T9000
Preliminary Data Sheet
November 2000
ISDN Network Termination Node (NTN) Device
10 GCI+ Interface Module (continued)
10.7 GCI+ Register Set (continued)
Table 88. GCIR: GCI Interrupt Register (0x36)
Reg
R/W
Bit 7
GWUP
0
Bit 6
UCIC
0
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
GCIR
R
UMRDY UMEOM UMABRT DMRDY DMEOM DMABRT
RESET Default
0
0
0
0
0
0
Note: All bits in this register are set to 1 upon occurrence of the corresponding interrupt condition, and are cleared
to 0 when the register is read.
Bit #
Symbol
Name/Description
7
GWUP
GCI Wake-Up Interrupt. This interrupt occurs when the following two conditions are true:
1. GCI clocks are stopped (GCCF[GRATE(1:0)] = 00).
2. A falling edge of DU occurs.
6
5
4
3
2
1
0
UCIC
Upstream Command/Indication Change. This interrupt occurs upon the reception of a
new, validated C/I code in register GCUCI. At reset, the internal C/I code is set to 111111.
UMRDY Upstream Monitor Byte Ready. This interrupt occurs when a newly received monitor byte
is available in register GCUMD.
UMEOM Upstream Monitor End of Message. This interrupt occurs when the last byte of a monitor
message has been successfully received.
UMABRT Upstream Monitor Aborted. This interrupt occurs when an abort has been detected in the
received monitor message.
DMRDY Downstream Monitor Ready. This interrupt occurs to indicate that the downstream monitor
buffer is empty and a new byte may be loaded into GCDMD or GCDML.
DMEOM Downstream End of Message. This interrupt occurs when the far end acknowledges the
successful reception of the last byte of a downstream message.
DMABRT Downstream Monitor Aborted. This signal is asserted when, during the transmission of a
downstream monitor message, a request to abort has been received from the downstream
device.
Lucent Technologies Inc.
83
AGERE [ AGERE SYSTEMS ]
