參數(shù)資料
型號： DS33ZH11
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 網(wǎng)絡(luò)接口
英文描述： Ethernet Mapper
中文描述： DATACOM, NETWORK INTERFACE SUPPORT CIRCUIT, PBGA100
封裝： 10 X 10 MM, 1.41 MM HEIGHT, 0.80 MM PITCH, CSBGA-100
文件頁數(shù)： 118/169頁
文件大?。?/td> 1049K
代理商： DS33ZH11
DS33Z11 Ethernet Mapper
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
118 of 169
SU.RFSB0
Receive Frame Status Byte 0
154h
7
6
5
4
3
2
1
0
FL7
0
FL6
0
FL5
0
FL4
0
FL3
0
FL2
0
FL1
0
FL0
0
Bits 0 - 7: Frame Length (FL[0:7])
These 8 bits are the low byte of the length (in bytes) of the received frame,
with FCS and Padding. If Automatic Pad Stripping is enabled, this value is the length of the received packet
without PCS or Pad bytes. The upper 6 bits are contained in SU.RFSB1.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
SU.RFSB1
Receive Frame Status Byte 1
155h
7
RF
0
6
5
4
3
2
1
0
WT
0
FL13
0
FL12
0
FL11
0
FL10
0
FL9
0
FL8
0
Bit 7: Runt Frame (RF)
This bit is set to 1 if the received frame was altered by a collision or terminated within the
collision window.
Bit 6: Watchdog Timeout (WT)
This bit is set to 1 if a packet receive time exceeds 2048 byte times. After 2048
byte times the receiver is disabled and the received frame will fail CRC check.
Bits 0-5: Frame Length (FL[8:13])
These 6 bits are the upper bits of the length (in bytes) of the received frame,
with FCS and Padding. If Automatic Pad Stripping is enabled, this value is the length of the received packet
without PCS or Pad bytes.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
SU.RFSB2
Receive Frame Status Byte 2
156h
7
-
0
6
-
0
5
4
3
2
FT
0
1
0
CRCE
0
DB
0
MIIE
0
CS
0
FTL
0
Bit 5: CRC Error (CRCE)
This bit is set to 1 if the received frame does not contain a valid CRC value.
Bit 4: Dribbling Bit (DB)
This bit is set to 1 if the received frame contains a non-integer multiple of 8 bits. It does
not indicate that the frame is invalid. This bit is not valid for runt or collided frames.
Bit 3: MII Error (MIIE)
This bit is set to 1 if an error was found on the MII bus.
Bit 2: Frame Type (FT)
This bit is set to 1 if the received frame exceeds 1536 bytes. It is equal to zero if the
received frame is an 802.3 frame. This bit is not valid for runt frames.
Bit 1: Collision Seen (CS)
This bit is set to 1 if a late collision occurred on the received packet. A late collision is
one that occurs after the 64-byte collision window.
Bit 0: Frame Too Long (FTL)
This bit is set to 1 if a frame exceeds the 1518 byte maximum standard Ethernet
frame. This bit is only an indication, and causes no frame truncation.
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