Module.

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

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