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HD64F2149YV Folha de dados(PDF) 674 Page - Renesas Technology Corp |
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HD64F2149YV Folha de dados(HTML) 674 Page - Renesas Technology Corp |
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674 / 1075 page  Section 18B Host Interface LPC Interface (LPC) Rev. 3.00 Jan 18, 2006 page 646 of 1044 REJ09B0280-0300 Serial Interrupt Transfer Cycle Frame Count Contents Drive Source Number of States Notes 0Start Slave Host 6 In quiet mode only, slave drive possible in first state, then next 3 states 0-driven by host 1HIRQ0 Slave 3 2 HIRQ1 Slave 3 Drive possible in LPC channel 1 3 SMI Slave 3 Drive possible in LPC channels 2 and 3 4HIRQ3 Slave 3 5HIRQ4 Slave 3 6HIRQ5 Slave 3 7 HIRQ6 Slave 3 Drive possible in LPC channels 2 and 3 8HIRQ7 Slave 3 9HIRQ8 Slave 3 10 HIRQ9 Slave 3 Drive possible in LPC channels 2 and 3 11 HIRQ10 Slave 3 Drive possible in LPC channels 2 and 3 12 HIRQ11 Slave 3 Drive possible in LPC channels 2 and 3 13 HIRQ12 Slave 3 Drive possible in LPC channel 1 14 HIRQ13 Slave 3 15 HIRQ14 Slave 3 16 HIRQ15 Slave 3 17 IOCHCK Slave 3 18 Stop Host Undefined 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 There are two modes—continuous mode and quiet mode—for serialized interrupts. The mode initiated in the next transfer cycle is selected by the stop frame of the serialized interrupt transfer cycle that ended before that cycle. In continuous mode, the host initiates host interrupt transfer cycles at regular intervals. In quiet mode, the slave processor with interrupt sources requiring a request can also initiate an interrupt transfer cycle, in addition to the host. In quiet mode, since the host does not necessarily initiate interrupt transfer cycles, it is possible to suspend the clock (LCLK) supply and enter the power- down state. In order for a slave to transfer an interrupt request in this case, a request to restart the |
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