FIDO1100PQF208IR1 Innovasic Semiconductor Inc., FIDO1100PQF208IR1 Datasheet - Page 62

• Manufacturer Part Number: FIDO1100PQF208IR1
• Description: 32-bit Real-time Communications Controller
• Manufacturer: Innovasic Semiconductor Inc.

Flexible Input Deterministic Output (fido ® )
32-Bit Real-Time Communications Controller
9.1.3 External Bus Timing for 8-Bit/16-Bit Transfer (without RDY_N)
This timing is programmable via the External Bus Chip Select Control Register (see Figure 22).
The write-enable signal (WE_N) goes inactive (hi) 0–3 clocks (TWER) before the end of
the chip-select time.
All timing is relative to the rising edge of the clock.
The chip-select and byte-enable signals (CSn_N and BEn_N) go active (low) 0–3 clocks
(TCS) after the address bus is driven.
The chip-select and byte-enable signals (CSn_N and BEn_N) go inactive (hi) 0–7 clocks
(THLD) before the address is changed.
The write-cycle timing is controlled by TwWAIT setting (shown as TxWAIT in the
diagram), 1–16 clocks.
The read-cycle timing is controlled by TrWAIT setting (shown as TxWAIT in the
diagram), 1–16 clocks.
Figure 22. External Bus Timing for 8-Bit/16-Bit Transfer (without RDY_N)
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IA211080807-06
November 20, 2009
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