- 9 -
datasheet
DDR3L SDRAM
Rev. 1.01
Registered DIMM
8. Pinout Comparison Based On Module Type
NOTE : NC = No internal Connection
Pin
RDIMM
UDIMM
Signal
NOTE
Signal
NOTE
48, 49
VTT
Additional connection for Termination Voltage for
Address/Command/Control/Clock nets.
NC
Not used on UDIMMs
120, 240
VTT
Termination Voltage for Address/Command/Con-
trol/Clock nets.
VTT
Termination Voltage for Address/Command/Con-
trol/Clock nets.
53
Err_Out
Connected to the register on all RDIMMs NC Not
used on UDIMMs
NC
NC Not used on UDIMMs
63
NC
Not used on RDIMMs
CK1
Used for 2 rank UDIMMs, not used on single-rank
UDIMMs, but terminated
64
NC
CK1
68
Par_In
Connected to the register on all RDIMMs
NC
Not used on RDIMMs
76
S1
Connected to the register on all RDIMMs
S1
Used for dual-rank UDIMMs, not connected
on single-rank UDIMMs
77
ODT1, NC
Connected to the register on dual- and quadrank
RDIMMs; NC on single-rank RDIMMs
ODT1,NC
Used for dual-rank UDIMMs, not connected
on single-rank UDIMMs
79
S2, NC
Connected to the register on quad-rank
RDIMMs, not connected on single or dual rank
RDIMMs
NC
Not used on UDIMMs
167
NC
TEST input used only on bus analysis probes
NC
TEST input used only on bus analysis
probes
169
CKE1
Connected to the register on dual- and quadrank
RDIMMs; NC on single-rank RDIMMs
CKE1,
NC
Used for dual-rank UDIMMs, not connected
on single-rank UDIMMs
171
A15
Connected to the register on all RDIMMs
A15, NC
Depending on device density, may not be
connected to SDRAMs on UDIMMs. However,
these signals are terminated on
UDIMMs. A15 not routed on some RCs
172
A14
196
A13
198
S3, NC
Connected to the register on quad-rank
RDIMMs, not connected on single-or dual-rank
RDIMMs
NC
Not used on UDIMMs
39, 40, 45, 46,
158, 159, 164,
165
CBn
Used on all RDIMMs; (n = 0...7)
NC, CBn
Used on x72 UDIMMs, (n = 0...7); not
used on x64 UDIMMs
125, 134, 143,
152, 161, 203,
212, 221, 230
DQSn,
TDQSn
Connected to DQS on x4 SDRAMs,
TDQS on x8 SDRAMs on RDIMMs; (n = 9...17)
DMn
Connected to DM on x8 DRAMs, UDM or
LDM on x16 DRAMs on UDIMMs;
(n = 0...8)
126, 135, 144,
153, 162, 204,
213, 222, 231
DQSn,
TDQSn
Connected to DQS on x4 DRAMs, TDQS on x8
SDRAMs on RDIMMs; (n=9...17)
NC
Not used on UDIMMs
187
EVENT
NC
Connected to optional thermal sensing compo-
nent.
NC on Modules without a thermal sensing
component.
NC
Not used on UDIMMs