ez80f91 ZiLOG Semiconductor, ez80f91 Datasheet - Page 330

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

Table 205. EMAC Transmit Lower Boundary Pointer Register—Low Byte (EMAC_TLBP_L = 0042h)
Table 206. EMAC Transmit Lower Boundary Pointer Register—High Byte (EMAC_TLBP_H
= 0043h)*
PS027001-0707
Bit
Reset
CPU Access
Note: R/W = Read/Write.
Bit
Position
[7:0]
EMAC_TLBP_L
Bit
Reset
CPU Access
Note: R/W = Read/Write.
Bit
Position
[7:0]
EMAC_TLBP_H
Note: *Bits 7:5 are not used by the EMAC; these bits return 000.
EMAC Transmit Lower Boundary Pointer Register—Low and High Bytes
The EMAC Transmit Lower Boundary Pointer is set to the start of the Transmit buffer in
EMAC shared memory. See
Value
00h–
FFh
Value
00h–
FFh
R/W
R
7
0
7
1
Description
These bits represent the Low byte of the 2 byte Transmit
Lower Boundary Pointer value, {EMAC_TLBP_H,
EMAC_TLBP_L}. Bit 7 is bit 7 of the 16 bit value. Bit 0 is bit 0
(lsb) of the 16 bit value.
Description
These bits represent the High byte of the 2 byte Transmit
Lower Boundary Pointer value, {EMAC_TLBP_H,
EMAC_TLBP_L}. Bit 7 is bit 15 (msb) of the 16 bit value. Bits
7:5 default to 000 on reset; bit 0 is bit 8 of the 16-bit value.
R/W
R
6
0
6
1
R/W
R
5
0
5
0
Table 205
R/W
R
4
0
4
0
and
R/W
Table
R
3
0
3
0
206.
R/W
R
2
0
2
0
R/W
Ethernet Media Access Controller
R
1
0
1
0
Product Specification
R/W
R
0
0
0
0
eZ80F91 ASSP
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