Fujitsu MB90460 Series Hardware Manual page 218

■ Block Diagram of Port 6 Pins
Figure 9.9-1 is a block diagram of port 6 pins.
Port data register (PDR)
PDR read
PDR write
Port data direction register (DDR)
DDR write
DDR read
■ Port 6 Registers
Port 6 registers are PDR6 and DDR6. The bits making up each register correspond to the port 6 pins on a
one-to-one basis. Table 9.9-2 lists the port 6 pins and their corresponding register bits.
Table 9.9-2 Port 6 Pins and their Corresponding Register Bits
Port
PDR6, DDR6
Port 6
Corresponding pin
Figure 9.9-1 Block Diagram of Port 6 Pins
Output latch
Direction latch
Register bits and corresponding port pins
bit7 bit6
– –
Resource output
Resource input
Resource output enable
Standby control (SPL = 1)
bit5 bit4 bit3
– – P63
CHAPTER 9 I/O PORT
Pin
External interrupt enable
bit2 bit1 bit0
P62 P61 P60
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