MC9328MX1 Datasheet, PDF (86/96 Pages) Freescale Semiconductor, Inc – i.MX Integrated Portable System Processor

Specifications
Table 40. SSI 1 Timing Parameter Table (Continued)
1.8V +/- 0.10V
3.0V +/- 0.30V
Ref
No.
Parameter
Unit
Minimum Maximum Minimum Maximum
27b STCK high to STXD low
28 STCK high to STXD high impedance
29 SRXD setup time before SRCK low
30 SRXD hole time after SRCK low
9.12
18.24
8.0
18.47
28.5
16.2
1.14
–
1.0
0
–
0
16.0
ns
25.0
ns
–
ns
–
ns
Synchronous Internal Clock Operation (Port C Primary Function)²
31 SRXD setup before STCK falling
32 SRXD hold after STCK falling
15.4
–
13.5
–
ns
0
–
0
–
ns
Synchronous External Clock Operation (Port C Primary Function)²
33 SRXD setup before STCK falling
1.14
–
1.0
–
ns
34 SRXD hold after STCK falling
0
–
0
–
ns
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 (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.
2. There are 2 sets of I/O signals for the SSI module. They are from Port C primary function (PC3 – PC8)
and Port B alternate function (PB14 – PB19). When SSI signals are configured as outputs, they can be
viewed both at Port C primary function and Port B alternate function. When SSI signals are configured as
input, the SSI module selects the input based on status of the FMCR register bits in the Clock controller
module (CRM). By default, the input are selected from Port C primary function.
3. bl = bit length; wl = word length.
Table 41. SSI 2 Timing Parameter Table
1.8V +/- 0.10V
3.0V +/- 0.30V
Ref
No.
Parameter
Unit
Minimum Maximum Minimum Maximum
Internal Clock Operation¹ (Port B Alternate Function)²
1 STCK/SRCK clock period¹
2 STCK high to STFS (bl) high³
3 SRCK high to SRFS (bl) high³
4 STCK high to STFS (bl) low³
5 SRCK high to SRFS (bl) low³
95
–
83.3
1.7
4.8
1.5
-0.1
1.0
-0.1
3.08
5.24
2.7
1.25
2.28
1.1
–
ns
4.2
ns
1.0
ns
4.6
ns
2.0
ns
MC9328MX1 Advance Information, Rev. 4
86
Freescale Semiconductor