Zilog EZ80L92 Uživatelský manuál stáhnout pdf (Strana 39)

eZ80L92 Development Kit

User Manual

UM012913-0407 Operational Description

Jumper J3

The J3 jumper connection controls the mode of the general-purpose port

and communication with the 7 x 5 LED. When the shunt is placed, the

general-purpose port 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 the

general-purpose port circuit is enabled.

Table 15. J7—FlashWE

Shunt

Status Function Affected Device

OUT The Flash boot sector of the

eZ80L92 Module is write-

protected.

Flash boot sector of the eZ80L92 Module.

IN The Flash boot sector of the

eZ80L92 Module is enabled for

writing or overwriting.

Flash boot sector of the eZ80L92 Module.

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 85 86

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Zilog EZ80L92 Uživatelský manuál Strana 39