mcf54455 Freescale Semiconductor, Inc, mcf54455 Datasheet - Page 41

• Manufacturer Part Number: mcf54455
• Description: 32-bit Microprocessor With Usb On-the-go, Ethernet, Pci, Ddr2/ddr Controller And Encryption
• Manufacturer: Freescale Semiconductor, Inc

5.19
Freescale Semiconductor
1
Num
JTAG and Boundary Scan Timing
J10
J11
J12
J13
J14
JTAG_EN is expected to be a static signal. Hence, specific timing is not associated with it.
J1
J2
J3
J4
J5
J6
J7
J8
J9
TCLK
(input)
TCLK Frequency of Operation
TCLK Cycle Period
TCLK Clock Pulse Width
TCLK Rise and Fall Times
Boundary Scan Input Data Setup Time to TCLK Rise
Boundary Scan Input Data Hold Time after TCLK Rise
TCLK Low to Boundary Scan Output Data Valid
TCLK Low to Boundary Scan Output High Z
TMS, TDI Input Data Setup Time to TCLK Rise
TMS, TDI Input Data Hold Time after TCLK Rise
TCLK Low to TDO Data Valid
TCLK Low to TDO High Z
TRST Assert Time
TRST Setup Time (Negation) to TCLK High
J4
MCF5445x ColdFire
V
IH
Table 29. JTAG and Boundary Scan Timing
Characteristics
V
IL
Figure 27. Test Clock Input Timing
J3
®
Microprocessor Data Sheet, Rev. 0
1
J4
J2
J3
Min
DC
50
20
20
10
50
10
—
—
—
—
—
5
4
Max
20
30
33
33
11
11
—
—
—
—
—
—
—
3
Electrical Characteristics
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
41