mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1171

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

45.1.2 Features
The major features of the RGPIO module providing 16 bits of high-speed general-
purpose input/output are:
Freescale Semiconductor, Inc.
• Small memory-mapped device connected to the processor's local bus
• Simple programming model
• All memory references complete in a single cycle to provide zero wait-state
• Located in processor's high-speed clock domain
• Four 16-bit registers, mapped as three program-visible locations
RGPIO
module
responses
rgpio_enable
31
16
Pin Enables
rgpio_direction
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Pin Muxing + Pad Logic
31
Figure 45-1. RGPIO Block Diagram
mux
16
31
16
Direction
RGPIO[15:0]
rgpio_data_out
Preliminary
15
0
Write D ata
31
0
15
Chapter 45 Rapid GPIO (RGPIO)
decode
31
data to module
data from module
rgpio_data_in
0
Control
0
Read D ata
address
Local Bus
1171