MSC8101PG Motorola / Freescale Semiconductor, MSC8101PG Datasheet - Page 102

• Manufacturer Part Number: MSC8101PG
• Description: MSC8101PG 16-Bit Digital Signal Processor Quick Reference
• Manufacturer: Motorola / Freescale Semiconductor

6.4
CPM, Parallel I/O Ports
To DED IN1
To/from internal bus
From DED OUT1
From DED OUT2
To DED IN2
PPAR and PSOR and PDIR
PPAR and PSOR and PDIR
Notes:
Port Register Name
PSORx
PODRx
PDATx
PPARx
PDIRx
1. Bidirectional signals must be programmed as inputs (PDIR = 0).
PSOR
0
1
0
0
1
1
Port Data Registers [A–D]
Port Data Direction
Port Pin Assignment Registers [A–D]
Port Special Options Registers [A–D]
Port Open-Drain Registers [A–D]
PDATx Write
PDATx
Latch
Figure 6-2. Port Functional Block Diagram
Default
Input IN2
Default
Input IN1
Description
1
PDATx Read
Registers [A–D]
PPAR
1
0
PDIR
General-purpose
Dedicated 1
Regular
Input
0
0
Control
PODR
Open-
Drain
EN
Dedicated 2
Pin
Open drain
Dedicated
Output
1
1