Serial Interface Port; Programming Port - Z-World Fox LP3500 User Manual

3.4.3 Serial Interface Port

The LP3500 offers a Serial Interface port at header
J6, a 2 mm 2 × 5 socket. This port may be used to
connect serial logic-level devices such as Z-World's
serial flash expansion cards to Serial Port D on the
Rabbit 3000.
Figure 14 provides the pinout for the Serial Inter-
face Port.

3.4.4 Programming Port

The LP3500 has a 10-pin programming header. The
programming port uses the Rabbit 3000's Serial
Port A for communication, and is used for the following operations.
• Programming/debugging
• Cloning
The programming port is used to start the LP3500 in a mode where the LP3500 will down-
load a program from the port and then execute the program. The programming port trans-
mits information to and from a PC while a program is being debugged.
The Rabbit 3000 startup-mode pins (SMODE0, SMODE1) are presented to the program-
ming port so that an externally connected device can force the LP3500 to start up in an
external bootstrap mode. The LP3500 can be reset from the programming port via the
/EXT_RSTIN line.
The Rabbit 3000 status pin is also presented to the programming port. The status pin is an
output that can be used to send a general digital signal.
NOTE: Refer to the Rabbit 3000 Microprocessor User's Manual for more information
related to the bootstrap mode.
28
J6
PIO_2
PF2_SRST
PIO_1 PB7_SFCS
PIO_0 PC0_STX
PF0_SCK Vcc
PC1_SRX GND
Figure 14. Serial Interface Port
(Header J6) Pinout
Fox (LP3500)