Section 18
I
2
C Bus Interface (IIC)
Rev. 1.00 Mar. 12, 2008 Page 627 of 1178
REJ09B0403-0100
Receive Operation Using the Wait Function:
Figures 18.13 and 18.14 show the sample flowcharts for the operations in master receive mode
(WAIT = 1).
Set TRS = 0 in ICCR
Set ACKB = 0 in ICSR
Set WAIT = 1 in ICMR
Yes
Yes
Yes
Clear IRIC in ICCR
Clear IRIC in ICCR
Read IRIC in ICCR
Last receive?
IRIC = 1?
IRTR = 1?
Yes
IRTR=1?
No
No
No
No
Read IRIC in ICCR
IRIC=1?
No
Yes
Read ICDR
[4] Determine end of reception
[13] Determine end of reception
[1] Select receive mode.
[2] Start receiving. The first read
is a dummy read.
[3] Wait for a receive wait
(Set IRIC at the fall of the 8th clock) or,
Wait for 1 byte to be received
(Set IRIC at the rise of the 9th clock)
[12] Wait for a receive wait
(Set IRIC at the fall of the 8th clock) or,
Wait for 1 byte to be received
(Set IRIC at the rise of the 9th clock)
[5] Read the receive data.
[6] Clear IRIC.
(to end the wait insertion)
[15] Clear wait mode.
Clear IRIC.
( IRIC should be cleared to 0
after setting WAIT = 0.)
[17] Generate stop condition
Master receive mode
[14] Clear IRIC.
(to end the wait insertion)
[16] Read the last receive data.
[7] Set acknowledge data for the last reception.
[8] Wait for TRS setting
[9] Set TRS for stop condition issuance
[10] Read the receive data.
[11] Clear IRIC.
Read ICDR
Clear IRIC in ICCR
Set HNDS = 0 in ICXR
Wait for one clock pulse
Set ACKB = 1 in ICSR
Set TRS = 1 in ICCR
End
Set WAIT = 0 in ICMR
Set BBSY= 0 and SCP= 0
in ICCR
Clear IRIC in ICCR
Read ICDR
Clear IRIC in ICCR
Read ICDR
Figure 18.13 Sample Flowchart for Operations in Master Receive Mode
(receiving multiple bytes) (WAIT = 1)
Summary of Contents for H8S Family
Page 2: ...Rev 1 00 Mar 12 2008 Page ii of xIviii...
Page 8: ...Rev 1 00 Mar 12 2008 Page viii of xIviii...
Page 28: ...Rev 1 00 Mar 12 2008 Page xxviii of xIviii...
Page 48: ...Rev 1 00 Mar 12 2008 Page xlviii of xIviii...
Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Page 1226: ...Rev 1 00 Mar 12 2008 Page 1178 of 1178 REJ09B0403 0100...
Page 1229: ......
Page 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...