MCIMX503CVM8B datasheet(94/134 Pages) FREESCALE

94 / 134 page

i.MX50 Applications Processors for Consumer Products, Rev. 2

Freescale Semiconductor

Electrical Characteristics

NOTE

•

All the timings for the SSI are given for a non-inverted serial clock

polarity (TSCKP/RSCKP = 0) and a non-inverted frame sync

(TFSI/RFSI = 0). If the polarity of the clock and/or the frame sync have

been inverted, all the timing remains valid by inverting the clock signal

STCK/SRCK and/or the frame sync STFS/SRFS shown in both the

tables and figures.

•

All timings are on Audiomux Pads when SSI is being used for data

transfer.

•

Tx and Rx refer to the transmit and receive sections of the SSI.

•

The terms WL and BL refer to word length (WL) and bit length (BL).

•

For internal frame sync operation using external clock, the FS timing is

same as that of Tx Data (for example, during AC97 mode of operation).

SS39

(Tx) CK high to STXD high impedance

—

15.0

Synchronous External Clock Operation

SS44

SRXD setup before (Tx) CK falling

10.0

—

SS45

SRXD hold after (Tx) CK falling

2.0

—

SS46

SRXD rise/fall time

—

6.0

Table 67. SSI Transmitter Timing with External Clock (continued)

Parameter

Min

Max

Unit

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