MOD5234-100IR NetBurner Inc, MOD5234-100IR Datasheet - Page 390
MOD5234-100IR
Manufacturer Part Number
MOD5234-100IR
Description
MOD5234 10/100 ETHERNET MODULE
Manufacturer
NetBurner Inc
Type
Controllers & Processorsr
Datasheets
1.MOD5272-100IR.pdf
(3 pages)
2.MOD5234-100IR.pdf
(4 pages)
3.MOD5234-100IR.pdf
(754 pages)
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
- Current page: 390 of 754
- Download datasheet (13Mb)
Fast Ethernet Controller (FEC)
19.2.4.20 FIFO Receive Start Register (FRSR)
The FRSR is programmed by the user to indicate the starting address of the receive FIFO. FRSR
marks the boundary between the transmit and receive FIFOs. The transmit FIFO uses addresses
from the start of the FIFO to the location four bytes before the address programmed into the FRSR.
The receive FIFO uses addresses from FRSR to FRBR inclusive.
The FRSR register is initialized by hardware at reset. FRSR only needs to be written to change the
default value.
19.2.4.21 Receive Descriptor Ring Start Register (ERDSR)
The ERDSR is written by the user. It provides a pointer to the start of the circular receive buffer
descriptor queue in external memory. This pointer must be 32-bit aligned; however, it is
recommended it be made 128-bit aligned (evenly divisible by 16).
19-26
Address
Reset
Reset
31–10
31–10
Bits
Bits
9–2
1–0
9–2
1–0
W
W
R
R
31
15
0
0
0
0
R_FSTART Address of first receive FIFO location. Acts as delimiter between receive and transmit
R_BOUND Read-only. Highest valid FIFO RAM address.
Name
Name
30
14
0
0
0
0
—
—
—
—
Figure 19-21. FIFO Receive Start Register (FRSR)
29
13
0
0
0
0
Reserved, read as 0 (except bit 10, which is read as 1).
Reserved, should be cleared.
Reserved, read as 0 (except bit 10, which is read as 1).
FIFOs.
Reserved, read as 0.
28
12
Table 19-23. FRBR Field Descriptions
0
0
0
0
Table 19-24. FRSR Field Descriptions
27
11
0
0
0
0
MCF5235 Reference Manual, Rev. 2
26
10
0
0
0
1
25
0
0
0
9
IPSBAR + 0x1150
24
0
0
1
8
Descriptions
Descriptions
23
0
0
0
7
R_FSTART
22
0
0
6
0
21
0
0
0
5
20
0
0
0
4
19
0
0
0
3
Freescale Semiconductor
18
0
0
0
2
17
0
0
0
0
1
16
0
0
0
0
0
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