Jumpers
PHYTEC Messtechnik GmbH 2005 L-602e_3
15
The jumpers (J = solder jumper) have the following functions:
Default Setting
Alternative Setting
J1
(1+2)
external ROM/ Flash
active
(2+3)
internal ROM/Flash
active
J2
(closed)
Pin 23 of U1 on VCC
(open)
U1/
Pin 23 not connected
J3
(closed)
Pin 1 of U1 on GND
(open)
U1/
Pin 1 not connected
J4
(1+2)
PLD enable
(2+3)
PLD disable
J5,
J6
(open)
standard RAM
(closed) fast RAM without
battery buffer
J7
(1+2)
fast RAM without
battery buffer
(2+3)
standard RAM with
battery buffer
J8,
J9
(closed) on-board RS-232
transceiver connected
to P3.0 and P3.1
(open)
Ports P3.0 and P3.1 can
be used as digital I/O
at phyCORE-connector
(X1D11/X1E11)
J10,
J11
(1+2)
P4.0 and P4.1
connected to RS-232
transceiver
(2+3)
P4.0 and P4.1
connected to RS-485
transceiver
J12,
J13
(1+2)
second serial interface
as RS-232
(X1E14/X1F13)
(2+3)
second serial interface
as RS-485
(X1E14/X1F13)
J14
(open)
RS-485 transceiver
disabled
(2+3)
P1.5 enables RS-485
transceiver
(open)
EEPROM without
write protect function
(closed) EEPROM with
write protect function
J16,
J17
1
(closed) I²C EEPROM and
I²C-RTC connected
to controller
(open)
I²C EEPROM and
I²C-RTC disconnected
from controller
J18
1
(2+3)
1 kByte EEPROM
(1+2)
512 Byte EEPROM
J19
(2+3)
/INT1 connected to
RTC
(1+2)
/INT0 connected to
RTC
J20
(1+2)
RxD0 used for remote
boot function
(2+3)
RxD1 used for remote
boot function
(2+4)
SDA used for remote
boot function
Table 2:
Jumper Settings Overview
1
:
The EEPROM at U12 is not supported in the current revision of the phyCORE-P8xC51Mx2
(1199.0). These jumpers are reserved for future versions of the module.
Содержание phyCORE-P8xC51Mx2
Страница 1: ...A product of a PHYTEC Technology Holding company phyCORE P8xC51Mx2 Hardware Manual Edition April 2005...
Страница 22: ...phyCORE P8xC51Mx2 14 PHYTEC MMesstechnikGmbH 2005 L 602e_3 Figure 7 Location of the Jumpers Bottom View...
Страница 46: ...phyCORE P8xC51Mx2 38 PHYTEC MMesstechnikGmbH 2005 L 602e_3...
Страница 50: ...phyCORE P8xC51Mx2 42 PHYTEC MMesstechnikGmbH 2005 L 602e_3...
Страница 82: ...Published by PHYTEC Messtechnik GmbH 2005 Ordering No L 602e_3 Printed in Germany...