參數(shù)資料
型號: T9000
英文描述: ISDN Network Termination Node (NTN) Device
中文描述: ISDN網(wǎng)絡(luò)終端節(jié)點(新界北)設(shè)備
文件頁數(shù): 79/126頁
文件大?。?/td> 2127K
代理商: T9000
Lucent Technologies Inc.
79
Preliminary Data Sheet
November 2000
ISDN Network Termination Node (NTN) Device
T9000
10 GCI+ Interface Module
(continued)
10.7 GCI+ Register Set
Table 80. GCCF: GCI+ Configuration Register (0x2E)
Reg
GCCF
RESET
R/W
R/W
Default
Bit 7
Bit 6
PFSDEL
0
Bit 5
PFSPE
0
Bit 4
Bit 3
GRATE1
0
Bit 2
GRATE0
0
Bit 1
GMODE1 GMODE0
0
Bit 0
GDRIVER
0
CKMODE
0
0
Bit #
7
Symbol
GDRIVER
Name/Description
GCI+ Driver Type.
Sets the type of output driver to be used for the GCI+ signal DD.
0: Open-drain driver.
1: Push-pull driver.
PFS Delay.
Sets the relative delay between PFSx (x = 1 or x = 2) and the first data bit of
the time slot associated with PFSx.
6
PFSDEL
0: PFSx rising edge is coincident with the start of the corresponding time slot.
1: PFSx rising edge occurs one bit time before the start of the corresponding time
slot.
PFS Pulse (Short Frame Sync) or Envelope (Long Frame Sync) Mode.
Sets the
duration of the PFSx (x = 1 or x = 2) pulse.
5
PFSPE
0: PFS is an 8-bit envelope lasting from one time slot minus one-half of a DCL period.
1: PFS lasts for one data bit time.
GCI+ Data Clock Mode.
Sets the clock mode of the GCI+ DCL clock to single or double
clock mode when in TDM mode. This bit is ignored in GCI mode.
4
CKMODE
0: DCL set to double clock mode (two clocks per data bit).
1: DCL set to single clock mode (one clock per data bit).
GCI+ Clock Rate.
Sets the DCL clock rate when in TDM mode. In GCI mode
(GMODE[1:0] = 0x), these bits are ignored,
unless
they are equal to 00.
3—2
GRATE[1:0]
00: Clock disabled.
01: 512 kHz.
10: 1.536 MHz.
11: 2.048 MHz.
GCI+ Operation Mode.
Sets the mode of operation of the GCI+ Interface. When in either
of the GCI modes (GMODE[1:0] = 0x), these bits override the GRATE[1:0] values,
unless
GRATE[1:0] = 00.
1—0
GMODE[1:0]
00: GCI-NT mode.
01: GCI-TE mode.
1x: TDM mode.
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