Section 17 Synchronous Serial Communication Unit (SSU)
Rev. 1.00 Mar. 12, 2008 Page 560 of 1178
REJ09B0403-0100
Bit Bit
Name
Initial
Value
R/W Description
2
TDRE
1
R/W
Transmit Data Empty
Indicates whether or not SSTDR contains transmit data.
[Setting conditions]
•
When the TE bit in SSER is 0
•
When data is transferred from SSTDR to SSTRSR
and SSTDR is ready to be written to.
[Clearing conditions]
•
When writing 0 after reading TDRE
=
1
•
When writing data to SSTDR with TE
=
1
1
RDRF
0
R/W
Receive Data Register Full
Indicates whether or not SSRDR contains receive data.
[Setting condition]
•
When receive data is transferred from SSTRSR to
SSRDR after successful serial data reception
[Clearing conditions]
•
When writing 0 after reading RDRF
=
1
•
When reading receive data from SSRDR
0 CE 0 R/W
Conflict/Incomplete
Error
Indicates that a conflict error has occurred
when 0 is externally input to the
SCS
pin with SSUMS
=
0 (SSU mode) and MSS
=
1 (master mode).
If the
SCS
pin level changes to 1 with SSUMS
=
0 (SSU
mode) and MSS
=
0 (slave mode), an incomplete error
occurs because it is determined that a master device
has terminated the transfer. Data reception does not
continue while the CE bit is set to 1. Serial transmission
also does not continue. Reset the SSU internal
sequencer by setting the SRES bit in SSCRL to 1
before resuming transfer after incomplete error.
[Setting condition]
•
When a low level is input to the
SCS
pin in master
mode (the MSS bit in SSCRH is set to 1)
•
When the
SCS
pin is changed to 1 during transfer in
slave mode (the MSS bit in SSCRH is cleared to 0)
[Clearing condition]
•
When writing 0 after reading CE
=
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...
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Page 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...