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Section 19 LPC Interface (LPC)
The serialized interrupt transfer cycle frame configuration is as follows. Two of the states
comprising each frame are the recover state in which the SERIRQ signal is returned to the 1-level
at the end of the frame, and the turnaround state in which the SERIRQ signal is not driven. The
recover state must be driven by the host or slave that was driving the preceding state.
Table 19.10 Serialized Interrupt Transfer Cycle Frame Configuration
Serial Interrupt Transfer Cycle
Frame
Count
Contents
0
Start
1
IRQ0
2
IRQ1
3
SMI
4
IRQ3
5
IRQ4
6
IRQ5
7
IRQ6
8
IRQ7
9
IRQ8
10
IRQ9
11
IRQ10
12
IRQ11
13
IRQ12
14
IRQ13
15
IRQ14
16
IRQ15
17
IOCHCK
18
Stop
Rev. 1.00 Mar. 12, 2008 Page 748 of 1178
REJ09B0403-0100
Drive
Number
Source
of States
Slave
6
Host
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Slave
3
Host
Undefined
Notes
In quiet mode only, slave drive possible in the
first state, then next 3 states 0-driven by host
Drive impossible
Drive possible in LPC channel 1 and SCIF
Drive possible in LPC channels 2, 3, and SCIF
Drive possible in SCIF or by IRQ3E
Drive possible in SCIF or by IRQ4E
Drive possible in SCIF or by IRQ5E
Drive possible in LPC channels 2, 3, and SCIF
Drive possible in SCIF or by IRQ7E
Drive possible in SCIF or by IRQ8E
Drive possible in LPC channels 2, 3, and SCIF
Drive possible in LPC channels 2, 3, and SCIF
Drive possible in LPC channels 2, 3, and SCIF
Drive possible in LPC channel 1 and SCIF
Drive possible in SCIF or by IRQ13E
Drive possible in SCIF or by IRQ14E
Drive possible in SCIF or by IRQ15E
Drive impossible
First, 1 or more idle states, then 2 or 3 states
0-driven by host
2 states: Quiet mode next
3 states: Continuous mode next
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