IS61DDB42M18A Datasheet, PDF (22/32 Pages) Integrated Silicon Solution, Inc – Synchronous pipeline read with late write operation

IS61DDB42M18A
IS61DDB41M36A
TAP Controller State and Block Diagram
TDI
TMS
TCK
...
Boundary Scan Register (109 bits)
Bypass Register (1 bit)
Identification Register (32 bits)
Instruction Register (3 bits)
Control Signals
TAP Controller
TAP Controller State Machine
1
Test Logic
Reset
0
Run Test 1
Idle
0
Select DR ¹
0
1 Capture
DR
0
Shift DR
0
1
1 _{Exit1 DR}
0
Pause DR ⁰
1
Exit2 DR ⁰
1
Update
DR
1
0
Select IR ¹
0
1 Capture
IR
0
Shift IR
0
1
1 _{Exit1 IR}
0
Pause IR ⁰
1
Exit2 IR ⁰
1
Update IR
1
0
TDO
Integrated Silicon Solution, Inc.- www.issi.com
22
Rev. A
10/02/2014