Scanlab RTC 5 PC Interface Board Installation And Operation Manual page 579

15.2.2 Interface to the CPU board
Data transfer between the CPU board and the
®
RTC 5 PC/104-Plus board is via the PCI bus. The
®
RTC 5 PC/104-Plus board provides 120-pin PCI stack-
through connectors (see figure 61 on page
timing and signal levels of the PCI signals are in
compliance with PCI Local Bus Specification
Revision 2.2. 64-bit extensions, JTAG, PRSNT and
CLKRUN signals are not supported.
®
On the ISA bus, the RTC 5 PC/104-Plus board only
uses the +5 V power provided at pins B3, B29 and
D16 (for more power supply information, also see
page 585). The other signals of the ISA bus are simply
forwarded via the 104-pin ISA stack-through
connectors to further boards in the stack and are not
®
used by the RTC 5 PC/104-Plus board.
Caution!
®
• The RTC 5 PC/104-Plus board does not support
power-saving modes that switch off power to
the PCI bus. Accordingly, you must disable
standby or sleep modes of the operating
system. Also see the note on
15.2.3 Master/Slave Synchronization
If multiple synchronously-clocked RTC
boards are to be used in a PC/104 stack, then the
®
RTC 5 PC/104-Plus boards must be connected
pairwise with each other via the MASTER and SLAVE
connectors and installed in adjacent stack positions.
Always connect a board's MASTER connector to the
SLAVE connector of another board. Suitable
connection cables are available from SCANLAB.
Also see chapter 6.6.3 "Master/Slave Operation",
page 84 and "Starting and Stopping Lists via External
Control Signals and Master/Slave Synchronization",
page 209.
®
RTC 5 PC Interface Board
Rev. 1.9 e
®
15 Appendix A: The RTC 5 PC/104-Plus Board
15.2.4 Interfaces to Scan System
For digitally controlling scan systems, the 20-pin
SCANHEADS connector provides the primary scan
head connection (pins 1 through 10) and the
577). The optionally activated secondary scan head connection
(pins 11 through 20) (see
this connector, scan-system control values are trans-
mitted and scan-system status signals received.
Figure 63
connector.
+3.3 V (DO NOT CONNECT) (3)
+3.3 V (DO NOT CONNECT) (13)
Pin-out of the SCANHEADS connector
(* Signal only optionally activated)
The SCANHEADS connector provides the same signals
page 27.
as the SCAN HEAD and 2. SCAN HEAD connectors of
the RTC
(via an XY2-100 converter, if needed) is identical to
that of the RTC
®
mation in
5 PC/104-Plus
page
figure 61 on page
shows the pin-out of the SCANHEADS
DATA IN 1+ (1)
NOT CONNECTED (5)
NOT CONNECTED (7)
DATA OUT 1+ (9)
DATA IN 2+* (11)
NOT CONNECTED (15)
NOT CONNECTED (17)
DATA OUT 2+* (19)
®
5 PC interface board. Scan system control
®
5 PC interface board. Note the infor-
chapter 4.3 "Interfaces to Scan System",
41.
577). At
(2) DATA IN 1 –
(4) GND
(6) GND
(8) DATA OUT 1 –
(10) NOT CONNECTED
(12) DATA IN 2 – *
(14) GND
(16) GND
(18) DATA OUT 2 – *
(20) NOT CONNECTED
63
579