NEC UPD98413 User Manual page 203

(30) Receive POS Mode register (MDPOSR)
The MDPOSR register sets the modes related to receive POS operation.
Register
Name
Port0:
MDPOSR 0090 H
31 30 29 28
15 14 13 12
Reserved
Bit Field
D31- Reserved Set to 0.
D10
HALTM
D9 Sets the HALT mode.
PSCM
D8 Controls descramble of a packet.
1: Not descramble
D7 LPM Controls the check function of receive long size packet.
1: Disabled.
0: Checks long size packet.
D6 SPM Controls the check function of receive short size packet.
1: Disabled.
0: Checks short size packet.
D5 FCSPAS Selects if the receive FCS is passed through the POS interface or stripped.
1: FCS is passed.
0: FCS is stripped.
D4 FCSLM Selects the FCS calculation order whether it is calculated from the LSB or MSB of
the receive packet.
D3 FCSSZ Selects the receive FCS length.
D2 FCSM Controls the check function of FCS field in the receive packet.
1: Disabled. FCS field are not checked in the receive packet.
0: Checks FCS field. If FCS error occurs, the error is indicated by RERR signal.
D1 ADRPAS Selects if the receive Address and Control fields is passed through the POS
interface or stripped when the Address and Control check is enabled and no error.
1: Address and Control fields is passed.
0: Address and Control fields is stripped.
D0 ADRM Controls the check function of Address and Control fields in the receive packet.
1: Disabled. Address and Control fields are not checked in the receive packet.
0: Checks Address and Control fields. If Address and Control errors occur, the
CHAPTER 5 REGISTERS
Address
Port1: Port2: Port3:
0490 H 0890 H 0C90 H
27 26 25 24
Reserved
11 10 9 8
HALTM PSCM
1: HALT mode 0: Normal operation
0: Descramble
1: MSB first 0: LSB first
1: 16 bits 0: 32 bits
packet is dropped and the error is indicated by interrupt.
PRELIMINARY
Access Default
R/W 00000000 H
23 22 21 20
7 6 5 4
LPM SPM FCSPAS FCSLM FCSSZ
Function
19 18 17 16
3 2 1 0
FCSM ADRPAS ADRM
Default
0
0
0
0
0
0
0
0
0
0
0
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203