DS3170 Maxim Integrated Products, DS3170 Datasheet - Page 207

• Manufacturer Part Number: DS3170
• Description: Network Controller & Processor ICs DS3-E3 Single-Chip T ransceiver T3-E3 Fra
• Manufacturer: Maxim Integrated Products

13.5 JTAG Functional Timing
This functional timing for the JTAG circuits shows:
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Figure 13-3. JTAG Functional Timing
13.6 IO Pins
All input, output, and inout pins are inout pins in JTAG mode.
(STATE)
JTRST
Output
JTCLK
(INST)
JTDO
JTMS
The JTAG controller starting from reset state
Shifting out the first 4 LSB bits of the IDCODE
Shifting in the BYPASS instruction (111) while shifting out the mandatory X01 pattern
Shifting the TDI pin to the TDO pin through the bypass shift register
An asynchronous reset occurs while shifting
JTDI
Pin
Reset
X
Run Test
Idle
Select DR
Scan
Capture
DR
IDCODE
Shift
DR
X
Exit1
DR
207 of 230
Update
DR
Output pin level change if in "EXTEST" instruction mode
Select DR
Scan
Select IR
Scan
Capture
IR
Shift IR
DS3170 DS3/E3 Single-Chip Transceiver
X
Exit1
IR
Update
IR
X
Select DR
Scan
Capture
DR
BYPASS
Shift
DR
Logic Idle
X
IDCODE
X
Test