3.0 Registers
CN8223
3.7 Status Register Overview
ATM Transmitter/Receiver with UTOPIA Interface
0x3B—CELL_STATUS (Interrupt Status Register)
The CELL_STATUS register is located at address 0x3B.
Field
Size
Bit
15
Name
Description
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Cell Sent Cntr Ovfl–Port 3
Cell Sent Cntr Ovfl–Port 2
Cell Sent Cntr Ovfl–Port 1
Cell Sent Cntr Ovfl–Port 0
Cell Rcvd Cntr Ovfl-Port 3
Cell Rcvd Cntr Ovfl-Port 2
Cell Rcvd Cntr Ovfl-Port 1
Cell Rcvd Cntr Ovfl-Port 0
Cell Rcvd–Port 3
Set if the CELL_SENT_CNT3 counter overflows.
Set if the CELL_SENT_CNT2 counter overflows.
Set if the CELL_SENT_CNT1 counter overflows.
Set if the CELL_SENT_CNT0 counter overflows.
Set if the CELL_RCV_CNT3 counter overflows.
Set if the CELL_RCV_CNT2 counter overflows.
Set if the CELL_RCV_CNT1 counter overflows.
Set if the CELL_RCV_CNT0 counter overflows.
Enables port 3 header match interrupt.
14
13
12
11
10
9
8
7
Cell Rcvd–Port 2
Enables port 2 header match interrupt.
6
Cell Rcvd–Port 1
Enables port 1 header match interrupt.
5
Cell Rcvd–Port 0
Enables port 0 header match interrupt.
4
Cell Sent–Port 3
Set when a cell is transmitted from port 3.
Set when a cell is transmitted from port 2.
Set when a cell is transmitted from port 1.
Set when a cell is transmitted from port 0.
3
Cell Sent–Port 2
2
Cell Sent–Port 1
1
Cell Sent–Port 0
0
0x3C—RXFEAC_VER (Receive FEAC/Part Number/Version Number Register)
The RXFEAC_VER register is located at address 0x3C. The lower 8 bits have fixed values. Programming of the
FEAC channel and use of these interrupts is discussed in Section 2.8.
Field
Size
Bit
Name
Description
15–10
6
1
Receive FEAC Data
Contains the data received by the FEAC receiver.
9
Receive FEAC
Interrupt
Indicates that the interrupt on the DL_INT pin was from the FEAC receiver when the
internal DS3 framer is enabled.
8
1
Transmit FEAC
Interrupt
Indicates that the interrupt on the DL_INT pin was from the FEAC transmitter when
the internal DS3 framer is enabled.
7–4
3–0
4
4
Part Number
Fixed value is E (1110).
Version Number
Provides the version number of the part. CN8223 = 1 (0001)
3-38
Conexant
100046C
CONEXANT [ CONEXANT SYSTEMS, INC ]
