SH7144_08 Datasheet, PDF (760/930 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series

23. Advanced User Debugger (AUD)
23.5.4 Pin States
1. Module standby
AUDMD
Z
AUDCK
Z
AUDSYNC Z
AUDATA Z
2. AUDRST = low-level input
AUDMD
Input
AUDCK
(1) AUDMD = high: Input
(2) AUDMD = low: High-level Output
AUDSYNC (1) AUDMD = high: Input
(2) AUDMD = low: High-level Output
AUDRST
Low-level input
AUDATA (1) AUDMD = high: Input
(2) AUDMD = low: High-level Output
3. Normal operation/software standby
AUDRST = 1
AUDMD
Input
AUDCK
AUDSYNC
AUDRST
(1) AUDMD = high: Input
(1) AUDMD = high: Input
High-level input
(2) AUDMD = low: Output
(2) AUDMD = low: Output
AUDATA (1) AUDMD = high: Input/Output (2) AUDMD = low: Output
23.5.5 AUD Start-up Sequence
Follow the sequence described below to start up the AUD.
After selecting the AUD pin by the PFC, input at least three clocks to the AUDCK pin while
retaining the AUDRST pin at low level. Then, set the AUD reset bit (AUDSRST) in SYSCR to
clear the AUD reset. Low level input to the AUDRST pin and clock input to the AUDCK pin can
be started prior to the selection of the AUD pin by the PFC.
23.5.6 RAM Monitor Operation Using the PD22/AUDCK Pin
While using the PD22/AUDCK pin for RAM monitor function, the PE3/AUDATA3,
PE4/AUDATA2, PE5/AUDATA1, PE6/AUDATA0, and PA16/AUDSYNC pins are not
available. Instead of those unavailable pins, the PD19/AUDATA3, PD18/AUDATA2,
PD17/AUDATA1, PD16/AUDATA0 and PD23/AUDSYNC pins must be used.
Rev.4.00 Mar. 27, 2008 Page 716 of 882
REJ09B0108-0400