MA28139 Datasheet, PDF (2/34 Pages) Dynex Semiconductor – OBDH Bus Terminal

MA28139
APPLICATION
ODBH BUS
CENTRAL TERMINAL
Bus Controller
CT DBI
OBT
UP TO A TOTAL OF 62 TERMINALS
OBT
IUB
DMUX
MPX
DMUX
ADC
Commands
Timing
Address
Digital
Data
Analogue
Data
REMOTE TERMINAL
OBT
DBU
RT DBI
RBI
RAM
µP
I/O
OBT
RT DBI
RBI
RAM
µP
I/O
INTELLIGENT TERMINAL
Figure 2: Application
PAYLOAD INTERFACES
The OBT converts the OBDH bus to an Internal User Bus,
and a Digital Bus Interface. The OBT can connect OBDH to
existing ESA standard payload interfaces such as the MSS
PIU (payload interface unit), ICU (intelligent control unit), SBC
(single board MIL-STD-1750 computer) or FTC (fault tolerant
computer).
The OBT and analogue components/transformers can be
integrated in the PIU, ICU, SBC, etc.
I-Bus
OBDH
R-Bus
ANALOGUE
HYBRID
OR
DISCRETE
CIRCUIT
BT-Bus
IUB
PIU
OBDH
BUS
TERMINAL
MA28139
PAYLOAD
µP
DBI
DMA
RBI
MA28138
AD-BUS
I/O
MEMORY
SBC
Figure 3: Payload Interface
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PAYLOAD