MC9328MX21VG Freescale, MC9328MX21VG Datasheet - Page 63

• Manufacturer Part Number: MC9328MX21VG
• Manufacturer: Freescale

Specifications of MC9328MX21VG

• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

3.19
The External Interface Module (EIM) handles the interface to devices external to the i.MX21, including
generation of chip-selects for external peripherals and memory. The timing diagram for the EIM is shown
in
Freescale Semiconductor
Figure
53, and
External Interface Module (EIM)
Write Data (negated falling)
Write Data (negated rising)
LBA (negated falling edge)
LBA (negated rising edge)
Burst Clock (falling edge)
Burst Clock (rising edge)
(HCLK) Bus Clock
Table 43
OE (falling edge)
EB (falling edge)
OE (rising edge)
EB (rising edge)
Read (Write)
Chip-select
Read Data
Address
DTACK
defines the parameters of signals.
Figure 53. EIM Bus Timing Diagram
MC9328MX21 Technical Data, Rev. 3.4
1a
2a
3a
6a
6a
4a
5a
7a
9a
9a
4c
5c
7c
10a
8a
6c
7b
7d
10a
4b
5b
11
9c
8b
1b
2b
3b
4d
5d
6b
9b
Specifications
63