HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 745

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Serial data
H-UDI interrupt
request
SDTRF
(in SDSR) *
SDSR and SDDR
MUX *
SDDR access
state
Notes: 1. SDTRF flag (in SDSR): Indicates whether SDDR access by the CPU or serial transfer
2
2. SDSR/SDDR (Update-DR state) internal MUX switchover timing
1
data input/output to SDDR is possible.
Conditions: • SDTRF = 1
• Switchover from SDSR to SDDR: On completion of serial transfer in which
• Switchover from SDDR to SDSR: On completion of serial transfer to SDDR
1
0
SDTRF = 1 is output from TDO
Figure 22.2 Data Input/Output Timing Chart (1)
SDDR is shift-enabled. Do not access SDDR until SDTRF = 0.
SDDR is shift-disabled. SDDR access by the CPU is enabled.
Shift
enabled
• SDTRF = 0
— When TRST = 0
— When the CPU writes 1
— In bypass mode
— End of SDDR shift access in serial transfer
Instruc-
tion
Shift
SDSR
SDTRF
1
SDDR
Input
disabled
Rev.4.00 Mar. 27, 2008 Page 701 of 882
CPU
Shift
0
22. User Debugging Interface (H-UDI)
SDSR
SDSR serial transfer
Shift
enabled
1
(monitoring)
Shift
SDDR
output
Input/
REJ09B0108-0400
CPU