CY7C955-NC Cypress Semiconductor Corp, CY7C955-NC Datasheet - Page 44

• Manufacturer Part Number: CY7C955-NC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C955-NC

• Lead Free Status / RoHS Status: Not Compliant

REG
7
6
5
4
3
2
1
0
APTR[9:0]
Reg 45H and Reg 46H are the arbitrary payload pointer registers. This two registers are used to store the new payload pointer
value to be loaded into H1and H2 of the transmitted data stream. The value loaded into these 10 bits has to be greater than or
equal to zero and smaller than 782. A legal value stored in APTR[9:0] is not loaded into the data stream until PLD or FTPTR
is toggled HIGH.
REG
7
6
5
4
3
2
1
0
NDF[3:0]
These bits are used to store the arbitrary new data flag to be loaded into the transmit data stream. These bits are loaded when
NDF is toggled HIGH or when PLD is toggled HIGH.
S[1:0]
These 2 bits are inserted into the 2 unused bits of H1 whenever PLD, NDF, or FTPTR are toggled HIGH.
APTR[9:0]
Reg 45H and Reg 46H are the arbitrary payload pointer registers. This two registers are used to store the new payload pointer
value to be loaded into H1 and H2 of the transmitted data stream. The value loaded into these 10 bits has to be greater than
or equal to zero and smaller than 782. A legal value stored in APTR[9:0] is not loaded into the data stream until PLD or FTPTR
is toggled HIGH.
BIT POSITION
BIT POSITION
45H
46H
Transmit Path Overhead Processor Arbitrary Payload Pointer Register
APTR[7]
APTR[6]
APTR[5]
APTR[4]
APTR[3]
APTR[2]
APTR[1]
APTR[0]
Transmit Path Overhead Processor Arbitrary Payload Pointer Register
NDF[3]
NDF[2]
NDF[1]
NDF[0]
S[1]
S[2]
APTR[9]
APTR[8]
PRELIMINARY
NAME
NAME
44
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
READ/WRITE
READ/WRITE
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
CY7C955
DEFAULT
DEFAULT