cp3cn17 National Semiconductor Corporation, cp3cn17 Datasheet - Page 65

• Manufacturer Part Number: cp3cn17
• Description: Reprogrammable Connectivity Processor With Can Interface
• Manufacturer: National Semiconductor Corporation

PGDOUT
PBDOUT
PBHDRV
PCDOUT
PCHDRV
PGHDRV
PBALTS
PCWPU
PCALTS
PGWPU
PGALTS
PBWPU
PCALT
PCDIR
PCDIN
PGALT
PGDIR
PGDIN
PBALT
PBDIR
PBDIN
Name
Table 30 Port Registers
FF FCACh
FF FB0Ch
FF FB1Ch
FF FCA0h
FF FCA2h
FF FCA4h
FF FCA6h
FF FCA8h
FF FCAAh
FF FB0Ah
FF FB1Ah
FF FB00h
FF FB02h
FF FB04h
FF FB06h
FF FB08h
FF FB10h
FF FB12h
FF FB14h
FF FB16h
FF FB18h
Address
Port G Alternate Func-
Port B Alternate Func-
Port C Alternate Func-
Port G Weak Pull-Up
Port B Weak Pull-Up
Port C Weak Pull-Up
tion Select Register
tion Select Register
tion Select Register
Port C Data Output
Port G Data Output
Port B Data Output
Function Register
Function Register
Function Register
Port G High Drive
Port B High Drive
Strength Register
Port C Data Input
Port C High Drive
Strength Register
Port G Data Input
Strength Register
Port B Data Input
Port G Alternate
Port B Alternate
Port C Alternate
Port C Direction
Port G Direction
Port B Direction
Description
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
Register
65
In the descriptions of the ports and port registers, the lower-
case letter “x” represents the port designation, either B, C,
G, H, or I. For example, “PxDIR register” means any one of
the port direction registers: PBDIR, PCDIR, PGDIR, PH-
DIR, or PIDIR.
All of the port registers are byte-wide read/write registers,
except for the port data input registers, which are read-only
registers. Each register bit controls the function of the cor-
responding port pin. For example, PGDIR.2 (bit 2 of the
PGDIR register) controls the direction of port pin PG2.
PHDOUT
PHHDRV
PHALTS
PIDOUT
PHWPU
PIHDRV
PIWPU
PIALTS
PHALT
PHDIR
PHDIN
Name
PIALT
PIDIR
PIDIN
Table 30 Port Registers
FF FCCAh
FF FCCCh
FF FCC0h
FF FCC2h
FF FCC4h
FF FCC6h
FF FCC8h
FF FEEAh
FF FEECh
FF FEE0h
FF FEE2h
FF FEE4h
FF FEE6h
FF FEE8h
Address
Port H Alternate Func-
Port I Alternate Func-
Port H Weak Pull-Up
Port I Weak Pull-Up
tion Select Register
tion Select Register
Port H Data Output
Port I Data Output
Function Register
Function Register
Port H Data Input
Port H High Drive
Strength Register
Strength Register
Port I Data Input
Port I High Drive
Port H Alternate
Port H Direction
Port I Alternate
Port I Direction
Description
Register
Register
Register
Register
Register
Register
Register
Register
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