CN8223 Datasheet, PDF (124/161 Pages) Conexant Systems, Inc – ATM Transmitter/Receiver with UTOPIA Interface

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