CHAPTER 5 REGISTERS
PRELIMINARY
NEC confidential and Proprietary
299
(146) Receive S1, 1st Z2 and E2 drop register (S1Z2E2R)
The S1Z2E2R register is used for storing the receive S1, 1st Z2 and E2 byte.
Address
Register
Name
Port0: Port1: Port2: Port3:
Access Default
S1Z2E2R
037C H
077C H
0B7C H
0F7C H
R
00000000 H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
E2[7:0]
15
14
13
12
11
10 9 8 7 6 5 4 3 2 1 0
Z2F[7:0]
S1[7:0]
Bit Field
Function
Default
D31-
D24
Reserved
0
D23-
D16
E2[7:0]
Stores the receive E2 byte. This field is updated each time a frame is received.
0
D15-D8
Z2F[7:0]
Stores the receive 1st Z2 byte. This field is updated each time a frame is received.
0
D7-D0
S1[7:0]
Stores the receive S1 byte. This field is updated each time a frame is received.
0
(147) Receive 1st Z2 drop register 1 (Z2FDR)
The Z2FDR register is used for storing the receive 1st Z2 byte.
Address
Register
Name
Port0: Port1: Port2: Port3:
Access Default
Z2FDR
0380 H
0780 H
0B80 H
0F80 H
R
00000000 H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
15
14
13
12
11
10 9 8 7 6 5 4 3 2 1 0
Reserved
Z2FD[7:0]
Bit Field
Function
Default
D31-D8
Reserved
0
D7-D0
Z2FD[7:0]
Stores the receive 1st Z2 byte. This field is updated when six contiguous frames
containing the same bit 6-7 of 1st Z2 byte are received after the contents of the
register are changed.
0
Содержание UPD98413
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