HD64F2145 Datasheet, PDF (552/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

R/W
Bit Bit Name Initial Value Slave Host Description
6 CLKREQ 0
R
— LCLK Request
Indicates that the host interface’s SERIRQ output is
requesting a restart of LCLK.
0: No LCLK restart request
[Clearing conditions]
• LPC hardware reset or LPC software reset
• LPC hardware shutdown or LPC software
shutdown
• SERIRQ is set to continuous mode
• There are no further interrupts for transfer to the
host in quiet mode
1: LCLK restart request issued
[Setting condition]
• In quiet mode, SERIRQ interrupt output
becomes necessary while LCLK is stopped
5 IRQBSY 0
R
— SERIRQ Busy
Indicates that the host interface’s SERIRQ signal is
engaged in transfer processing.
0: SERIRQ transfer frame wait state
[Clearing conditions]
• LPC hardware reset or LPC software reset
• LPC hardware shutdown or LPC software
shutdown
• End of SERIRQ transfer frame
1: SERIRQ transfer processing in progress
[Setting condition]
• Start of SERIRQ transfer frame
Rev. 2.0, 08/02, page 512 of 788