docs/psoc6/quickref.rst: Minor fix in machine.freq args call.

Signed-off-by: enriquezgarc <enriquezgarcia.external@infineon.com>

docs/psoc6/quickref.rst

@@ -42,13 +42,13 @@ The :mod:`machine` module::
 
     import machine
 
-    machine.freq()                          # get the current frequency of the Core M4
-    machine.freq(CM4, freq)                 # set the frequency of the Core M4 sourced by PLL to freq. Value of freq can be upto 150 MHz
-    machine.freq(CM4_FLL, freq)             # set the frequency of the Core M4 sourced by FLL to freq. Value of freq can be upto 48 MHz
-    machine.freq(AUDIO_I2S_98_MHZ)          # set the frequency of the I2S clock to 98 MHz
-    machine.freq(AUDIO_I2S_90_MHZ)          # set the frequency of the I2S clock to 90 MHz
-    machine.freq(AUDIO_PDM_24_576_000_HZ)   # set the frequency of the I2S clock to 24576000 HZ
-    machine.freq(AUDIO_PDM_22_579_200_HZ)   # set the frequency of the I2S clock to 22579200 HZ
+    machine.freq()                                  # get the current frequency of the Core M4
+    machine.freq(machine.CM4, freq)                 # set the frequency of the Core M4 sourced by PLL to freq. Value of freq can be upto 150 MHz
+    machine.freq(machine.CM4_FLL, freq)             # set the frequency of the Core M4 sourced by FLL to freq. Value of freq can be upto 48 MHz
+    machine.freq(machine.AUDIO_I2S_98_MHZ)          # set the frequency of the I2S clock to 98 MHz
+    machine.freq(machine.AUDIO_I2S_90_MHZ)          # set the frequency of the I2S clock to 90 MHz
+    machine.freq(machine.AUDIO_PDM_24_576_000_HZ)   # set the frequency of the I2S clock to 24576000 HZ
+    machine.freq(machine.AUDIO_PDM_22_579_200_HZ)   # set the frequency of the I2S clock to 22579200 HZ
 
 Delay and timing
 ----------------
@@ -558,8 +558,8 @@ Before using the I2S bus, the I2S clock frequency needs to be set. The I2S clock
 
 ::
 
-    machine.freq(AUDIO_I2S_98_MHZ) # set the frequency of the I2S clock to 98 MHz. For sample rates: 8KHz / 16 KHz / 32 KHz / 48 KHz 
-    machine.freq(AUDIO_I2S_90_MHZ) # set the frequency of the I2S clock to 90 MHz. For sample rates: 22.05 KHz / 44.1 KHz 
+    machine.freq(machine.AUDIO_I2S_98_MHZ) # set the frequency of the I2S clock to 98 MHz. For sample rates: 8KHz / 16 KHz / 32 KHz / 48 KHz 
+    machine.freq(machine.AUDIO_I2S_90_MHZ) # set the frequency of the I2S clock to 90 MHz. For sample rates: 22.05 KHz / 44.1 KHz 
 
 Constructor
 ^^^^^^^^^^^^
@@ -581,15 +581,15 @@ Constructor
 
 ::
 
-    from machine import I2S, Pin
+    from machine import I2S, Pin, AUDIO_I2S_90_MHZ
     import array
+    
     buf=bytearray(10) #Initialise buffer with required values for transmission & as empty buffer for reception
     machine.freq(AUDIO_I2S_90_MHZ) #set the frequency of the I2S clock to 90 MHz.
 
     audio_out = I2S(0, sck="P13_1", ws="P13_2", sd="P13_3", mode=I2S.TX, bits=16, format=I2S.STEREO, rate=22050, ibuf=20000) #create I2S object
     num_written = audio_out.write(buf) # write buffer of audio samples to I2S device 
     
-
     audio_in = I2S(0, sck="P5_4", ws="P5_5", sd="P5_6", mode=I2S.RX, bits=16, format=I2S.STEREO, rate=22050, ibuf=20000) # create I2S object
     num_read = audio_in.readinto(buf)# fill buffer with audio samples from I2S device
 
@@ -609,14 +609,13 @@ Before using the PDM-PCM bus, the clock frequency needs to be set. The PDM-PCM c
 
 ::
 
-    machine.freq(AUDIO_PDM_24_576_000_HZ) # set the frequency of the clock to 24.576 MHz. For sample rates:  8 / 16 / 48 kHz 
-    machine.freq(AUDIO_PDM_22_579_000_HZ) # set the frequency of the clock to 22.579 MHz. For sample rates: 22.05 / 44.1 KHz 
+    machine.freq(machine.AUDIO_PDM_24_576_000_HZ) # set the frequency of the clock to 24.576 MHz. For sample rates:  8 / 16 / 48 kHz 
+    machine.freq(machine.AUDIO_PDM_22_579_000_HZ) # set the frequency of the clock to 22.579 MHz. For sample rates: 22.05 / 44.1 KHz 
 
 
 PDM-PCM objects can be created and initialized using::
 
-    from machine import PDM_PCM
-    from machine import Pin
+    from machine import PDM_PCM, Pin, AUDIO_PDM_24_576_000_HZ
 
     clk_pin = "P10_4"
     data_pin = "P10_5"