MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 607

• Manufacturer Part Number: MOD5234-100IR
• Description: MOD5234 10/100 ETHERNET MODULE
• Manufacturer: NetBurner Inc
• Type: Controllers & Processorsr

Specifications of MOD5234-100IR

• Interface: I²C, SPI, UART
• Voltage - Supply: 2.5V
• Mounting Type: Surface Mount
• Package / Case: Module
• Product: Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Format: -
• Baud Rates: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4483564

Chapter 29
Random Number Generator (RNG)
29.1
This chapter describes the Random Number Generator (RNG), including a programming model,
functional description, and application information.
29.1.1 Overview
The Random Number Generator (RNG) module is capable of generating 32-bit random numbers.
It is designed to comply with FIPS-140 standards for randomness and non-determinism. The
random bits are generated by clocking shift registers with clocks derived from ring oscillators. The
configuration of the shift registers ensures statistically good data (i.e. data that looks random). The
oscillators with their unknown frequencies provide the required entropy needed to create random
data.
29.2
The address map for the RNG module is shown in
found in the following section.
29.2.1 RNG Control Register (RNGCR)
Immediately following reset, the RNG begins generating entropy in its internal shift registers.
Random data is not pushed to the output FIFO until after the GO bit in the RNGCR is set to a one.
Freescale Semiconductor
Introduction
Memory Map/Register Definition
IPSBAR Offset
0x1A_000C
0x1A_0000
0x1A_0004
0x1A_0008
Please note that the MCF5232, MCF5233, and MCF5234 do NOT
contain cryptography modules. Please refer to
device configurations.
Mnemonic
RNGOUT
RNGCR
RNGSR
RNGER
Table 29-1. RNG Module Memory Map
MCF5235 Reference Manual, Rev. 2
[31:24]
NOTE
RNG Entropy Register
RNG Control Register
[23:16]
RNG Status Register
RNG Output FIFO
Table
29-1. Detailed register descriptions are
Table 1-1
[15:8]
for details on
[7:0]
Access
R/W
W
R
R
29-1