Publication No. PPC11A-HRM/1
Connectors 117
6.1.4 Backplane Signal Definitions
NOTE
For more signal descriptions, see the
Standard Interfaces
section.
Table 6-5 Backplane Connector Signal Definitions
Signal
Description
AXIS_CLK, AXIS RST~
AXIS clock and reset signals respectively (required for Abaco AXIS software support)
BIT0, BIT1
Currently undefined
BIT_FAIL_OUT~
BIT Fail Output. Reflects the status of the BIT Fail LED. This output is open-drain and so may be used to wire-OR
signals from several boards. The output also has a series current limiting resistor and so may be used to drive an LED
directly
BO0T0, BOOT1
Currently undefined
BP_GPIO[18:0]
General Purpose I/O signals
CHx_1553_RTAD[4:0]
Channel x (x = 1 or 2) 1553 Remote Terminal Address bits
CHx_1553_RTADP
Channel x (x = 1 or 2) 1553 Remote Terminal Address parity (odd)
CHx_1553_AD_LAT
1553 channel x (x = 1 or 2) address latch
CHx_1553_TXINHA_B
Channel x (x = 1 or 2) inhibit transmission on 1553 bus
CHx_1553_TAG_CLK
Channel x (x = 1 or 2) time tag attached to 1553 messages
CHx_1553_RT_BOOT
1553 channel x (x = 1 or 2) boot in RT mode selector
CHx_1553_EXT_TRIG
1553 channel x (x = 1 or 2) external trigger. In BC mode, this controls the start of processing BC commands. In
Monitor mode, it is used to start monitor functionality. IN RT mode it can be used to control the Subsystem Flag bit of
the RT Status Word
CHx_1553_IDCSAP/N
Direct-coupled, positive/negative sense on redundant 1553 bus A of channel x (x = 1 or 2)
CHx_1553_ITCSAP/N
Transformer-coupled, positive/negative sense on redundant 1553 bus A of channel x (x = 1 or 2)
CHx_1553_ISGNDA/B
Center tap of isolation transformer on redundant 1553 bus A/B of channel x (x = 1 or 2)
CHx_1553_IDCSBP/N
Direct-coupled, positive/negative sense on redundant 1553 bus B of channel x (x = 1 or 2)
CHx_1553_ITCSBP/N
Transformer-coupled, positive/negative sense on redundant 1553 bus B of channel x (x = 1 or 2)
COMn_CTS
Serial port n (n = 1 or 2) Clear to Send input (RS232 mode)
COMn_CTS_A/B
Serial port n (n = 3 to 6) Clear to Send input A/B. See the
COMn_RTS
Serial port n (n = 1 or 2) Ready to Send output (RS232 mode)
COMn_RTS_A/B
Serial port n (n = 3 to 6) Ready to Send output A/B. See the
COMn_RXD
Serial port n (n = 1 or 2) Receive Data input (RS232 mode)
COMn_RXD_A/B
Serial port n (n = 3 to 6) Receive Data input A/B
COMn_TXD
Serial port n (n = 1 or 2) Transmit Data output (RS232 mode)
COMn_TXD_A/B
Serial port n (n = 3 to 6) Transmit Data output A/B See the
DVI_TDCx_N/P
DVI data channel x (x = 0 to 2)
DVI_TLC_N/P
DVI clock
ETHx_Nn/P
Gigabit Ethernet Channel (x=0-3) differential pair n (n = 0 to 3)
EXT_RESET~
External Hard Reset Input. Pulling this input low will cause a hard reset to the PPC11A. Any switch logic should be
debounced externally
FLASH_PW_UL~
Replicates the effect of the
(signals are ORed in the FPGA)
GA[4:0]~
Geographical Addressing bits. Reflected in the
Backplane Status Register (0x6CA)
Continued overleaf