EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 303

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

PS019209-0504
EMAC FIFO Data Register—Low and High Bytes
The FIFO Read/Write Test Access Data Register allows writing and reading the
FIFO selected by the EMAC_TEST TxRx_SEL bit when the EMAC_TEST register
TEST_FIFO bit is set. See Tables 182 and 183.
Table 182. EMAC FIFO Data Register—Low Byte
(EMAC_FDATA_L = 0057h)
Table 183. EMAC FIFO Data Register—High Byte
(EMAC_FDATA_H = 0058h)
Bit
Reset
CPU Access
Note: R/W = Read/Write.
Bit
Position
[7:0]
EMAC_FDATA_L
Bit
Reset
CPU Access
Note: R = Read Only; R/W = Read/Write.
Bit
Position
[7:2]
[1:0]
EMAC_FDATA_H
Value
00h–
FFh
Value
00h
0h–3h
R/W
P R E L I M I N A R Y
X
R
7
7
0
Description
These bits represent the Low byte of the 10-bit EMAC
FIFO data value, {EMAC_FDATA_H[1:0],
EMAC_FDATA_L}. Bit 7 is bit 7 of the 16-bit value. Bit 0 is
bit 0 (lsb) of the 10-bit value.
Description
Reserved.
These bits represent the upper two bits of the 10-bit
EMAC FIFO data value, {EMAC_FDATA_H[1:0],
EMAC_FDATA_L}. Bit 1 is bit 9 (msb) of the 16-bit value.
Bit 0 is bit 8 of the 10-bit value.
R/W
R
6
X
6
0
R/W
R
X
5
5
0
R/W
R
X
4
4
0
R/W
Ethernet Media Access Controller
R
X
3
3
0
Product Specification
R/W
R
X
2
2
0
eZ80F91 MCU
R/W
R/W
X
X
1
1
R/W
R/W
X
X
0
0
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