HYR 16xx30G/HYR 18xx20G
Rambus RIMM Modules
Module Connector Pad Description (cont’d)
Signal
Module Connector Pads I/O
Type
Description
LDQB8 …
LDQB0
B32, A32, B30, A30, B28, I/O
A28, B26, A26, B24
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
modules with x16 RDRAM devices.
LROW2 …
LROW0
B16, A18, B18
A34
I
RSL
VCMOS
–
Row bus. 3-bit bus containing
control and address information for
row accesses.
LSCK
N.C.
I
Serial Clock input. Clock source
used to read from and write to the
RDRAM control registers.
A16, B14, A38, B38, A40,
B40, A77, B79;A43, B43,
A44, B44, A45, B45, A46,
B46, A47, B47, A48, B48,
A49, B49, A50, B50
–
These pads are not connected.
These connector pads are reserved
for future use.
RCFM
RCFMN
RCMD
B83
B81
B59
I
I
I
RSL
Clock from master. Interface clock
used for receiving RSL signals from
the Channel. Positive polarity.
RSL
Clock from master. Interface clock
used for receiving RSL signals from
the Channel. Negative polarity.
VCMOS
Serial Command Input used to read
from and write to the control
registers. Also used for power
management.
RCOL4 …
RCOL0
A73, B73, A71, B71, A69
I
I
I
RSL
RSL
RSL
RSL
Column bus. 5-bit bus containing
control and address information for
column accesses.
RCTM
A79
A81
Clock to master. Interface clock
used for transmitting RSL signals to
the Channel. Positive polarity.
RCTMN
Clock to master. Interface clock
used for transmitting RSL signals to
the Channel. Negative polarity.
RDQA8 …
RDQA0
A91, B91, A89, B89, A87, I/O
B87, A85, B85, A83
Data bus A. A 9-bit bus carrying a
byte of read or write data between
the Channel and the RDRAM.
RDQA8 is non-functional on
modules with x16 RDRAM devices.
Data Book
6
2.00