IDT82P2281 Datasheet, PDF (215/375 Pages) Integrated Device Technology – Single T1/E1/J1 Long Haul Short Haul Transceiver

IDT82P2281
SINGLE T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
T1/J1 RPLC Access Status (0CDH)
Bit No.
7
6
5
4
3
2
1
0
Bit Name
BUSY
Type
Reserved
R
Default
0
BUSY:
= 0: No reading or writing operation on the indirect registers.
= 1: An internal indirect register is being accessed. Any new operation on the internal indirect register is not allowed.
T1/J1 RPLC Access Control (0CEH)
Bit No.
7
6
5
4
3
2
1
0
Bit Name
RWN
ADDRESS6 ADDRESS5 ADDRESS4 ADDRESS3 ADDRESS2 ADDRESS1 ADDRESS0
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
RWN:
= 0: Write the data to the specified indirect register.
= 1: Read the data to the specified indirect register.
ADDRESS[6:0]:
These bits specify the address of the indirect register (from 01H to 18H & from 21H to 38H & from 41H to 58H) for the microprocessor access.
T1/J1 RPLC Access Data (0CFH)
Bit No.
7
6
5
4
3
2
1
0
Bit Name
D7
D6
D5
D4
D3
D2
D1
D0
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
D[7:0]:
This register holds the value which will be read from or written into the indirect registers (from 01H to 18H & from 21H to 38H & from 41H to 58H).
If data is to be written into the indirect register, this register must be written before the target indirect register’s address and RWN=0 is written into the
RPLC Access Control register. If data is to be read from the indirect register, the target indirect register’s address and RWN=1 must be written into the
RPLC Access Control register first, then this register will contain the requested data byte.
Programming Information
204
October 7, 2003