20-101-1051 Datasheet, PDF (42/165 Pages) List of Unclassifed Manufacturers – C-Programmable Core Module with NAND Flash Mass Storage and Ethernet

4.3 Serial Programming Cable
The programming cable is used to connect the serial programming port of the RCM3365/
RCM3375 to a PC serial COM port. The programming cable converts the RS-232 voltage
levels used by the PC serial port to the CMOS voltage levels used by the Rabbit 3000.
When the PROG connector on the programming cable is connected to the RCM3365/
RCM3375 serial programming port at header J1, programs can be downloaded and
debugged over the serial interface.
The DIAG connector of the programming cable may be used on header J1 of the RCM3365/
RCM3375 with the RCM3365/RCM3375 operating in the Run Mode. This allows the pro-
gramming port to be used as a regular serial port.
4.3.1 Changing Between Program Mode and Run Mode
The RCM3365/RCM3375 is automatically in Program Mode when the PROG connector
on the programming cable is attached, and is automatically in Run Mode when no pro-
gramming cable is attached. When the Rabbit 3000 is reset, the operating mode is deter-
mined by the state of the SMODE pins. When the programming cable’s PROG connector
is attached, the SMODE pins are pulled high, placing the Rabbit 3000 in the Program
Mode. When the programming cable’s PROG connector is not attached, the SMODE pins
are pulled low, causing the Rabbit 3000 to operate in the Run Mode.
36
J8
GND
NC
GND
+3.3 V
VBT
VRAM
/RES
SM0
SMODE1
/IORD D2
/IOWR
PG5
PG4 _L1
PG6
PG7
PE0
PE1
PE3
PE4
PE5 _R12
PE6
PF7
PF5
R67
PB7
PB6
R68 ^C8
PB5
PB4
R69
R70
PB3
PB2
PB0
/RES_OUT
C1
U4
RCM3300
PROTOTYPING
BOARD
R1
D1
C2
C3
U2
L293D
H-DRIVER
U1 J10
R13
C4
OUT
OUT 00 01 02 03 04 05 06 07
RP1 RP2
U5
R16
R15
PF0_CLKD
PF0_QD
U3
L293D
H-DRIVER
R14
C5
BT1
R52 R53
R60 R61
U7
R8 U6 C6
R9
RABBITNET
J11
ACT
PD7
PD3
PD5
PG3
PG1
PC7
PC5
PC3
PC1
PF0
PF2
PA0
PA2
PA4
PA6
STAT
J9
LINK
PD6
PD2
PD4
PG2
PG0
PC6
PC4
PC2
PC0
PF1
PF3
PA1
PA3
PA5
PA7
GND
S1
RESET
CORE MODULE
GND/EGND
+5 V
GND
+3.3 _RV _X13
CX1
RX14
RX15
RX16
RX17
RX18
UX1
SO20W
UX4
DX1
JA
R25 R26
S2
U8
C16
R21 R22 R23 R24
Q1 Q2 Q3 Q4
JB
R27 R28
J12
R50
D4 D5 D6 D7
Q6
R49
CORE
S3
DS2 DS3 DS4 DS5 DS6
CX2
UX2
SO20W
J13
U9
C22
C23
J14
C24
UX5
DX2
U10
R35
R36
JP5
C26
R38
TxE RxE GND TxF RxF 485+ GND 485–
+5 V
GND
+3.3 V
R39 J15
J16
LCD1JA
J17
Prog_R40ra^Cm¹⁹ min^R4g² Cable
K1
U11
U12
To
D8 PC COM port
C29 C30
KEYPAD DISPLAY BOARD
Q5
R47
Co^LCDl¹o^JB red edge
LCD1JC
RESET
RESET RCM3365/RCM3375 when changing mode:
Momentarily short out pins 28–32 on RCM33600/RCM33610 header J4, OR
Press RESET button (if using Prototyping Board), OR
Cycle power off/on
after removing or attaching programming cable.
Figure 9. Switching Between Program Mode and Run Mode
RabbitCore RCM3365/RCM3375