Section 21 FSI Interface
Rev. 1.00 Apr. 28, 2008 Page 693 of 994
REJ09B0452-0100
21.3.8
FSI Transmit Data Registers 0 to 7 (FSITDR0 to FSITDR7)
FSITDR stores a total of 8 bytes of transmit data. A total of 8 bytes of addresses, instructions, and
data items can be transferred continuously from FSITDR0 through FSITDR7 in this order to the
SPI flash memory. When LFBUSY is set to 1, a write to this register by the EC (this LSI) is
invalid. This register should not be set in the processing other than FSICMDI and FSIWI interrupt
processing.
R/W
Bit Bit
Name
Initial
Value
EC Host
Description
7 to 0 bit 7 to bit 0 All 0
R/W
These bits store transmit data.
21.3.9
FSI Receive Data Register (FSIRDR)
FSIRDR stores a total of 4 bytes of receive data items continuously sent from the SPI flash
memory. This register should not be read in the processing other than FSICMDI interrupt
processing. Note that four bytes of receive registers share a single register address. A register to be
read will be determined according to the RBN bits in FSIBNR. When RBN = B'000, H'00 is read
out.
R/W
Bit Bit
Name
Initial
Value
EC Host
Description
7 to 0 bit 7 to bit 0 All 0
R
These bits store receive data.
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...
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