54 PCIE-5565RC* Ultrahigh Speed Fiber-Optic Reflective Memory with Interrupts
Publication No. 500-9300875565-000 Rev. C.0
Bit 30: Transmitter Disable
– Setting this bit high (1) will manually turn OFF the
board’s transmitter. The default state of this bit after reset is
low (0) and the transmitter is enabled. When turning the
board’s transmitter back ON by setting this bit back to low
(0), an unspecified amount of time must be allowed to
provide for the turn-on time of the optics.
Bit 29:
Dark-on-Dark Enable
– When this bit is set high (1), the board’s
transmitter will be turned OFF if the board’s receiver does
not detect a signal or if the receiver detects invalid data
patterns. The dark-on-dark feature is useful in hub
configurations.
Bit 28:
Loopback Enable
– When this bit is set high (1), the fiber optic transmitter
and receiver are disabled and the transmit signal is looped
back to the receiver circuit internally. This allows basic
functional testing with or without an external cable.
Bit 27:Local Memory Parity Enable
– When this bit is set high (1), parity checking
is enabled when reading from the RFM-5565 SDRAM. Note
that parity works only on 32-bit and 64-bit accesses. Byte (8-
bit), Word (16-bit), and 24-bit memory write accesses are
inhibited while parity is enabled.
Bit 26: Redundant Mode Enabled
– When this bit is set high (1), redundant mode
of network transfers has been enabled. This bit is read-only.
Redundant mode is enabled by setting switch S1 position 1 in
the ON position.
Bit 25:Rogue Master 1 Enabled
– When this bit is set high (1), the board is
operating as Rogue Master 1. This bit is read-only. Rogue
Master 1 operation is enabled by setting switch S1 position 6
in the ON position.
Bit 24:Rogue Master 0 Enabled
– When this bit is set high (1), the board is
operating as Rogue Master 0. This bit is read-only. Rogue
Master 0 operation is enabled by setting switch S1 position 5
in the ON position.
Bit 23:
Reserved
– This bit is reserved.
Bits 22 and 19:Window 1 and Window 0
– The PCI PIO window size is selected
by setting S1 switch positions 3 and 4. Bit 19 (Window 0) is
connected to S1 switch position 3 (‘1’ when ON, ‘0’ when
OFF). Bit 22 (Window 1) is connected to S1 switch position 4
(‘1’ when ON, ‘0’ when OFF). These two bits indicate the
memory PCI PIO window size as defined in the following
table. The two bits are read only.
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