mc94mx21 Freescale Semiconductor, Inc, mc94mx21 Datasheet - Page 54

• Manufacturer Part Number: mc94mx21
• Description: 333 And 350 Mhz
• Manufacturer: Freescale Semiconductor, Inc

Specifications
1. All the timings for the SSI are given for a non-inverted serial clock polarity (TSCKP/RSCKP = 0) and a non-inverted frame sync
54
Ref
No.
27a
27b
Ref
No.
(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 the tables and in the figures.
10
20
21
22
23
24
25
26
28
29
30
31
32
33
34
1
2
3
4
5
6
7
8
9
(Tx/Rx) CK clock period
(Tx) CK high to FS (bl) high
(Rx) CK high to FS (bl) high
(Tx) CK high to FS (bl) low
(Rx) CK high to FS (bl) low
(Tx) CK high to FS (wl) high
(Rx) CK high to FS (wl) high
(Tx) CK high to FS (wl) low
(Rx) CK high to FS (wl) low
(Tx) CK high to STXD valid from high impedance
(Tx) CK high to FS (bl) low
(Rx) CK high to FS (bl) low
(Tx) CK high to FS (wl) high
(Rx) CK high to FS (wl) high
(Tx) CK high to FS (wl) low
(Rx) CK high to FS (wl) low
(Tx) CK high to STXD valid from high impedance
(Tx) CK high to STXD high
(Tx) CK high to STXD low
(Tx) CK high to STXD high impedance
SRXD setup time before (Rx) CK low
SRXD hole time after (Rx) CK low
SRXD setup before (Tx) CK falling
SRXD hold after (Tx) CK falling
SRXD setup before (Tx) CK falling
SRXD hold after (Tx) CK falling
Table 34. SSI to SSI1 Ports Timing Parameters (Continued)
Parameter
Parameter
1
Synchronous External Clock Operation (SSI1 Ports)
Table 35. SSI to SSI2 Ports Timing Parameters
Synchronous Internal Clock Operation (SSI1 Ports)
Internal Clock Operation
MC94MX21 Technical Data, Rev. 1.4
Minimum
Minimum
10.22
10.79
10.22
10.79
10.22
10.79
10.05
10.00
10.00
10.05
19.90
90.91
-0.21
-0.21
-0.21
-0.21
0.78
2.59
0.01
0.01
0.01
0.01
0.34
0
0
0
1
1.8 V ± 0.1 V
1.8 V ± 0.1 V
(SSI2 Ports)
Maximum
Maximum
17.63
19.67
17.63
19.67
17.63
19.67
15.75
15.63
15.63
15.75
0.15
0.05
0.15
0.05
0.15
0.05
0.15
0.05
0.72
–
–
–
–
–
–
–
Minimum
Minimum
19.90
90.91
-0.21
-0.21
-0.21
-0.21
8.82
9.39
8.82
9.39
8.82
9.39
8.66
8.61
8.61
8.66
0.47
2.28
0.01
0.01
0.01
0.01
0.34
0
0
0
3.0 V ± 0.3 V
3.0 V ± 0.3 V
Freescale Semiconductor
Maximum
Maximum
16.24
18.28
16.24
18.28
16.24
18.28
14.36
14.24
14.24
14.36
0.15
0.05
0.15
0.05
0.15
0.05
0.15
0.05
0.72
–
–
–
–
–
–
–
Unit
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns