參數(shù)資料
型號: MCIMX258CVM4
廠商: Freescale Semiconductor
文件頁數(shù): 12/153頁
文件大?。?/td> 0K
描述: IC MPU I.MX25 IND 400MAPBGA
標(biāo)準(zhǔn)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
109
3.7.17.4
SSI Receiver Timing with External Clock
Figure 81 shows the timing for SSI receiver with external clock. Table 84 describes the timing parameters
(SS22–SS41) used in the figure.
Figure 81. SSI Receiver with External Clock Timing Diagram
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 data transfer.
Table 84. SSI Receiver Timing with External Clock
ID
Parameter
Min.
Max.
Unit
External Clock Operation
SS22
(Tx/Rx) CK clock period
81.4
ns
SS23
(Tx/Rx) CK clock high period
36.0
ns
SS24
(Tx/Rx) CK clock rise time
6.0
ns
SS25
(Tx/Rx) CK clock low period
36.0
ns
SS26
(Tx/Rx) CK clock fall time
6.0
ns
SS28
FS (bl) low/high setup before (Tx) CK falling
–10.0
15.0
ns
SS30
FS (bl) low/high setup before (Tx) CK falling
10.0
ns
SS32
FS (wl) low/high setup before (Tx) CK falling
–10.0
15.0
ns
SS34
FS (wl) low/high setup before (Tx) CK falling
10.0
ns
SS35
(Tx/Rx) External FS rise time
6.0
ns
SS36
(Tx/Rx) External FS fall time
6.0
ns
SS40
SRXD setup time before (Rx) CK low
10.0
ns
SS41
SRXD hold time after (Rx) CK low
2.0
ns
SS24
SS35
SS30
SS26
SS25
SS23
AUDn_TXC
AUDn_TXFS (bl)
AUDn_TXFS (wl)
AUDn_RXD
SS40
SS22
SS32
SS36
SS41
(Input)
SS28
SS34
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