UTOPIA16EVK/NOPB National Semiconductor, UTOPIA16EVK/NOPB Datasheet - Page 58

• Manufacturer Part Number: UTOPIA16EVK/NOPB
• Manufacturer: National Semiconductor

Specifications of UTOPIA16EVK/NOPB

• Lead Free Status / Rohs Status: Compliant

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18.0 Register Description
Type:
Software Lock: No
Reset Value:
The Receive Port B Expected Link Label register defines the expected contents of the Link Trace Label byte received in TC6 on
receive Port B. If the actual received value, as stored in the RBLL register is not the same as the expected value defined here
the RBLLM alarm bit in the RBLA register is set, which may raise a processor interrupt if the corresponding interrupt enable is set.
18.42 RECEIVE PORT B LOCAL ALARMS — 0x62 RBLA
Type:
Software Lock: No
Reset Value:
The Receive Port B Local Alarms register contains information on the status of the Port B disassembler. When set, RBLLC,
RBLLM, RBLDSLL, RBLTCLL, and RBLFLL will raise an interrupt if the corresponding interrupt enable bits are set. Also, a change
in value on RBLDSLL, RBLTCLL and RBLFLL will set the RBLCS bit, which will raise an interrupt if the corresponding interrupt
enable bit is set.
The ERBBF register bit indicates that the ECC receive section for Port B has successfully received a full ECC message consisting
of the 8 data bytes contained in registers ERBD7–ERBD0 and a the message can now be read by the processor.
On reset, the ERBBF will be clear indicating no valid message has been received. When a valid message is received and stored
in the ERBD7–ERBD0 data registers, the ERBBF bit will be set and will raise an interrupt if the corresponding interrupt enable
bit is set. Therefore, the processor can detect a received message on the interrupt or by polling the ERBBF bit. When the
processor has finished reading the message from the ERBD7–ERBD0 data registers and is ready to receive a new message, it
simply clears the ERBBF bit. When a full message has been successfully received, this is communicated to the far-end device
via the ECC signalling.
18.43 RECEIVE PORT B LOCAL INTERRUPT ENABLES — 0x63 RBLIE
Type:
Software Lock: No
Reset Value:
This register contains the interrupt enables for the alarms in the RBLA register. Set = interrupt enabled and Clear = interrupt
disabled.
18.44 RECEIVE PORT B CONTROL — 0x64 RBCTL
• RBELL[7:0] Port B Expected Received Link Trace Label byte contents.
• RBLLC Receive Port B, Local Link Label Change of Status. Set = Change in RBLL register value.
• RBLLM Receive Port B, Local Link Label Mismatch. Set = Received link label RBLL different than expected link label RBELL.
• RBLCS Receive Port B, Local Change of Status. Set = change in value of RBLDSLL, RBLTCLL or RBLFLL bits.
• RBLDSLL Receive Port B, Local Descrambler Loss of Lock. Set = Out of Lock and Clear = Lock.
• RBLTCLL Receive Port B, Local Transport Container Delineation Loss of Lock. Set = Out of Lock and Clear = Lock.
• RBLFLL Receive Port B, Local Frame Delineation Loss of Lock. Set = Out of Lock and Clear = Lock.
• ERBBF The ERBBF bit, when set, indicates that ERBD7–ERBD0 data registers contain a full valid received message. The
data in the ERBD7–ERBD0 data registers cannot be overwritten with a new received message while ERBBF is set. When
ERBBF is cleared, this allows the ERBD7–ERBD0 data registers to be overwritten with a new received message.
Reserved
Reserved
Reserved
7
7
7
Read/Write
0x00
Bits[6:1] Read only/Clear on Read
Bit[0] Read/Write
0x00
Read/Write
0x00
Reserved
RBLLCIE
RBLLC
6
6
6
RBLLMIE
Reserved
RBLLM
5
5
5
(Continued)
RBLCSIE
Reserved
RBLCS
TABLE 64. RBCTL
TABLE 63. RBLIE
TABLE 62. RBLA
4
4
4
58
RBLSLLIE
RBLDSLL
RBESS
3
3
3
RBLTCLLIE
RBLTCLL
RBBEC
2
2
2
RBLFLLIE
RBDFLK
RBLFLL
1
1
1
ERBBFIE
RBCDIS
ERBBF
0
0
0