Phytec phyFLEX-i.MX 6 - I 2 S Audio Interface (SSI)); Table 22: S Interface Signal Location

Serial Interfaces
 PHYTEC Messtechnik GmbH 2013 L-773e_2
51
8.7 I
2
S Audio Interface (SSI))
The Synchronous Serial Interface (SSI) of the phyFLEX-i.MX 6 is a
full-duplex, serial interface that allows to communicate with a variety
of serial devices, such as standard codecs, digital signal processors
(DSPs), microprocessors, peripherals, and popular industry audio
codecs that implement the inter-IC sound bus standard (I
2
S) and Intel
AC’97 standard. The i.MX 6 provides three instances of the SSI
module. On the phyFLEX-i.MX 6 SSI5 is brought out to the
phyFLEX-Connector.
With reference to the phyFLEX specification, the main purpose of this
interface is to connect to an external codec, such as I
2
S. Four signals
extend from the i.MX 6 SSI module to the phyFLEX-Connector
(I2S0_CLK, I2S0_FRM, I2S0_ADC, I2S0_DAC).
Pin # Signal ST Voltage Domain Description
X1A48 X_I2S0_CLK I/O VDD_3V3_LOGIC I
2
S clock
X1A49 X_I2S0_FRM I/O VDD_3V3_LOGIC I
2
S frame
X1A50 X_I2S0_ADC I VDD_3V3_LOGIC I
2
S receive data
X1A51 reference-voltage REF_O VDD_3V3_LOGIC
I
2
S reference
voltage
X1A53 X_I2S0_DAC O VDD_3V3_LOGIC I
2
S transmit data
Table 22: I
2
S Interface Signal Location
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