參數(shù)資料
型號: MK40N512VLQ100R
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 100 MHz, RISC MICROCONTROLLER, PQFP144
封裝: 20 X 20 MM, LQFP-144
文件頁數(shù): 58/75頁
文件大?。?/td> 1861K
代理商: MK40N512VLQ100R
6.8.10 I2S switching specifications
This section provides the AC timings for the I2S in master (clocks driven) and slave
modes (clocks input). All timings are given for non-inverted serial clock polarity
(TCR[TSCKP] = 0, RCR[RSCKP] = 0) and a non-inverted frame sync (TCR[TFSI] = 0,
RCR[RFSI] = 0). If the polarity of the clock and/or the frame sync have been inverted, all
the timings remain valid by inverting the clock signal (I2S_BCLK) and/or the frame sync
(I2S_FS) shown in the figures below.
Table 42. I2S master mode timing
Num
Description
Min.
Max.
Unit
Operating voltage
2.7
3.6
V
S1
I2S_MCLK cycle time
2 x tSYS
ns
S2
I2S_MCLK pulse width high/low
45%
55%
MCLK period
S3
I2S_BCLK cycle time
5 x tSYS
ns
S4
I2S_BCLK pulse width high/low
45%
55%
BCLK period
S5
I2S_BCLK to I2S_FS output valid
15
ns
S6
I2S_BCLK to I2S_FS output invalid
-2.5
ns
S7
I2S_BCLK to I2S_TXD valid
15
ns
S8
I2S_BCLK to I2S_TXD invalid
-3
ns
S9
I2S_RXD/I2S_FS input setup before I2S_BCLK
20
ns
S10
I2S_RXD/I2S_FS input hold after I2S_BCLK
0
ns
S1
S2
S3
S4
S5
S9
S7
S9
S10
S7
S8
S6
S10
S8
I2S_MCLK (output)
I2S_BCLK (output)
I2S_FS (output)
I2S_FS (input)
I2S_TXD
I2S_RXD
Figure 27. I2S timing — master mode
Peripheral operating requirements and behaviors
K40 Sub-Family Data Sheet Data Sheet, Rev. 4, 3/2011.
Freescale Semiconductor, Inc.
Preliminary
61
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