CHAPTER 5 REGISTERS
PRELIMINARY
NEC confidential and Proprietary
295
(141) Receive Section DCC drop register (SDCCR)
The SDCCR register is used for storing the receive D1 through D3 bytes.
Address
Register
Name
Port0: Port1: Port2: Port3:
Access Default
SDCCR
0368 H
0768 H
0B68 H
0F68 H
R
00000000 H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Reserved
D3[7:0]
15
14
13
12
11
10 9 8 7 6 5 4 3 2 1 0
D2[7:0]
D1[7:0]
Bit Field
Function
Default
D31-
D24
Reserved
0
D23-
D16
D3[7:0]
Stores the receive D3 byte. This field is updated each time a frame is received.
0
D15-D8
D2[7:0]
Stores the receive D2 byte. This field is updated each time a frame is received.
0
D7-D0
D1[7:0]
Stores the receive D1 byte. This field is updated each time a frame is received.
0
(142) Receive K1 and K2 drop register (K12R)
The K12R register is used for storing the receive K1 and K2 bytes.
Address
Register
Name
Port0: Port1: Port2: Port3:
Access Default
K12R
036C H
076C H
0B6C H
0F6C 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
K2[7:0]
K1[7:0]
Bit Field
Function
Default
D31-
D16
Reserved
0
D15-D8
K2[7:0]
The receive K2 byte is stored.
0
D7-D0
K1[7:0]
The receive K1 byte is stored.
0
This register is updated when three contiguous frames containing the same K1 and K2 bytes are received after
the contents of the register are changed.
Содержание UPD98413
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