CT1611 Datasheet, PDF (8/24 Pages) Aeroflex Circuit Technology – DMA Controller with Buffer Memory,MIL-STD-1750A Compatible

R/W
(From UP System)
ADDRESS
(From UP System)
DEVICE SELECT
(From UP System)
STRBD
(From up System)
RDYD
(From DMA Controller)
TRISTATE
40ns MIN
DATA
(From DMA Controller)
100ns MAX
ADDRESS VALID
200ns to 400ns
TRISTATE
60ns MAX (Note 1)
100ns MIN (Note 2)
VALID
ACK
(From DMA Controller)
180ns to 375ns
Notes:
1. Requires BOTH STRBD or DEVICE SELECT to be LOW.
2. DATA will be valid 100ns before RDYD goes HIGH, and ACK goes LOW.
TRISTATE
Tristate with Pullup
65ns MAX
TRISTATE
65ns MAX
Tristate with Pullup
I / O READ OPERATION
R/W
(From UP System)
ADDRESS
(From UP System)
TRISTATE
ADDRESS VALID
DEVICE SELECT
(From UP System)
STRBD
(From up System)
RDYD
(From DMA Controller)
DATA
(From UP System)
ACK
(From DMA Controller)
TRISTATE
100ns MAX
200ns to 400ns
60ns MAX (Note 1)
VALID
DATA Latched
180ns to 375ns
Notes:
1. Measured from STRBD or DEVICE SELECT whichever is valid LAST.
RDYD requires the coincidence of STRBD and DEVICE SELECT.
TRISTATE
Tristate with Pullup
TRISTATE
Tristate with Pullup
65ns MAX
I / O WRITE OPERATION
SCDCT1611 Rev A
8