National Semiconductor CP3BT26 User Manual page 68

Table 29 Port Registers
Name Address
PBALT FF FB00h
PBDIR FF FB02h
PBDIN FF FB04h
PBDOUT FF FB06h
PBWPU FF FB08h
PBHDRV FF FB0Ah
PBALTS FF FB0Ch
PCALT FF FB10h
PCDIR FF FB12h
PCDIN FF FB14h
PCDOUT FF FB16h
PCWPU FF FB18h
PCHDRV FF FB1Ah
PCALTS FF FB1Ch
PEALT FF FCC0h
PEDIR FF FCC2h
PEDIN FF FCC4h
PEDOUT FF FCC6h
PEWPU FF FCC8h
PEHDRV FF FCCAh
PEALTS FF FCCCh
PFALT FF FCE0h
PFDIR FF FCE2h
PFDIN FF FCE4h
PFDOUT FF FCE6h
PFWPU FF FCE8h
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Description
Port B Alternate
Function Register
Port B Direction Register
Port B Data Input Register
Port B Data Output Register
Port B Weak Pull-Up
Register
Port B High Drive
Strength Register
Port B Alternate Function
Select Register
Port C Alternate
Function Register
Port C Direction Register
Port C Data Input Register
Port C Data Output Register
Port C Weak Pull-Up
Register
Port C High Drive
Strength Register
Port C Alternate Function
Select Register
Port E Alternate
Function Register
Port E Direction Register
Port E Data Input Register
Port E Data Output Register
Port E Weak Pull-Up
Register
Port E High Drive
Strength Register
Port E Alternate Function
Select Register
Port F Alternate
Function Register
Port F Direction Register
Port F Data Input Register
Port F Data Output Register
Port F Weak Pull-Up
Register
Table 29 Port Registers
Name Address
PFHDRV FF FCEAh
PFALTS FF FCECh
PGALT FF F300h
PGDIR FF F302h
PGDIN FF F304h
PGDOUT FF F306h
PGWPU FF F308h
PGHDRV FF F30Ah
PGALTS FF F30Ch
PHALT FF F320h
PHDIR FF F322h
PHDIN FF F324h
PHDOUT FF F326h
PHWPU FF F328h
PHHDRV FF F32Ah
PHALTS FF F32Ch
PJALT FF F340h
PJDIR FF F342h
PJDIN FF F344h
PJDOUT FF F346h
PJWPU FF F348h
PJHDRV FF F34Ah
PJALTS FF F34Ch
In the descriptions of the ports and port registers, the lower-
case letter "x" represents the port designation, either B, C,
E, F, G, H, or J. For example, "PxDIR register" means any
one of the port direction registers: PBDIR, PCDIR, PEDIR,
PFDIR, PGDIR, PHDIR, or PJDIR.
68
Description
Port F High Drive
Strength Register
Port F Alternate Function
Select Register
Port G Alternate
Function Register
Port G Direction Register
Port G Data Input Register
Port G Data Output Register
Port G Weak Pull-Up
Register
Port G High Drive
Strength Register
Port G Alternate Function
Select Register
Port H Alternate
Function Register
Port H Direction Register
Port H Data Input Register
Port H Data Output Register
Port H Weak Pull-Up
Register
Port H High Drive
Strength Register
Port H Alternate Function
Select Register
Port J Alternate
Function Register
Port J Direction Register
Port J Data Input Register
Port J Data Output Register
Port J Weak Pull-Up
Register
Port J High Drive
Strength Register
Port J Alternate Function
Select Register