HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 741
HD6417144
Manufacturer Part Number
HD6417144
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417144.pdf
(930 pages)
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22.3.1
The instruction register (SDIR) is a 16-bit register that can be read, but not written to, by the CPU.
H-UDI instructions can be transferred to SDIR from TDI by serial input. SDIR can be initialized
by the TRST signal, but is not initialized in software standby mode.
Instructions transferred to SDIR must be 4 bits in length. If an instruction exceeding 4 bits is input,
the last 4 bits of the serial data will be stored in SDIR.
Bit
15
14
13
12
11 to 0 ⎯
Bit Name
TS3
TS2
TS1
TS0
Instruction Register (SDIR)
Initial value R/W Description
1
1
1
1
All 0
R
R
R
R
R
Test Set Bit
0xxx: setting prohibited
100x: setting prohibited
1010: H-UDI interrupt
1011: setting prohibited
110x: setting prohibited
1110: setting prohibited
1111: BYPASS mode
[Legend]
X:
Reserved
These bits are always read as 0. The write value should
always be 0.
Don’t care
Rev.4.00 Mar. 27, 2008 Page 697 of 882
22. User Debugging Interface (H-UDI)
REJ09B0108-0400
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