Icepick Registers - Texas Instruments SimpleLink CC2620 Technical Reference Manual

ICEPick

5.3.2 ICEPick Registers

Table 5-6 lists the control and status registers in ICEPick.
Register
Data Shift Register
Instruction Register
Bypass Register
Device Identification Register
User Code Register
ICEPick Identification
Connect
Secondary Debug TAP Register
(SDTR)
Secondary Test TAP Register
(STTR)
Reserved
Linking Mode
ICEPick Control
5.3.2.1 IR Instructions
The ICEPick TAP supports the instructions listed in
default to the bypass register. Several instructions are reserved for extensions to the ICEPick opcodes.
Refer to for device identification register descriptions.
IR
000000, 111111
10
100
101
111
1000
000001, 000011,
000110,
001001–111110
400
JTAG Interface
Table 5-6. Register Summary
Abbreviation Width
DSR 32
IR 6
Bypass 1
TAPID 32
UC 32
IPID 32
Connect 7
SDTR 24
STTR 24
SUTR 24
LMR 24
IPCR 24
Table
Table 5-7. Instruction Register Opcodes
ICEPick Instruction
BYPASS
ROUTER
IDCODE
ICEPICKCODE
CONNECT
USERCODE
Reserved
Copyright © 2015, Texas Instruments Incorporated
Number Description
1 TAP Data Register
1 TAP Instruction Register
1 Used by the BYPASS instruction
1 Device ID used with IDCODE
1 User Code used with USERCODE
1 Version of ICEPick
1 Connect code
One register exists for each debug
TAP instantiated. It is used to control
1
selection, power, reset, and the clock
associated with each TAP.
One register exists for each test TAP
6 instantiated. It is used to control
selection of each TAP.
1 Reserved
Specifies how ICEPick manages the
1
TAP selection.
1 General ICEPick control
5-7. All unused TAP controller instructions
Access
Always-open
Connected
Always-open
Always-open
Always-open
Always-open
Reserved
SWCU117C – February 2015 – Revised September 2015
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