參數(shù)資料
型號： MCIMX357DVM5BR2
廠商： Freescale Semiconductor
文件頁數(shù)： 4/147頁
文件大?。?/td> 0K
描述： IC MPU I.MX35 400MAPBGA
標準包裝： 1,000
系列： i.MX35
核心處理器： ARM11
芯體尺寸： 32-位
速度： 532MHz
連通性： 1 線，CAN，EBI/EMI，以太網(wǎng)，I²C，MMC，SPI，SSI，UART/USART，USB OTG
外圍設備： DMA，I²S，LCD，POR，PWM，WDT
輸入/輸出數(shù)： 96
程序存儲器類型： ROMless
RAM 容量： 128K x 8
電壓 - 電源 (Vcc/Vdd)： 1.33 V ~ 1.47 V
振蕩器型： 外部
工作溫度： -20°C ~ 70°C
封裝/外殼： 400-LFBGA
包裝： 帶卷 (TR)
i.MX35 Applications Processors for Industrial and Consumer Products, Rev. 10
Freescale Semiconductor
101
ata_buffer_en is negated, the bus drives from device to host. Steering of the signal is such that contention
on the host and device tri-state buses is always avoided.
4.9.17.3
Timing Parameters
Table 68 shows the parameters used in the timing equations. These parameters depend on the
implementation of the ATA interface on silicon, the bus buffer used, the cable delay, and the cable skew.
Table 68. ATA Timing Parameters
Name
Description
Value/
Contributing Factor1
1 Values provided where applicable.
T
Bus clock period (ipg_clk_ata)
Peripheral clock
frequency
ti_ds
Set-up time ata_data to ata_iordy edge (UDMA-in only)
UDMA0
UDMA1
UDMA2, UDMA3
UDMA4
UDMA5
15 ns
10 ns
7ns
5ns
4ns
ti_dh
Hold time ata_iordy edge to ata_data (UDMA-in only)
UDMA0, UDMA1, UDMA2, UDMA3, UDMA4
UDMA5
5.0 ns
4.6 ns
tco
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
12.0 ns
tsu
Set-up time ata_data to bus clock L-to-H
8.5 ns
tsui
Set-up time ata_iordy to bus clock H-to-L
8.5 ns
thi
Hold time ata_iordy to bus clock H to L
2.5 ns
tskew1 Maximum difference in propagation delay bus clock L-to-H to any of following signals
ata_cs0, ata_cs1, ata_da2, ata_da1, ata_da0, ata_dior, ata_diow, ata_dmack, ata_data
(write), ata_buffer_en
7ns
tskew2 Maximum difference in buffer propagation delay for any of following signals
ata_cs0, ata_cs1, ata_da2, ata_da1, ata_da0, ata_dior, ata_diow, ata_dmack, ata_data
(write), ata_buffer_en
Transceiver
tskew3 Maximum difference in buffer propagation delay for any of following signals ata_iordy,
ata_data (read)
Transceiver
tbuf
Maximum buffer propagation delay
Transceiver
tcable1 Cable propagation delay for ata_data
Cable
tcable2 Cable propagation delay for control signals ata_dior, ata_diow, ata_iordy, ata_dmack
Cable
tskew4 Maximum difference in cable propagation delay between ata_iordy and ata_data (read)
Cable
tskew5 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)
Cable
tskew6 Maximum difference in cable propagation delay without accounting for ground bounce
Cable
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