ez80f91 ZiLOG Semiconductor, ez80f91 Datasheet - Page 322

• Manufacturer Part Number: ez80f91
• Description: Ez80 Acclaimplus!? Connectivity Assp Ez80f91 Assp
• Manufacturer: ZiLOG Semiconductor

Table 194. EMAC Maximum Frame Length Register—Low Byte
Table 195. EMAC Maximum Frame Length Register—High Byte
PS027001-0707
Bit
Reset
CPU Access
Note: R/W = Read/Write.
Bit
Position
[7:0]
EMAC_MAXF_L
Bit
Reset
CPU Access
Note: R/W = Read/Write.
Bit
Position
[7:0]
EMAC_MAXF_H
VLAN Packet—
14 (Ethernet header) + 1500 MAC client data) + 4 (CRC) = 1522 bytes.
Value
00h–FFh These bits represent the Low byte of the 2 byte MAXF
Value
00h–
FFh
R/W
R/W
7
0
7
0
Description
These bits represent the High byte of the 2 byte MAXF
value, {EMAC_MAXF_H, EMAC_MAXF_L}. Bit 7 is bit 15
(msb) of the 16-bit value. Bit 0 is bit 8 of the 16-bit value.
Description
value, {EMAC_MAXF_H, EMAC_MAXF_L}. Bit 7 is bit 7 of
the 16-bit value. Bit 0 is bit 0 (lsb) of the 16-bit value.
Maximum frame size = VLAN with 4 byte header – 4 (VLAN header) +
R/W
R/W
6
0
6
0
R/W
R/W
5
0
5
0
R/W
R/W
4
0
4
0
R/W
R/W
3
0
3
0
R/W
R/W
2
0
2
1
(EMAC_MAXF_L = 0030h
(EMAC_MAXF_H = 0031h)
R/W
R/W
Ethernet Media Access Controller
1
0
1
1
Product Specification
R/W
R/W
0
0
0
0
eZ80F91 ASSP
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