mcimx50 Freescale Semiconductor, Inc, mcimx50 Datasheet - Page 54

• Manufacturer Part Number: mcimx50
• Description: I.mx50 Applications Processors For Consumer Products
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
4.6.5.3
4.6.5.3.1
54
1
GPMI’s sync mode output timing could be controlled by module’s internal register, say HW_GPMI_TIMING2_CE_DELAY,
HW_GPMI_TIMING_PREAMBLE_DELAY, and HW_GPMI_TIMING2_POST_DELAY. This AC timing depends on these
registers’ setting. In the above table, we use CE_DELAY/PRE_DELAY/POST_DELAY representing these settings each.
NF24
NF25
NF26
NF27
ID
postamble delay
CLE and ALE setup time
CLE and ALE hold time
Data input to first DQS
latching transition
Samsung Toggle Mode AC Timing
Command and Address Timing
Samsung Toggle Mode command and address timing is the same as ONFI
1.0 compatible Async mode AC timing. Please refer to the above chapter for
details.
Table 38. Source Synchronous Mode Timing Parameters
Parameter
i.MX50 Applications Processors for Consumer Products, Rev. 0
Symbol
tDQSS
tPOST
tCALS
tCALH
NOTE
POST_DELAY*tCK
0.5*tCK
0.5*tCK
Min.
tCK
T = GPMI Clock Cycle
Timing
1
(continued)
Max.
—
—
—
—
Freescale Semiconductor
Unit
ns
ns
ns
ns