HYR166420G-845 Datasheet, PDF (10/14 Pages) Infineon Technologies AG – Direct RDRAM RIMM Modules (with 144 Mbit RDRAMs)

HYR 16xx20G/HYR 18xx20G
Rambus RIMM Modules
AC Electrical Specifications
Symbol Parameter and Conditions
Z
Module Impedance
T_PD
Average clock delay from finger of all RSL clock
nets (CTM, CTMN, CFM and CFMN)
∆T_PD
∆T_PD-CMOS
Propagation delay variation of RSL signals with
respect to T_PD2)3 ⁾ for 4 and 8 device modules
Propagation delay variation of RSL signals with
respect to T_PD2)3 ⁾ for 16 device modules
Propagation delay variation of SCK and CMD
signals with respect to an average clock delay²⁾
V_A/V_IN
Attenuation Limit
V_XF/V_IN
V_XB/V_IN
Forward crosstalk coefficient
(300 ps input rise time @ 20%-80%)
Backward crosstalk coefficient
(300 ps input rise time @ 20%-80%)
Limit Values
Unit
min. typ. max.
25.2 28
30.8 Ω
–
–
See ns
Table¹⁾
– 21 –
21
ps
– 24 –
24
ps
– 100 –
100 ps
–
–
See %
Table¹⁾
–
–
See %
Table¹⁾
–
–
See %
Table¹⁾
1) Table below lists parameters and specifications for different storage capacity RIMM Modules that use
144 MBbit RDRAM devices.
2) Average clock delay is defined as the average delay from finger to finger of all RSL clock nets (CTM, CTMN,
.....CFM and CFMN).
3.) If the RIMM module meets the folowwing specifications, then it is compliant to the specification. If the RIMM
.....module does not meet these specifications, then the specification can be adjusted by the “Adjusted ∆T_PD-
.....Specification” table.
Adjusted ∆T_PD Specfication
Symbol
Parameter and Conditions
Adjusted Min/Max
Absolute
Unit
Min /Max
Propagation delay variation of RSL signals
with respect to T_PD for 4 and 8 device modules ^{+/-[17+(18*N*∆Z0)]a -30}
∆T_{PD Propagation delay variation of RSL signals}
with respect to T_PD for 16 device modules
+/-[24+(18*N*∆Z0)] -50
30 ps
50 ps
a) Where:
N = Nuber of RDRAM devices installed on the RIMm module
DZ0 = delta Z0% =(max Z0 - minZ0)/(min Z0)
(max Z= and min Z0 are obtained from the loaded (high impedance) impedance coupons of all RSL layers on the
modules)
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