NDA-24296 CHAPTER 3
Page 239
Revision 1.0
PH-CK18
Clock

PH-CK18

Clock

1. General Function
This ci rcui t card is us ed for the Local Node (LN) of the IPX-U system o r used for the Local Module Group
(LMG) of the IPX-UMG system. The main function of this circuit card is to supply basic clock signals to
the system. This card receives clock signals from the Phase Lock Oscillator (PLO) located in T SW M0 of
IMG1/5/9/1 3, dis tributi ng the fol lowing signal s to the Time Divis ion Switc h (TS W) located in TSWM1 of
IMG2/6/10/14.
32.768 MHz CLK
8 KHz FH
5 m s ec × n FH (for Wireless System)
Figure 3-35 Location of PH-CK18 (C LK)
LN0/LMG0
(IMG2/IMG3) LN3/LMG3
(IMG2/IMG3 )
/(IMG14/IMG15)
32M, FH+WFH
PLO ACT 32M, FH +WFH
PLO ACT
CLK1
(TSWM1)
TSW
10~13
CLK0
(TSWM1)
TSW
00~03
MUX
(System1)
MUX
(System0)
LC/TRK
HSW00
ISW
HSW01
CLK1
(TSWM1)
TSW
10~13
CLK0
(TSWM1)
TSW
00~03
MUX
(System1)
MUX
(System0)
LC/TRK
LN0/LMG0
(IMG0/IMG1)
from
LN/LMG D TI from
LN/LMG DTI
32M, FH+WFH
PLO ACT
32M, FH+WFH
PLO ACT
(BWB)
32M, FH+WFH
PLO ACT
(BWB)
64K+FH, WFH
TSW ACT
(Cable)
64K+FH, WFH
TSW A CT
(Cable)
PLO 1
(TSWM0)
TSW
10~13
PLO 0
(TSWM0)
TSW
00~03
MUX
(System1)
MUX
(System0)
LC/TRK
LN3/LMG3
(IMG0/IMG1 )
/(IMG12/IMG13) 32M , FH+WFH
PLO ACT
PLO 1
(TSWM0)
TSW
10~13
PLO 0
(TSWM0)
TSW
00~03
MUX
(System1)
MUX
(System0)
LC/TRK
TSW00 TSW03
HSW10
OSC 64K+8K
(BWB)
(BWB)
CL K, FH, WF H
ACT, AL M
PLO 0
DTI0 DCS0 (MDF) DCS1123
PLO 1
SEL
PLL
Drv
HSW11
TSW10 TSW13
SEL
PLL
Drv
OSC

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