Rev. 0.95 / July.01 4
RIMM Module
with 256/288Mb RDRAMs Preliminary
TM
Table 3: Module Connector Pad Description
Module Connector Pads I/OSignal Type Description
A1, A3, A5, A7, A9, A11, A13, A15,
A17, A19, A21, A23, A25, A27, A29,
A31, A33, A39, A52, A60, A62, A64,
A66, A68, A70, A72, A74, A76, A78,
A80, A82, A84, A86, A88, A90, A92,
B1, B3, B5, B7, B9, B11, B13, B15,
B17, B19, B21, B23, B25, B27, B29,
B31, B33, B39, B52, B60, B62, B64,
B66, B68, B70, B72, B74, B76, B78,
B80, B82, B84, B86, B88, B90, B92
Gnd Ground reference for RDRAM core and interface.
72 PCB connector pads.
B10 I
LCFM RSL Clock from master. Interface clock used for receiving
RSL signals from the Channel. Positive polarity.
B12 I
LCFMN RSL Clock from master. Interface clock used for receiving
RSL signals from the Channel. Negative polarity.
B81 I
RCFMN RSL Clock from master. Interface clock used for receiv-
ing RSL signals from the Channel. Negative polar-
ity.
B34 I
LCMD VCMOS Serial Command used to read from and write to the
control registers. Also used for power management.
A20, B20, A22, B22, A24 I
LCOL4..
LCOL0 RSL Column bus. 5-bit bus containing control and address
information for column accesses.
A14 I
LCTM RSL Clock to master. Interface clock used for transmit-
ting RSL signals to the Channel. Positive polarity.
A12 I
LCTMN RSL Clock to master. Interface clock used for transmit-
ting RSL signals to the Channel. Negative polarity.
A2, B2, A4, B4, A6, B6, A8, B8, A10 I/O
LDQA8..
LDQA0 RSL Data bus A. A 9-bit bus carrying a byte of read or
write data between the Channel and the RDRAM.
LDQA8 is non-functional on x16 RDRAM devices.
B32, A32, B30, A30, B28, A28, B26,
A26, B24 I/O
LDQB8..
LDQB0 RSL Data bus B. A 9-bit bus carrying a byte of read or
write data between the Channel and the RDRAM.
LDQB8 is non-functional on x16 RDRAM devices.
B16, A18, B18 I
LROW2..
LROW0 RSL Row bus. 3-bit bus containing control and address
information for row accesses.
A34 I
LSCK VCMOS Serial Clock input. Clock source used to read from
and write to the RDRAM control registers.
A16, B14, A38, B38, A40, B40, A77,
B79
NC These pads are not connected. These 8 connector
pads are reserved for future use.
A43, B43, A44, B44, A45, B45, A46,
B46, A47, B47, A48, B48, A49, B49,
A50, B50
NC These pads are not connected. These 16connector
pads art reserved for future use. The 168 contact
RIMM connector does not connect to these PCB
pads.
B83 I
RCFM RSL Clock from master. Interface clock used for receiv-
ing RSL signals from the Channel. Positive polarity.