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參數(shù)資料
| 型號(hào)： | UTI760A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | UTI760A RTS Remote Terminal for Stores |
| 中文描述： | UTI760A轉(zhuǎn)運(yùn)站遠(yuǎn)程終端為商店 |
| 文件頁數(shù)： | 3/48頁 |
| 文件大小： | 928K |
| 代理商： | UTI760A |
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RTS-3
1.0 A
RCHITECTURE
A
ND
O
PERATION
The UT1760A RTS is an interface device linking a MIL-
STD-1553 serial data bus and a host microprocessor system.
The RTS’s MIL-STD-1553B interface includes encoding/
decoding logic, error detection, command recognition, 1K
x 16 of SRAM, pointer registers, clock, and reset circuits.
Illegal subaddress circuitry makes the RTS MIL-STD-
1760A-specific.
1.1 Memory Map and Host Memory Interface
The host can access the 1K x 16 RAM memory like a
standard RAM device through the 10-bit address and 16-bit
data buses. The host uses the Chip Select (CS), Read/Write
(RD/WR), and Output Enable (OE) signals to control data
transfer to and from memory. When the RTS requires access
to its own internal RAM, it asserts the RBUSY signal to
alert the host. The RBUSY signal is programmable via the
internal Control Register to be asserted either 5.7ms or
2.7ms prior to the RTS needing access to its internal RAM.
The RTS stores MIL-STD-1760A messages in 1K x 16 of
on-chip RAM. For efficient use of the 1K x 16 memory on
the RTS, the host programs a set of pointers to map where
the 1760A message is stored. The RTS uses the upper 64
words (address 3C0 (hex) through 3FF (hex)) as pointers.
The RTS provides pointers for all 30 receive subaddresses,
all 30 transmit subaddresses, and four mode code
commands with associated data words as defined in
MIL-STD-1553B. The remaining 960 words of memory
contain receive, transmit, and mode code data in a
host-defined structure.
Figure 2. RTS Memory Map
15 MSB
0 LSB
RTS Memory Map
3C0 (hex)
3C1 (hex)
3DF (hex)
3DE (hex)
RCV SUBADDRESS 01
RCV SUBADDRESS 30
XMIT VECTOR WORD MODE CODE (W/DATA)
SYNCHRONIZE MODE CODE (W/DATA)
15 MSB
0 LSB
3FF (hex)
XMIT LAST COMMAND MODE CODE (W/DATA)
XMT SUBADDRESS 01
XMT BIT WORD MODE CODE (W/DATA)
3E0 (hex)
3E1 (hex)
XMT SUBADDRESS 30
3FE (hex)
15 MSB
0 LSB
000 (hex)
3BF(hex)
Message
Storage
Locations
Receive
Message
Pointers
Transmit
Message
Pointers
(3C1 TO 3DE)
(3E1 TO 3FE)
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