MCIMX25 Motorola Semiconductor Products, MCIMX25 Datasheet - Page 42

• Manufacturer Part Number: MCIMX25
• Manufacturer: Motorola Semiconductor Products

42
tcable1
tcable2
tskew1
tskew2
tskew3
tskew4
tskew5
tskew6
Name
ti_ds
ti_dh
tbuf
tsui
tco
tsu
thi
T
Bus clock period
Set-up time ata_data to ata_iordy edge (UDMA-in only)
Hold time ata_iordy edge to ata_data (UDMA-in only)
Propagation delay bus clock L-to-H to
ata_cs0, ata_cs1, ata_da2, ata_da1, ata_da0, ata_dior, ata_diow, ata_dmack,
ata_data, ata_buffer_en
Set-up time ata_data to bus clock L-to-H
Set-up time ata_iordy to bus clock H-to-L
Hold time ata_iordy to bus clock H-to-L
Maximum difference in propagation delay bus clock L-to-H to any of the
following signals
ata_cs0, ata_cs1, ata_da2, ata_da1, ata_da0, ata_dior, ata_diow,
ata_dmack, ata_data (write), ata_buffer_en
Maximum difference in buffer propagation delay for any of the following signals
ata_cs0, ata_cs1, ata_da2, ata_da1, ata_da0, ata_dior, ata_diow,
ata_dmack, ata_data (write), ata_buffer_en
Maximum difference in buffer propagation delay for any of the following signals
ata_iordy, ata_data (read)
Maximum buffer propagation delay
cable propagation delay for ata_data
cable propagation delay for control signals ata_dior, ata_diow, ata_iordy,
ata_dmack
Maximum difference in cable propagation delay between ata_iordy and
ata_data (read)
Maximum difference in cable propagation delay between (ata_dior, ata_diow,
ata_dmack) and ata_cs0, ata_cs1, ata_da2, ata_da1, ata_da0,
ata_data(write)
Maximum difference in cable propagation delay without accounting for ground
bounce
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 2
Table 31. Timing Parameters
Description
UDMA0,UDMA1,UDMA2,UDMA3,UDMA4
UDMA2,UDMA3
UDMA0
UDMA1
UDMA4
UDMA5
UDMA5
Value/Contributing Factor
Peripheral clock frequency
Freescale Semiconductor
Transceiver
Transceiver
Transceiver
12.0 ns
5.0 ns
4.6 ns
8.5 ns
8.5 ns
2.5 ns
Cable
Cable
Cable
Cable
Cable
15 ns
10 ns
7 ns
5 ns
4 ns
7 ns