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83C795 Datasheet(PDF) 53 Page - SMSC Corporation

Part # 83C795
Description  Ethernet System Controller
PDF  136 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

83C795 Datasheet(HTML) 53 Page - SMSC Corporation

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5.2.48 RENH - Receive Enhancement Register
Normal Map R ead/Write Port = 0:19
T he R eceive E nhancement R egis ter contains
s everal bits requiredfor thenewreceive features of
the 83C795 chip.
BIT
RENH
RESET
7—
0
6—
0
5—
0
4—
0
3—
0
2
REMPTY
0
1
ERFBIT
0
0
WRAPEN
0
Bit 2: REMPTY, Ring Bit Empty
When R E MPT Y = 1, this read-only bit indicates that
the receive buffer ring has no completely received
frames.
Bit 1: ERFBIT, Early Receive Fail Bit
When E R F BIT = 1 it indicates that an underrun has
occurred during the reception of a frame. T he hos t
clears this bit after reading the addres s where the
failure occurred from the E R FA R egis ters.
Bit 0: WRAPEN, Automatic Ring-Wrap Enable
When WR APE N = 1 it enables the auto-wrapping
feature. For more information on Automatic R ing-
Wrap, refer to page 87.
83C795
ETHERNET SYSTEM CONTROLLER REGISTERS
40



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