dsp56852 Freescale Semiconductor, Inc, dsp56852 Datasheet - Page 34

• Manufacturer Part Number: dsp56852
• Description: 56800e 16-bit Digital Signal Controllers Digital Signal Controller
• Manufacturer: Freescale Semiconductor, Inc

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SRFS (wl) output
STFS (wl) output
SRFS (bl) output
STFS (bl) output
2. Max clock frequency is IP_clk/4 = 60MHz / 4 = 15MHz for a 120MHz part.
3. All the timings for the SSI are given for a non-inverted serial clock polarity (TSCKP=0 in SCR2 and RSCKP=0 in SCSR)
and a non-inverted frame sync (TFSI=0 in SCR2 and RFSI=0 in SCSR). If the polarity of the clock and/or the frame sync has
been inverted, all the timings remain valid by inverting the clock signal STCK/SRCK and/or the frame sync STFS/SRFS in the
tables and in the figures.
4. bl = bit length; wl = word length
SRCK output
STCK output
SRXD
STXD
t
t
TXVM
SCKH
Figure 4-22 Master Mode Timing Diagram
t
t
t
t
RFSBHM
RFSWHM
SM
TFSWHM
t
TXEM
t
t
TFSBHM
SCKW
t
SCKL
First Bit
56852 Technical Data, Rev. 8
t
HM
t
t
TFSBLM
RFBLM
t
t
TSM
TXNVM
t
THM
Last Bit
Freescale Semiconductor
t
t
TFSWLM
RFSWLM
t
TXHIM