M52277EVB Freescale Semiconductor, M52277EVB Datasheet - Page 34

• Manufacturer Part Number: M52277EVB
• Description: BOARD DEMO FOR MCF5227
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r
• Type: MCUr

Specifications of M52277EVB

• Contents: Board
• Silicon Manufacturer: Freescale
• Core Architecture: Coldfire
• Core Sub-architecture: Coldfire V2
• Silicon Core Number: MCF52
• Silicon Family Name: MCF5227x
• Peak Reflow Compatible (260 C): Yes
• Rohs Compliant: Yes
• For Use With/related Products: MCF52277
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Electrical Characteristics
5.12
This section provides the AC timings for the SSI in master (clocks driven) and slave modes (clocks input). All timings are given
for non-inverted serial clock polarity (SSI_TCR[TSCKP] = 0, SSI_RCR[RSCKP] = 0) and a non-inverted frame sync
(SSI_TCR[TFSI] = 0, SSI_RCR[RFSI] = 0). If the polarity of the clock and/or the frame sync have been inverted, all the timings
remain valid by inverting the clock signal (SSI_BCLK) and/or the frame sync (SSI_FS) shown in the figures below.
34
Num
S1
S2
S3
S4
1
P side Impedance
M side Impedance
Impedance Matching P/M
Pulldown Resistance
Rise Time
Fall Time
Rise/Fall Matching
Rise/Fall Matching, DP and DM
TIme Skew Between DP and DM
Rise Time
Fall Time
Rise/Fall Matching
The pulldown resistors are included to provide a method to keep DP and DM signals in a known quiescent state
if desired when the USB port is not being used or when the USB cable is not connected. These on-chip
resistors should not be used to provide the 15-kΩ host-mode pulldowns called for in Chapter 7 of the USB
Specification, Rev. 1.1 or Rev. 2.0.
SSI Timing Specifications
SSI_MCLK cycle time
SSI_MCLK pulse width high / low
SSI_BCLK cycle time
SSI_BCLK pulse width
Characteristic
Characteristic
Characteristic
Table 23. USB On-Chip Transceiver DC Characteristics (continued)
Table 25. USB On-Chip Transceiver Low Speed AC Characteristics
Table 24. USB On-Chip Transceiver Full Speed AC Characteristics
1
MCF5227x ColdFire
Characteristic
Table 26. SSI Timing—Master Modes
Condition
Condition
10–90%
90–10%
10–90%
90–10%
Condition
t
------- -
t
Driven
Driven
—
—
—
LH
HL
®
Microprocessor Data Sheet, Rev. 8
Z
Symbol
t
------- -
t
Matching
LH
HL
t
------- -
t
t
------- -
t
R
LH
HL
LH
HL
Z
Z
PD
M
Symbol
Symbol
P
Pad-to-Pad
Matching
Matching
t
t
SKE
t
t
t
LH
HL
LH
HL
Symbol
t
t
MCLK
BCLK
6.25
6.25
Min
30k
—
4 × 1/f
4 × 1/f
45%
45%
Min
330
100
Min
Min
1
20
75
75
80
7
7
SYS
SYS
8.25
8.25
0.17
Typ
50k
Typ
Typ
360
140
11
11
40
—
—
—
Max
55%
55%
—
—
11.25
11.25
Freescale Semiconductor
Max
0.23
70k
Max
17.5
17.5
Max
640
210
300
300
125
60
t
t
Unit
MCLK
BCLK
ns
ns
Unit
Unit
ns
ns
ps
ps
ps
ns
ns
%
Unit
Ω
Ω
Ω
Ω
Notes
2
3