act7006 Aeroflex Circuit Technology, act7006 Datasheet - Page 15

• Manufacturer Part Number: act7006
• Description: Act7005/7006 Single Package Solution Dual Transceiver, Protocol, Subsystem
• Manufacturer: Aeroflex Circuit Technology

Bit
Aeroflex Circuit Technology
10
11
12
13
14
15
7
8
9
Name
Normal/RT-RT
SERV REQ/
Transaction/
Bus Select
Auto-Retry
Auto-Retry
Auto-Retry
BUSY BIT
DBCACC/
Other Bus
LT Local
RT/BC
SERR
(MSB)
(LSB)
Test
Table 7 – Operational Register (continued)
Function
Remote Terminal/Bus Controller Bit. This line, when set HIGH, causes the hybrid
to function as a Remote Terminal. When set LOW, it will function as a Bus
Controller. Master Reset sets this bit HIGH
Transaction/Test Mode Bit. When this bit is set high, normal transactions will be
handled, eg., BC to RT, RT to BC, RT to RT. If this bit is set low and a trigger
transaction is issued, the self-test will be performed for the MIL-STD-1553
protocol chip.
Loop Test Local Bit (Used in conjunction with BIT 9). This signal selects the self
test path. When set LOW, the internal digital path is selected. When set HIGH,
the external path, including transceivers, is selected.
Bus Select (Bus Controller Only). When set high, Bus 1 is selected. When set
LOW, Bus 0 is selected.
Normal/Remote Terminal-Remote Terminal Bit. When set HIGH, BC to RT and
RT to BC transfers are performed. When set LOW RT to RT transfers are
performed. Two command words are required and two returned status words will
be expected.
Service Request/Auto-Retry (LSB) Bit.
Subsystem Error/Auto-Retry (MSB) Bit.
Dynamic Bus Control Accept/Auto-Retry Bus Bit.
RTU BUSY
HIGH- BUSY
LOW - NOT BUSY
MASTER RESET SETS BIT HIGH
RT MODE:
BC MODE: This is the MSB of the Auto-Retry option
RT MODE: A LOW in this bit will cause the service request
BC MODE: This is the LSB of the Auto-Retry options. See
RT MODE: This bit should be LOW if the subsystem is able to accept
BC MODE: This bit should be HIGH if an invalid transfer is to be
Options selected:
Bit 14
0
0
1
1
A LOW in this bit will cause a Subsystem Error
bit in the status word to be set.
table on this page, Bit 14
Bit in the status word to be set.
control of the bus, if offered.
above.
retried according to the selected auto-retry option listed
Bit 13
AUTO-RETRY OPERATIONS
0
1
0
1
15
No Retry
P/P/P
Auto-Retry Other Bus
P/P
P
0
SCD7005 REV B 8/2/01
Bit 15
No Retry
P/S/S
P/S
S
1
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