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I/O Ports
15-55
Port A input/output control register
Register symbol: PADIR
Address: x'36008074
Purpose: This register sets the port A pins for input or output.
Valid when the PAM is "1".
(0: input; 1: output)
Bit No. 76543210
Bit name PA7D PA6D PA5D PA4D PA3D PA2D PA1D PA0D
Reset 00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
Port A output mode register
Register symbol: PAMD
Address: x'36008034
Purpose: When PAM is "1", the port A pins are set as a general-purpose port; when PAM is "0", the
port A pins are set as address pins.
When PAPU is "1", the port A pins are pulled up.
Note : The setting of PAPU that pulls up (or does not pull up ) the port A pins can be made regardless
of the value of PAM.
Bit No. 76543210
Bit name ------PAPU PAM
Reset 0000000(1) 0
Access RRRRRRR/WR/W
() are set in addresses/data multiplex mode.