參數(shù)資料
型號(hào): MC9328MXSCVP10R2
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 100 MHz, MICROPROCESSOR, PBGA225
封裝: 13 X 13 MM, ROHS COMPLIANT, PLASTIC, MAPBGA-225
文件頁(yè)數(shù): 3/68頁(yè)
文件大?。?/td> 1335K
代理商: MC9328MXSCVP10R2
Functional Description and Application Information
MC9328MXS Technical Data, Rev. 2
Freescale Semiconductor
11
4
Functional Description and Application Information
This section provides the electrical information including and timing diagrams for the individual modules
of the i.MXS.
4.1
Embedded Trace Macrocell
All registers in the ETM9 are programmed through a JTAG interface. The interface is an extension of the
ARM920T processor’s TAP controller, and is assigned scan chain 6. The scan chain consists of a 40-bit
shift register comprised of the following:
32-bit data field
7-bit address field
A read/write bit
The data to be written is scanned into the 32-bit data field, the address of the register into the 7-bit address
field, and a 1 into the read/write bit.
A register is read by scanning its address into the address field and a 0 into the read/write bit. The 32-bit
data field is ignored. A read or a write takes place when the TAP controller enters the UPDATE-DR state.
The timing diagram for the ETM9 is shown in Figure 2. See Table 8 for the ETM9 timing parameters used
Table 6. Tristate Signal Timing
Pin
Parameter
Minimum
Maximum
Unit
TRISTATE
Time from TRISTATE activate until I/O becomes Hi-Z
20.8
ns
Table 7. 32k/16M Oscillator Signal Timing
Parameter
Minimum
RMS
Maximum
Unit
EXTAL32k input jitter (peak to peak)
5
20
ns
EXTAL32k startup time
800
ms
EXTAL16M input jitter (peak to peak) 1
1 The 16 MHz oscillator is not recommended for use in new designs.
–TBD
TBD
EXTAL16M startup time 1
TBD
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