56F8167 datasheet(111/184 Pages) FREESCALE

111 / 184 page

Overview

56F8367 Technical Data, Rev. 7.0

Freescale Semiconductor

111

Preliminary

Part 6 System Integration Module (SIM)

6.1 Overview

The SIM module is a system catchall for the glue logic that ties together the system-on-chip. It controls

distribution of resets and clocks and provides a number of control features. The system integration module

is responsible for the following functions:

•

Reset sequencing

•

Clock generation & distribution

•

Stop/Wait control

•

Pull-up Enables for Selected Peripherals

•

System status registers

•

Registers for software access to the JTAG ID of the chip

•

Enforcing Flash security

These are discussed in more detail in the sections that follow.

6.2 Features

The SIM has the following features:

•

Flash security feature prevents unauthorized access to code/data contained in on-chip Flash memory

•

Power-saving clock gating for peripheral

•

Three power modes (Run, Wait, Stop) to control power utilization

— Stop mode shuts down 56800E core, system clock, peripheral clock, and PLL operation

— Stop mode entry can optionally disable PLL and Oscillator (low power vs. fast restart); must be done

explicitly

— Wait mode shuts down the 56800E core, and unnecessary system clock operation

— Run mode supports full part operation

•

Controls to enable/disable the 56800E core WAIT and STOP instructions

•

Calculates base delay for reset extension based upon POR or RESET operations. Reset delay will be either

3 x 32 clocks for reset, except for POR, which is 221 clock cycles.

•

Controls reset sequencing after reset

•

Software-initiated reset

•

Four 16-bit registers reset only by a Power-On Reset usable for general purpose software control

•

System Control Register

•

Registers for software access to the JTAG ID of the chip

56F8167 Datasheet(PDF) 111 Page - Freescale Semiconductor, Inc

56F8167 Datasheet(HTML) 111 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL