參數(shù)資料
型號: MCIMX258CVM4
廠商: Freescale Semiconductor
文件頁數(shù): 8/153頁
文件大小: 0K
描述: IC MPU I.MX25 IND 400MAPBGA
標準包裝: 90
系列: i.MX25
核心處理器: ARM9
芯體尺寸: 32-位
速度: 400MHz
連通性: 1 線,CAN,EBI/EMI,以太網(wǎng),I²C,MMC,智能卡,SPI,SSI,UART/USART,USB OTG
外圍設(shè)備: DMA,I²S,LCD,POR,PWM,WDT
輸入/輸出數(shù): 128
程序存儲器類型: 外部程序存儲器
RAM 容量: 144K x 8
電壓 - 電源 (Vcc/Vdd): 1.15 V ~ 1.52 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 3x12b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 400-LFBGA
包裝: 托盤
i.MX25 Applications Processor for Consumer and Industrial Products, Rev. 10
Freescale Semiconductor
105
Note:
All the timings for the SSI are given for a non-inverted serial clock polarity (TSCKP/RSCKP = 0) and a non-inverted frame sync
(TFSI/RFSI = 0). If the polarity of the clock and/or the frame sync have been inverted, all the timing remains valid by inverting
the clock signal STCK/SRCK and/or the frame sync STFS/SRFS shown in the tables and in the figures.
All timings are on pads when SSI is being used for a data transfer.
”Tx” and “Rx” refer, respectively, to the transmit and receive sections of the SSI.
For internal frame sync operation using external clock, the FS timing is the same as that of Tx data (for example, during AC97
mode of operation).
Table 81. SSI Transmitter Timing with Internal Clock
ID
Parameter
Min.
Max.
Unit
Internal Clock Operation
SS1
(Tx/Rx) CK clock period
81.4
ns
SS2
(Tx/Rx) CK clock high period
36.0
ns
SS3
(Tx/Rx) CK clock rise time
6.0
ns
SS4
(Tx/Rx) CK clock low period
36.0
ns
SS5
(Tx/Rx) CK clock fall time
6.0
ns
SS6
(Tx) CK high to FS (bl) high
15.0
ns
SS8
(Tx) CK high to FS (bl) low
15.0
ns
SS10
(Tx) CK high to FS (wl) high
15.0
ns
SS12
(Tx) CK high to FS (wl) low
15.0
ns
SS14
(Tx/Rx) internal FS rise time
6.0
ns
SS15
(Tx/Rx) internal FS fall time
6.0
ns
SS16
(Tx) CK high to STXD valid from high impedance
15.0
ns
SS17
(Tx) CK high to STXD high/low
15.0
ns
SS18
(Tx) CK high to STXD high impedance
15.0
ns
SS19
STXD rise/fall time
6.0
ns
Synchronous Internal Clock Operation
SS42
SRXD setup before (Tx) CK falling
10.0
ns
SS43
SRXD hold after (Tx) CK falling
0.0
ns
SS52
Loading
25.0
pf
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