T9000
Preliminary Data Sheet
November 2000
ISDN Network Termination Node (NTN) Device
10 GCI+ Interface Module (continued)
10.3 GCI-NT Mode (GCCF[GMODE(1:0)] = 00) (continued)
GCI-NT FRAME (125 µs)
DCL
BCLK
FS1(FSC)
DD
DU
B1
B1
B2
B2
MON (OUT)
MON (IN)
C/I
C/I
A
A
E
E
TIMESLOT1
0
1
2
3
5-6721 (F)
1. Not an output. Shown only for reference.
Note: GCCF[GMODE] = 00 (GCI-NT); DCL = 512 kHz; data rate = 256 kHz.
Figure 16. GCI-NT Frame Structure
Figure 17 shows the generation of PFS1/PFS2 signals, assuming GCOF1[OFF10] = 0.
DCL
BCLK1
SYNC2
BITSLOT2
CHANNELSLOT2
FSC
?
?
0
1
2
3
4
5
6
7
0
?
0
1
PFS11
A
PFS2
PFS11
B
PFS2
PFS11
C
PFS2
PFS11
D
PFS2
5-6718 (F)
1. Only present if programmed on GPAF1 register.
2. Not outputs. Shown only for reference.
Note: GMODE = 00; CKRATE ≠ 00; GKMODE = X; OFF1 (0) = 0.
Key:
A: PFSDEL = 0 and PFSPE = 0
B: PFSDEL = 0 and PFSPE = 1
C: PFSDEL = 1 and PFSPE = 0
D: PFSDEL = 1 and PFSPE = 1
?: Don’t care
Figure 17. GCI-NT Timing Diagram
74
Lucent Technologies Inc.
AGERE [ AGERE SYSTEMS ]
