Rev. 3.0, 03/01, page 69 of 390
7.2
Register Configuration
Each I/O Port consists of four registers: Port Control Register, Port Data Register, Interrupt
Control Register and Interrupt Status Register. Table 7-2 below summarizes the port address
configuration of each register.
Table 7.2
The List of Register Configurations
Name
Abbr.
R/W
Initial
Value
Address
Register
Size
Access
Size
Port A Control Register
GPACR
R/W
H’FFFF
H’10004000
16
16
Port B Control Register
GPBCR
R/W
H’FFFF
H’10004002
16
16
Port C Control Register
GPCCR
R/W
H’FFFF
H’10004004
16
16
Port D Control Register
GPDCR
R/W
H’FFFF
H’10004006
16
16
Port E Control Register
GPECR
R/W
H’FFFF
H’10004008
16
16
Port A Data Register
GPADR
R/W
-
H’10004010
8
16
Port B Data Register
GPBDR
R/W
-
H’10004012
8
16
Port C Data Register
GPCDR
R/W
-
H’10004014
8
16
Port D Data Register
GPDDR
R/W
-
H’10004016
8
16
Port E Data Register
GPEDR
R/W
-
H’10004018
8
16
Port A Interrupt Control Register
GPAICR
R/W
H’0000
H’10004020
16
16
Port B Interrupt Control Register
GPBICR
R/W
H’0000
H’10004022
16
16
Port C Interrupt Control Register
GPCICR R/W
H’0000
H’10004024
16
16
Port D Interrupt Control Register
GPDICR R/W
H’0000
H’10004026
16
16
Port E Interrupt Control Register
GPEICR
R/W
H’0000
H’10004028
16
16
Port A Interrupt Status Register
GPAISR
R
H’0000
H’10004040
8
16
Port B Interrupt Status Register
GPBISR
R
H’0000
H’10004042
8
16
Port C Interrupt Status Register
GPCISR
R
H’0000
H’10004044
8
16
Port D Interrupt Status Register
GPDISR
R
H’0000
H’10004046
8
16
Port E Interrupt Status Register
GPEISR
R
H’0000
H’10004048
8
16
Summary of Contents for HD64465
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