Section 19
LPC Interface (LPC)
Rev. 1.00 Mar. 12, 2008 Page 739 of 1178
REJ09B0403-0100
Wait for
H_BUSY = 0
Slave confirms the H_BUSY bit in BTCR.
Host confirms the B2H_ATN bit in BTCR.
The slave data write completion interrupt is notified to host.
Host sets the H_BUSY bit in BTCR.
Slave writes data of 1 to n bytes to the BTDTR
buffer.
Slave sets the B2H_ATN bit in BTCR to indicate
data write completion to the BTDTR buffer.
The HBTRI bit in BTSR0 is set to notify host reads
all data through the BTDTR buffer.
Host clears read pointer by setting the CLR_RD_PTR
bit in BTCR.
H_BUSY = 1
Generate slave
interrupt
Generate host
interrupt
Generate slave
interrupt
Generate slave
interrupt
Host waits for the B2H_ATN bit (interrupt from
slave) is set by slave.
Host clears the B2H_ATN bit in BTCR.
Host reads data from the BTDTR buffer.
Confirms the CLR_RD_PTR bit.
The CRRPI bit in BTSR1 is set to notify read
pointer clearing as an interrupt source to slave.
Confirms the B2H_ATN bit.
The B2HI bit in BTSR1 is set to notify host data
read completion as an interrupt source to slave.
Write BTDTR buffer
Read BTDTR buffer
H_BUSY = 0
Host clears the H_BUSY bit in BTCR to indicate
transfer completion.
B2H_ATN = 1
Clear read pointer
B2H_ATN = 0
Host
Slave
Figure 19.7 BT Read Transfer Flow
Содержание H8S Family
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Страница 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Страница 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Страница 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
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Страница 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Страница 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
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Страница 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Страница 1168: ...Section 30 Platform Environment Control Interface PECI Rev 1 00 Mar 12 2008 Page 1120 of 1178 REJ09B0403 0100...
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