MC9328MXS Datasheet, PDF (16/72 Pages) List of Unclassifed Manufacturers – Advance Information

Specifications
3.9 External Interface Module
The External Interface Module (EIM) handles the interface to devices external to the i.MX processor, including the
generation of chip-selects for external peripherals and memory. The timing diagram for the EIM is shown in
Figure 5, and Table 12 on page 16 defines the parameters of signals.
(HCLK) Bus Clock
Address
Chip-select
Read (Write)
OE (rising edge)
OE (falling edge)
EB (rising edge)
EB (falling edge)
LBA (negated falling edge)
LBA (negated rising edge)
BCLK (burst clock) - rising edge
BCLK (burst clock) - falling edge
Read Data
Write Data (negated falling)
Write Data (negated rising)
DTACK_B
1a
2a
3a
4a
4c
5a
5c
6a
6a
7a
7c
9a
9a
10a
1b
2b
3b
4b
4d
5b
5d
6b
6c
7b
7d
8b
8a
9b
9c
10a
Figure 5. EIM Bus Timing Diagram
Table 12. EIM Bus Timing Parameter Table
Ref No.
Parameter
1a
Clock fall to address valid
1b
Clock fall to address invalid
1.8 ± 0.1 V
3.0 ± 0.3 V
Unit
Min Typical Max Min Typical Max
2.48 3.31 9.11 2.4
3.2
8.8 ns
1.55 2.48 5.69 1.5
2.4
5.5 ns
MC9328MXS Advance Information, Rev. 0
16
Freescale Semiconductor