CT1611 Datasheet, PDF (14/24 Pages) Aeroflex Circuit Technology – DMA Controller with Buffer Memory,MIL-STD-1750A Compatible

RTU Interrupt Name
Valid Message Received
SYNC With Data
Mode W/O Data
Data Transmitted
Interrupts in RTU Mode
Signal Name
Conditions and Actions
INT 0
1. Indicates the reception of a complete and valid block of data.
2. Interrupt issued after complete block of data has been DMA'd to
subsystem memory.
3. Command word for receive data block is located in double
buffered receive command register.
INT 1
INT 2
1. Issued after reception of valid SYNCHRONIZE with data mode
command. (Interrupt is not generated if word count is high).
2. Command word located in command register.
3. SYNC data word located in SW2/RMD register.
1. Indicates reception of mode commands without data that may
require subsystem action. These are:
SYNCHRONIZE (W/O DATA)
RESET
DYNAMIC BUS CONTROL ACCEPTANCE
2. Command word located in command register.
INT 3
1. Indicates reception of valid transmit command or vector mode
command.
2. If issued for transmit command,then issued after DMA.
3. If issued for vector, data transmitted from CW2/AMD/VEC
register.
4. Command word located in command register.
Bus Controller Poll Operation
Internal Triggers
Trig A
Trig B
continues operation
conditions - transaction
-poll op enabled
-BC mode
begin again (from offset)
conditions - transaction = last (TB6 = 0)
- poll op enable
- BC mode
- valid trans interrupt
Op Code
XX24
XX20
SCDCT1611 Rev A
14