I.MX27 Datasheet, PDF (89/148 Pages) Freescale Semiconductor, Inc – Multimedia Applications Processor

Electrical Characteristics
SS23
SS22
SS26
SS25
SS24
DAM1_T_CLK
(Input)
SS27
DAM1_T_FS (bl)
(Input)
DAM1_T_FS (wl)
(Input)
DAM1_TXD
(Output)
SS29
SS31
SS37
DAM1_RXD
(Input)
SS44
Note: SRXD Input in Synchronous mode only
SS38
SS45
SS33
SS39
SS46
Figure 50. SSI Transmitter with External Clock Timing Diagram
Table 48. SSI Transmitter with External Clock Timing Parameters
ID
Parameter
Min
Max
Unit
External Clock Operation
SS22 (Tx/Rx) CK clock period
81.4
SS23 (Tx/Rx) CK clock high period
36.0
SS24 (Tx/Rx) CK clock rise time
—
SS25 (Tx/Rx) CK clock low period
36.0
SS26 (Tx/Rx) CK clock fall time
SS27 (Tx) CK high to FS (bl) high
—
–10.0
SS29 (Tx) CK high to FS (bl) low
10.0
SS31 (Tx) CK high to FS (wl) high
SS33 (Tx) CK high to FS (wl) low
–10.0
10.0
SS37 (Tx) CK high to STXD valid from high impedance
—
SS38 (Tx) CK high to STXD high/low
—
SS39 (Tx) CK high to STXD high impedance
—
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
—
—
ns
—
ns
6.0
ns
—
ns
6.0
ns
15.0
ns
—
ns
15.0
ns
—
ns
15.0
ns
15.0
ns
15.0
ns
—
ns
—
ns
6.0
ns
i.MX27 and i.MX27L Data Sheet, Rev. 1.5
Freescale Semiconductor
89