101-0788 Rabbit Semiconductor, 101-0788 Datasheet - Page 24
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101-0788
Manufacturer Part Number
101-0788
Description
COMPUTER SGL-BOARD OP6600 W/SRAM
Manufacturer
Rabbit Semiconductor
Datasheet
1.101-0412.pdf
(90 pages)
Specifications of 101-0788
Module/board Type
Single Board Computer Module
For Use With/related Products
OP6600
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
101-788
101-788
101-788
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3.2 Serial Communication
In the factory-default configuration, the Intellicom has one RS-232 (3-wire) serial channel,
one RS-485 serial channel, and one synchronous CMOS serial channel. The Intellicom may
be configured for 5-wire RS-232 or two 3-wire RS-232 channels. The exact configuration
instructions depend on the version of Intellicom board you have. This information is
etched on the bottom side of the printed circuit board, or you can readily determine your
version by examining the diagrams below to find the one that matches your board.
Version 175-0188 Rev. A & B
The RS-232 transceiver may be used as a 5-wire RS-232 channel or as two 3-wire RS-232
channels at the expense of the RS-485 channel by adding 0 Ω surface-mounted resistors at
R61 and R62 as shown in Figure 8(a). The RS-485 chip (U10) and the associated bias and
termination resistors (R58, R59, and R60) shown in Figure 9(a) must be removed when
configuring the Intellicom for either one 5-wire RS-232 or two 3-wire RS-232.
Table 2(a) summarizes the options. Note that the parameters in the
function call must also be set to match the hardware configuration being used.
20
Table 2(a). Serial Communication Configurations (Version 175-0188 Rev. A & B)
R58–R60
R61–R62
U10
J7-3 & J5-3
J7-4 & J5-4
J7-6
J7-7
Item
Figure 8(a). Intellicom RS-232/RS-485 Serial Communication Options
FD
In
Out
In
RS-485+
RS-485–
TxC
RxC
One 3-wire RS-232
& RS-485
Two 3-wire RS-232 One 5-wire RS-232
Out
In
Out
TxB
RxB
TxC
RxC
Intellicom (OP6600/OP6700)
Out
In
Out
TxB
RxB
RTS
CTS
serMode
W
W
W
W
W
software
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