MC94MX21 Datasheet, PDF (52/98 Pages) Freescale Semiconductor, Inc – 333 and 350 MHz

Specifications
Table 33. SSI to SAP Ports Timing Parameters
Ref
No.
Parameter
1.8 V ± 0.1 V
3.0 V ± 0.3 V
Unit
Minimum Maximum Minimum Maximum
Internal Clock Operation¹ (SAP Ports)
1 (Tx/Rx) CK clock period¹
90.91
–
2 (Tx) CK high to FS (bl) high
-3.30
-1.16
3 (Rx) CK high to FS (bl) high
-3.93
-1.34
4 (Tx) CK high to FS (bl) low
-3.30
-1.16
5 (Rx) CK high to FS (bl) low
-3.93
-1.34
6 (Tx) CK high to FS (wl) high
-3.30
-1.16
7 (Rx) CK high to FS (wl) high
-3.93
-1.34
8 (Tx) CK high to FS (wl) low
-3.30
-1.16
9 (Rx) CK high to FS (wl) low
-3.93
-1.34
10 (Tx) CK high to STXD valid from high impedance
-2.44
-0.60
11a (Tx) CK high to STXD high
-2.44
-0.60
11b (Tx) CK high to STXD low
-2.44
-0.60
12 (Tx) CK high to STXD high impedance
-2.67
-0.99
13 SRXD setup time before (Rx) CK low
23.68
–
14 SRXD hold time after (Rx) CK low
0
–
90.91
-2.98
-4.18
-2.98
-4.18
-2.98
-4.18
-2.98
-4.18
-2.65
-2.65
-2.65
-2.65
22.09
0
–
ns
-1.10
ns
-1.43
ns
-1.10
ns
-1.43
ns
-1.10
ns
-1.43
ns
-1.10
ns
-1.43
ns
-0.98
ns
-0.98
ns
-0.98
ns
-0.98
ns
–
ns
–
ns
External Clock Operation (SAP Ports)
15 (Tx/Rx) CK clock period¹
90.91
–
16 (Tx/Rx) CK clock high period
36.36
–
17 (Tx/Rx) CK clock low period
36.36
–
18 (Tx) CK high to FS (bl) high
10.24
19.50
19 (Rx) CK high to FS (bl) high
10.89
21.27
20 (Tx) CK high to FS (bl) low
10.24
19.50
21 (Rx) CK high to FS (bl) low
10.89
21.27
22 (Tx) CK high to FS (wl) high
10.24
19.50
23 (Rx) CK high to FS (wl) high
10.89
21.27
24 (Tx) CK high to FS (wl) low
10.24
19.50
25 (Rx) CK high to FS (wl) low
10.89
21.27
26 (Tx) CK high to STXD valid from high impedance
12.08
19.36
27a (Tx) CK high to STXD high
10.80
19.36
27b (Tx) CK high to STXD low
10.80
19.36
28 (Tx) CK high to STXD high impedance
12.08
19.36
29 SRXD setup time before (Rx) CK low
0.37
–
30 SRXD hole time after (Rx) CK low
0
–
90.91
36.36
36.36
7.16
7.63
7.16
7.63
7.16
7.63
7.16
7.63
7.71
7.71
7.71
7.71
0.42
0
–
ns
–
ns
–
ns
8.65
ns
9.12
ns
8.65
ns
9.12
ns
8.65
ns
9.12
ns
8.65
ns
9.12
ns
9.20
ns
9.20
ns
9.20
ns
9.20
ns
–
ns
–
ns
MC94MX21 Technical Data, Rev. 1.4
52
Freescale Semiconductor