Rev. 1.0, 02/00, page 235 of 1141
10.8.4
Operation
Port 7 can be used by the PMRB as a realtime output port or an I/O port.
Port 7 functions as a realtime output port when PMRB=1 and functions as an I/O port when
PMRB=0. Figure 10.3 show the block diagram of port 7.
P7/RP
RTPEGR write
RTPSR2 write
PMRA write
PDR7 write
PCR7 write
PDR7 read
RTPEGR
Select
Select
External trigger
RPTRG
Internal
trigger HSW
CK
RTPSR2
CK
PMRB:
Port mode register B
PCR7:
Port control register 7
PDR7:
Port data register 7
PCRS7:
Port control register slave 7
PDRS7:
Port data register slave 7
[Legend]
RTPSR2:
Realtime output trigger select register
RTPEGR:
Realtime output trigger edge select register
HSW:
Internal trigger signal
RPTRG:
External trigger pin
Internal data bus
PMRB
CK
PDR7
CK
PCR7
CK
PDRS7
CK
PCRS7
CK
Figure 10.3 Block Diagram of Port 7