h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 421

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

15.3.8
The SIRQCR registers contain status bits that indicate the SERIRQ operating mode and bits that
specify SERIRQ interrupt sources.
• SIRQCR0
Bit
7
6
5
Bit Name
Q/C
SELREQ 0
IEDIR
SERIRQ Control Registers 0 and 1 (SIRQCR0, SIRQCR1)
Initial
Value Slave Host
0
0
R
R/W
R/W
R/W
—
—
—
Description
Quiet/Continuous Mode Flag
Indicates the mode specified by the host at the end of
an SERIRQ transfer cycle (stop frame).
0: Continuous mode
[Clearing conditions]
•
•
1: Quiet mode
[Setting condition]
•
Start Frame Initiation Request Select
Selects whether start frame initiation is requested when
one or more interrupt requests are cleared, or when all
interrupt requests are cleared, in quiet mode.
0: Start frame initiation is requested when all interrupt
1: Start frame initiation is requested when one or more
Interrupt Enable Direct Mode
Specifies whether LPC channel 2 and channel 3
SERIRQ interrupt source (SMI, IRQ6, IRQ9 to IRQ11)
generation is conditional upon OBF, or is controlled only
by the host interrupt enable bit.
0: Host interrupt is requested when host interrupt enable
1: Host interrupt is requested when host interrupt enable
requests are cleared in quiet mode.
interrupt requests are cleared in quiet mode.
bit and corresponding OBF are both set to 1
bit is set to 1
LPC hardware reset, LPC software reset
Specification by SERIRQ transfer cycle stop frame
Specification by SERIRQ transfer cycle stop frame.
Rev. 1.00, 05/04, page 387 of 544