Rainbow Electronics TS81102G0 - Manual (Page 18)

18
TS81102G0
2105C–BDC–11/03
With a nominal tuning of DMUXDelAdj, at 1 GHz (1:4 mode) d1 data is lost because of the
internal clock’s path propagation delay TCPD. TCPD is tuned with DMUXDelAdjCtrl pins and
is used to obtain good setup and hold times between Clkln and the input data.
Figure 14. Start with Asynchronous Reset, 1:4 Ratio, DR Mode
With a nominal tuning of DMUXDelAdj, at 1 GHz (1:4 mode) d1 data is lost because of the
internal clock’s path propagation delay TCPD. TCPD is tuned with DMUXDelAdjCtrl pins and
is used to obtain good setup and hold times between Clkln and the input data. This timing dia-
gram does not change with the opposite phase of Clkln.
Figure 15. Start with Asynchronous Reset, 1:4 Ratio, DR/2 Mode
TRAR
PWAR
TFAR
Clkn
ASyncReset
Internal Port Selection
(not available out of the DEMUX)
A B C D
d1 d2 d3 d4 d5 d6 d7 d8
d5
d6
d7
d8
d2
d3
d4
B A C D
TPD
TCPD
TOD
TRDR TFDR
TROD/TFOD
TOD
TDRF TDRR TDRR TARDR
I[0..9]
A[0..9]
B[0..9]
C[0..9]
D[0..9]
DR
TRAR
PWAR
TFAR
Clkn
ASyncReset
Internal Port Selection
(not available out of the DEMUX)
A B C D
d1 d2 d3 d4 d5 d6 d7 d8
d5
d6
d7
d8
d2
d3
d4
B A C
TPD
TCPD
TOD
TRDR TFDR
TROD/TFOD
TOD
TDRF
TCPD
TDRR TARDR
I[0..9]
A[0..9]
B[0..9]
C[0..9]
D[0..9]
DR