参数资料
型号: MSC8144E
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 0-BIT, 150 MHz, OTHER DSP, PBGA783
封装: 29 X 29 MM, LEAD FREE, PLASTIC, FCPBGA-783
文件页数: 60/80页
文件大小: 2284K
代理商: MSC8144E
MSC8144E Quad Core Digital Signal Processor Data Sheet, Rev. 0
Freescale Semiconductor
63
2.7.14
EE Signals
Figure 39 shows the signal behavior of the EE pins.
2.7.14.1
JTAG Signals
Figure 40 Shows the Test Clock Input Timing Diagram
Table 55. EE Pin Timing
Characteristics
Symbol
Type
Min
EE (input)
tEEIN
Asynchronous
4 core clock periods
EE (output)
tEEOUT
Synchronous to Core clock
1 core clock period
Notes:
1.
The ratio between the core clock and CLKOUT is configured during power-on-reset.
2.
Refer to Table 1-4 on page 1-6 for details on EE pin functionality.
Figure 39. EE Pin Timing
Table 56. JTAG Timing
Characteristics
Symbol
All frequencies
Unit
Min
Max
TCK cycle time
tTCKX
33.0
ns
TCK clock high phase measured at VM = 1.6 V
tTCKH
13.0
ns
TCK rise and fall times
tTCKR
—3.0
ns
Boundary scan input data set-up time
tBSVKH
0.0
ns
Boundary scan input data hold time
tBSXKH
10.0
ns
TCK fall to output data valid
tTCKHOV
20.0
ns
TCK fall to output high impedance
tTCKHOZ
24.0
ns
TMS, TDI data set-up time
tTDIVKH
0.0
ns
TMS, TDI data hold time
tTDIXKH
5.0
ns
TCK fall to TDO data valid
tTDOHOV
10.0
ns
TCK fall to TDO high impedance
tTDOHOZ
12.0
ns
TRST assert time
tTRST
100.0
ns
Note:
All timings apply to OnCE module data transfers as well as any other transfers via the JTAG port.
Figure 40. Test Clock Input Timing
EE out
EE in
tEEIN
tEEOUT
TCK
(Input)
VM
tTCKX
tTCKH
tTCKR
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