MSC8144ADS Freescale, MSC8144ADS Datasheet - Page 26

• Manufacturer Part Number: MSC8144ADS
• Manufacturer: Freescale

Specifications of MSC8144ADS

• Lead Free Status / RoHS Status: Compliant

ADS Functional Description
When the DDR1 module is inserted in the DDR interposer, the DDR pinout causes the MSC8144
to be signalled to supply its 2.6 V voltage.
5.1.4 Power for DDR Devices
The synchronous buck controller TPS51116 by TI provides a complete power supply for both the
DDR1 and DDR2 memory devices. The VDDQSET input pin selects the voltage for DDR2 or
DDR1. Available modes are shown in Table 5-1. The SPD Serial I
DDR2 SODIMM is powered from the system 3.3 V power source..
5-2
(GND on SODIMM)
(NC on SODIMM)
18 Ω
DDR_VDD
VDDQSET
GND
18 Ω
5 V
MDIC1
MDIC0
VDD DDR
MSC8144
ECC_MDQS
ECC_MDQS
MDQS[3–0]
MDQS[3–0]
MECC[7–0]
ECC_MDM
MDQ[31–0]
MDM[3–0]
MBA[1–0]
MA[15–0]
MCKEN0
ODT[1–0]
Capacitors 24pF for improving eye diagram
Vref
Table 5-1. VDDQSET and Output Voltage
MCS0
MCS1
MCAS
MRAS
MBA2
MCK0
MCK0
MCK1
MCK1
MWE
Figure 5-1. DDR2 SODIMM Interconnection
VDDQ
2.6 V
1.8 V
MSC8144ADS MSC8144, Rev. 0
Vref
1.8 V/2.6 V
5pF
5pF
*
*
(DDR1 SODIMM)
DQ[8–15]
DDR2 SODIMM
CK1
DQ Lanes 2,3,4,6
DQ Lanes 0,5,7
DQS[2,3,4,6]
DQS[2,3,4,6]
DQS[0,5,7]
DQS[0,5,7]
MDM[2,3,4,6]
MDM[0,5,7]
CS0
CS1
CAS
RAS
WE
MBA[1–0]
A[15–0]
CK0
CK0
CK1
CKEN0
MDM1
DQS1
DQS1
ODT[1–0]
Vref
NC/GND
122
V
V
VTTREF & VTT
DDR_VDD
VDDQ
VDDQ
Rt
/2 = 1.3 V
/2 = 0.9 V
2
DDR_VDD
C EEPROM mounted on the
0.9 V/1. V
VTT
VREF
VDD
Freescale Semiconductor
VDDQSET
TPS51116
TPS51116
Memory System
DDR1
DDR2
12 V
5 V