MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 609

• 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

29.2.3 RNG Entropy Register (RNGER)
The RNGER is a write-only register which allows the user to insert entropy into the RNG. This
register allows an external user to continually seed the RNG with externally generated random
data. Although the use of this register is recommended, it is optional. The RNGER can be written
at any time during operation.
Freescale Semiconductor
.
31–24
23–16
15–8
Bits
Address
7–4
3
2
1
0
Reset
Reset
W
W
R
R
31
15
0
0
0
Name
OFS
OFL
FUF
LRS
SV
—
—
EI
30
14
0
0
0
Reserved
Output FIFO size. Indicates size of the Output FIFO (16 words) & maximum possible value
of RNGR[OFL].
Output FIFO level. Indicates current number of random words in the Output FIFO. Used to
determine if valid random data is available for reading from the FIFO without causing an
underflow condition.
Reserved
Error interrupt. Signals a FIFO underflow. Reset by a write to RNGCR[CI] and not masked
by RNGCR[IM].
0 FIFO not read while empty.
1 FIFO read while empy.
FIFO underflow. Signals FIFO underflow. Reset by reading status register.
0 FIFO not read while empy, since last read of RNGSR.
1 FIFO read while empty, since last read of RNGSR.
Last read status. Reflects status of most recent read of the FIFO
0 During last read, FIFO was not empty.
1 During last read, FIFO was empy (underflow condition).
Security violation. When enabled by RNGCR[HA], signals that a FIFO underflow has
occurred. Bit is sticky and is only cleared by hardware reset
0 No violation occurred or RNGCR[HA] is cleared.
1 Security violation (FIFO underflow) has occurred.
29
13
Figure 29-2. RNG Status Register (RNGSR)
0
0
0
Table 29-3. RNGSR Field Descriptions
28
12
0
0
0
OFL
MCF5235 Reference Manual, Rev. 2
27
11
0
0
0
26
10
0
0
0
IPSBAR + 0x1A_0004
25
0
0
9
0
24
0
0
0
8
23
0
0
0
7
Description
22
0
0
0
6
21
0
5
0
0
20
1
0
0
4
OFS
EI
19
0
0
3
Memory Map/Register Definition
FUF LRS
18
0
0
2
17
0
0
1
SV
16
0
0
0
29-3