Table 22. Additional Connections & Interface To External Transceiver - DDC Total-AceXtreme MIL-STD-1553 Design Manual

Table 22. Additional Connections & Interface to External Transceiver
Utilizing Internal
Signal Name
nSINGEND(I) Connect to
+3.3V_LOGIC or
leave floating if
using built-in
transceivers.
TXDATA_OUT_A (O) These two signals
MUST be directly
connected for
normal "Built-In"
TXDATA_IN_A (I)
transceiver
operation.
TXDATA_OUT_A_L (O) These two signals
MUST be directly
connected for
normal "Built-In"
TXDATA_IN_A_L (I)
transceiver
operation.
TXDATA_OUT_B (O) These two signals
MUST be directly
connected for
normal "Built-In"
TXDATA_IN_B (I)
transceiver
operation.
TXDATA_OUT_B_L (O) These two signals
MUST be directly
connected for
normal "Built-In"
TXDATA_IN_B_L (I)
transceiver
operation.
TXINH_OUT_A (O) These two signals
MUST be directly
connected for
normal "Built-In"
transceiver
operation.
TXINH_IN_A (I)
Data Device Corporation
www.ddc-web.com
"Built-In" BALL
Transceivers
R13
J10
K10
J11
K11
L10
M10
L9
M9
H10
H11
T O T A L - A C E X T R E M E ® S I G N A L S
Pullup/
For Use With External Transceivers
Pulldown
"Transceiverless Mode"
50k Pullup If nSINGEND is connected to logic '0', the Manchester
decoder inputs will be configured to accept single-
ended input signals (e.g., MIL-STD-1773 fiber optic
receiver outputs). Refer to paragraph 8.2 for use of the
single-ended input mode to interface with a fiber optic
transceiver.
If nSINGEND is connected to logic '1', the decoder
inputs will be configured to accept standard double-
ended Manchester bi-phase input signals; i.e., MIL-
STD-1553 receiver outputs.
N/A
These two signals MUST be separated for
"Transceiverless" operation.
50k Digital Manchester bi-phase transmit data outputs.
Pulldown Connect directly to corresponding inputs of a MIL-
STD-1553 or MIL-STD-1773 (fiber optic) transceiver.
N/A
These two signals MUST be separated for
"Transceiverless" operation.
50k
Digital Manchester bi-phase transmit data outputs.
Pulldown
Connect directly to corresponding inputs of a MIL-
STD-1553 or MIL-STD-1773 (fiber optic) transceiver.
N/A
These two signals MUST be separated for
"Transceiverless" operation.
50k
Digital Manchester bi-phase transmit data outputs.
Pulldown
Connect directly to corresponding inputs of a MIL-
STD-1553 or MIL-STD-1773 (fiber optic) transceiver.
N/A
These two signals MUST be separated for
"Transceiverless" operation.
Digital Manchester bi-phase transmit data outputs.
50k
Connect directly to corresponding inputs of a MIL-
Pulldown
STD-1553 or MIL-STD-1773 (fiber optic) transceiver.
N/A These two signals MUST be separated for
"Transceiverless" operation.
Transmitter inhibit inputs for Channel A of external
MIL-STD-1553 transmitters. To enable transmission on
Channel A, this input must be connected to logic "0".
50k
To force a shutdown of Channel A, a value of logic "1"
Pulldown
should be applied to the respective TX_INH input.
Digital transmit inhibit outputs. Connect to
TXINH_OUT_A inputs of an external MIL-STD-1553
transceiver. Asserted high to inhibit when not trans-
mitting on the respective bus.
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