Section 21 FSI Interface
Rev. 1.00 Apr. 28, 2008 Page 722 of 994
REJ09B0452-0100
21.4.6
SPI Flash Memory Write Operation Mode
The write operation to the SPI flash memory in the LPC/FW memory write cycles can be
classified into the following four operation modes, depending or the state of FLDCT and
FLWAIT.
Table 21.7 SPI Flash Memory Write Operation in LPC/FW Memory Write Cycles
Operation
Mode
FLDCT
FLWAIT
Selected Register
Operation
Mode 1
0
0
FSIWBUSY
←
1
FSIWI
←
1
Control the write operation to the SPI
flash memory by the EC CPU. No wait
cycle is inserted to the LPC bus. Confirm
by FSIWBUSY whether or not a write
transfer has been completed.
Mode 2
0
1
FSIWBUSY
←
1
FSIWI
←
1
Control the write operation to the SPI
flash memory by the EC CPU. Wait
cycles are inserted to the LPC bus.
Provision of wait cycles can be canceled
by clearing FSIWBUSY.
Mode 3
1
0
LFBUSY
←
1
(Automatically
cleared)
Control the write operation to the SPI
flash memory by the FSI. No wait cycle is
inserted to the LPC bus. Confirm by
LFBUSY whether or not a write transfer
has been completed.
Mode 4
1
1
LFBUSY
←
1
(Automatically
cleared)
Control the write operation to the SPI
flash memory by the FSI. Wait cycles are
inserted to the LPC bus. Provision of wait
cycles can be canceled by clearing
LFBUSY.
Summary of Contents for H8S/2100 Series
Page 2: ...Rev 1 00 Apr 28 2008 Page ii of xxvi...
Page 54: ...Section 1 Overview Rev 1 00 Apr 28 2008 Page 28 of 994 REJ09B0452 0100...
Page 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
Page 158: ...Section 5 Interrupt Controller Rev 1 00 Apr 28 2008 Page 132 of 994 REJ09B0452 0100...
Page 244: ...Section 8 8 Bit PWM Timer PWMU Rev 1 00 Apr 28 2008 Page 218 of 994 REJ09B0452 0100...
Page 330: ...Section 10 16 Bit Timer Pulse Unit TPU Rev 1 00 Apr 28 2008 Page 304 of 994 REJ09B0452 0100...
Page 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Page 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
Page 706: ...Section 20 LPC Interface LPC Rev 1 00 Apr 28 2008 Page 680 of 994 REJ09B0452 0100...
Page 752: ...Section 21 FSI Interface Rev 1 00 Apr 28 2008 Page 726 of 994 REJ09B0452 0100...
Page 774: ...Section 23 RAM Rev 1 00 Apr 28 2008 Page 748 of 994 REJ09B0452 0100...
Page 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
Page 1020: ...Rev 1 00 Apr 28 2008 Page 994 of 994 REJ09B0452 0100...
Page 1023: ......
Page 1024: ...H8S 2117R Group Hardware Manual...