參數(shù)資料
型號: DS33Z11
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: Ethernet Mapper
中文描述: DATACOM, NETWORK INTERFACE SUPPORT CIRCUIT, PBGA169
封裝: 14 X 14 MM, 1 MM PITCH, CSBGA-169
文件頁數(shù): 163/169頁
文件大?。?/td> 1049K
代理商: DS33Z11
DS33Z11 Ethernet Mapper
Figure 12-2 TAP Controller State Diagram
163 of 169
12.2 Instruction Register
The instruction register contains a shift register as well as a latched parallel output and is 3 bits in length. When
the TAP controller enters the Shift-IR state, the instruction shift register is connected between JTDI and JTDO.
While in the Shift-IR state, a rising edge on JTCLK with JTMS LOW will shift the data one stage towards the serial
output at JTDO. A rising edge on JTCLK in the Exit1-IR state or the Exit2-IR state with JTMS HIGH will move the
controller to the Update-IR state. The falling edge of that same JTCLK will latch the data in the instruction shift
register to the instruction parallel output. Instructions supported by the DS33Z11 and its respective operational
binary codes are shown in
Table 12-1
.
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
1
0
0
0
0
1
1
0
0
0
0
Select
DR-Scan
Capture DR
Shift DR
Exit DR
Pause DR
Exit2 DR
Update DR
Select
IR-Scan
Capture IR
Shift IR
Exit IR
Pause IR
Exit2 IR
Update IR
Test Logic
Reset
Run Test/
Idle
0
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