參數(shù)資料
型號(hào)： MK51N256CMD100
廠商： FREESCALE SEMICONDUCTOR INC
元件分類(lèi)： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 100 MHz, RISC MICROCONTROLLER, PBGA144
封裝： 13 X 13 MM, MAPBGA-144
文件頁(yè)數(shù)： 57/74頁(yè)
文件大?。?/td> 1831K
代理商： MK51N256CMD100
6.8.9 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 47. 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 28. I2S timing — master mode
Peripheral operating requirements and behaviors
K51 Sub-Family Data Sheet Data Sheet, Rev. 4, 3/2011.
60
Preliminary
Freescale Semiconductor, Inc.
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