Section 19
Keyboard Buffer Control Unit (PS2)
Rev. 1.00 Apr. 28, 2008 Page 595 of 994
REJ09B0452-0100
Bit Bit
Name
Initial
Value R/W Description
2 KBF
0 R/(W)
*
Keyboard Buffer Register Full
Indicates that data reception has been completed and
the received data is in KBBR. When both KBIE and
KBF are set to1, an interrupt request is sent to the
CPU.
0: [Clearing condition]
Read KBF when KBF =1, then write 0 in KBF
1: [Setting conditions]
•
When data has been received normally and has
been transferred to KBBR while KBFSEL = 1
(keyboard buffer register full flag)
•
When a KCLK falling edge is detected while
KBFSEL = 0 (KCLK interrupt flag)
1 PER
0 R/(W)
*
Parity
Error
Indicates that an odd parity error has occurred.
0: [Clearing condition]
Read PER when PER =1, then write 0 in PER
1: [Setting condition]
When an odd parity error occurs
0 KBS
0 R Keyboard
Stop
Indicates the receive data stop bit. Valid only when
KBF = 1.
0: 0 stop bit received
1: 1 stop bit received
Note:
*
Only 0 can be written for clearing the flag.
Содержание H8S/2100 Series
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Страница 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
Страница 158: ...Section 5 Interrupt Controller Rev 1 00 Apr 28 2008 Page 132 of 994 REJ09B0452 0100...
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Страница 354: ...Section 11 16 Bit Cycle Measurement Timer TCM Rev 1 00 Apr 28 2008 Page 328 of 994 REJ09B0452 0100...
Страница 380: ...Section 12 16 Bit Duty Period Measurement Timer TDP Rev 1 00 Apr 28 2008 Page 354 of 994 REJ09B0452 0100...
Страница 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Страница 494: ...Section 15 Serial Communication Interface SCI Rev 1 00 Apr 28 2008 Page 468 of 994 REJ09B0452 0100...
Страница 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
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