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LAN89730 датащи(PDF) 48 Page - Microchip Technology

номер детали LAN89730
подробное описание детали  Implements Reduced Power Operating Modes
PDF  218 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN89730 датащи(HTML) 48 Page - Microchip Technology

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LAN89730
DS60001348A-page 48
 2013-2015 Microchip Technology Inc.
4.3.3.3
Get Statistics Command
The Get Statistics Command returns the entire contents of the statistics RAMs. The wIndex field is used to select the
RX or TX statistics.
Note 4-18
0b - Retrieves RX statistics. 1b - Retrieves TX statistics.
Note 4-19
28h for RX statistics. 30h for TX statistics.
Note:
The contents of the statistics RAM is snapshot when fulfilling the command request. The statistics counters
rollover, hence the RAM is not cleared.
TABLE 4-37:
FORMAT OF GET STATISTICS SETUP STAGE
Offset
Field
Value
0h
bmRequestType
C0h
1h
bRequest
A2h
2h
wValue
00h
4h
wIndex
Note 4-18
6h
wLength
Note 4-19
TABLE 4-38:
FORMAT OF GET STATISTICS DATA STAGE (RX)
Offset
Field
00h
RX Good Frames
04h
RX CRC Errors
08h
RX Runt Frame Errors
0Ch
RX Alignment Errors
10h
RX Frame Too Long Error
14h
RX Later Collision Error
18h
RX Bad Frames
1Ch
RX FIFO Dropped Frames
20h
RESERVED
24h
RESERVED
TABLE 4-39:
FORMAT OF GET STATISTICS DATA STAGE (TX)
Offset
Field
00h
TX Good Frames
04h
TX Pause Frames
08h
TX Single Collisions
0Ch
TX Multiple Collisions
10h
TX Excessive Collision Errors
14h
TX Late Collision Errors
18h
TX Buffer Underrun Errors
1Ch
TX Excessive Deferral Errors
20h
TX Carrier Errors
24h
TX Bad Frames
28h
RESERVED
2Ch
RESERVED



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