CT2512-PCB Aeroflex Circuit Technology, CT2512-PCB Datasheet - Page 5

• Manufacturer Part Number: CT2512-PCB
• Description: Dual Redundant Remote Terminal For Mil-std-1553b In Pcb Style
• Manufacturer: Aeroflex Circuit Technology

Plug-In
Pkg
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
SCDCT2512PCB Rev A
Flat
Pkg
73
71
69
67
65
63
61
59
57
55
53
51
49
47
45
43
11
13
15
3
5
7
9
TXDATAOUT A
RXDATAIN A
DAT/CMD
ILL CMD
Function
HS FAIL
RT FAIL
DTREQ
SS REQ
DTSTR
TEST 2
BITEN
ADBC
NBGT
V
V
DB0
DB2
DB4
DB6
DB8
A10
A8
A6
EE
TERMINAL CONNECTIONS AND PIN FUNCTIONS (con’t)
L
A
A
Handshake fail - Output signal that goes LOW and stays LOW whenever the subsystem
fails to supply DTGRT in time to do a successful transfer. Cleared by the next NBGT.
DATA strobe - A LOW level output pulse (166 ns) present in the middle of every data
word transfer over the parallel data bus. Used to latch or strobe the data into memory,
FIFOs, registers, etc. Recommend using the rising edge to clock data in. (See note 2).
Address line output that is LOW whenever the command word is being transferred to the
subsystem over the parallel data bus, and is HIGH whenever data words are being
transferred.
Remote terminal failure - Latched active LOW output signal to the subsystem to flag
detection of a remote terminal continuous self-test failure. Also set if the watchdog
timeout circuit is activated. Cleared by the start of the next message transmission (status
word) and set if problem is again detected.
Data transfer request - Active LOW output signal to the subsystem indicating that the RT
has data for or needs data from the subsystem and requests a data transfer over the
parallel data bus. Will stay LOW until transfer is completed or transfer until transfer is
completed or transfer timeout has occurred.
Accept dynamic bus control - Active LOW input signal from subsystem used to set the
dynamic bus control acceptance bit in the status register if the command word was a
valid, legal mode command for dynamic bus control.
Factory test point - DO NOT USE. (See note 3).
Latched output of the T/R bit in the command word.
Illegal command - Active LOW input signal from the subsystem, strobed in on the rising
edge of INCMD. Used to define the command word as illegal and to set the message
error bit in the status register.
Subsystem service request - Input from the subsystem used to control the service request
bit in the status register. If LOW when the status word is updated, the service request bit
will be set; if HIGH, it will be cleared.
Built-in-test word enable - LOW level output pulse (500 ns), present when the
built-in-test word is enabled on the parallel data bus. (See note 4).
the A channel of the 1553 bus.
+5 Volt input power supply connection for the A channel transceiver.
-12 / -15 Volt input power supply connection for the A channel transceiver. (See note 7).
HIGH output to the primary side of the coupling transformer that connects to the A
channel of the 1553 bus.
New bus grant - LOW level output pulse (166 ns) used to indicate the start of a new
protocol sequence in response to the command word just received. (See note 2).
Latched output of the 2nd MSB in the subaddress field of the command word.
Latched output of the 2nd LSB in the subaddress field of the command word.
Bidirectional parallel data bus bit 0 (LSB).
Bidirectional parallel data bus bit 2.
Bidirectional parallel data bus bit 4.
Bidirectional parallel data bus bit 6.
Bidirectional parallel data bus bit 8.
Input from the LOW side of the primary side of the coupling transformer that connects to
Description
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