EBR51UC8ABFD

Data Sheet E0316E21 (Ver. 2.1)

4

Module Connector Pad Description

Signal

Module

Connector Pads

I/O

Type

Description

GND

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

—

—

Ground reference for RDRAM core and interface. 72

PCB connector pads.

LCFM

B10

I

RSL

Clock from master. Interface clock used for receiving

RSL signals from the Channel. Positive polarity.

LCFMN

B12

I

RSL

Clock from master. Interface clock used for receiving

RSL signals from the Channel. Negative polarity.

LCMD

B34

I

VCMOS

Serial Command used to read from and write to the

control registers. Also used for power management.

LCOL4..LCOL0

A20, B20, A22, B22, A24

I

RSL

Column bus. 5-bit bus containing control and address

information for column accesses.

LCTM

A14

I

RSL

Clock to master. Interface clock used for transmitting

RSL signals to the Channel. Positive polarity.

LCTMN

A12

I

RSL

Clock to master. Interface clock used for transmitting

RSL signals to the Channel. Negative polarity.

LDQA8..LDQA0

A2, B2,A4, B4, A6, B6, A8,

B8, A10

I/O

RSL

Data bus A. A 9-bit bus carrying a byte of read or write

data between the Channel and the RDRAM.

LDQB8..LDQB0

B32, A32, B30, A30, B28,

A28, B26, A26, B24

I/O

RSL

Data bus B. A 9-bit bus carrying a byte of read or write

data between the Channel and the RDRAM.

LROW2..LROW0

B16, A18, B18

I

RSL

Row bus. 3-bit bus containing control and address

information for row accesses.

LSCK

A34

I

VCMOS

Serial clock input. Clock source used to read from and

write to the RDRAM control registers.

NC

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 24 connector

pads are reserved for future use.

RCFM

B83

I

RSL

Clock from master. Interface clock used for receiving

RSL signals from the Channel. Positive polarity.

RCFMN

B81

I

RSL

Clock from master. Interface clock used for receiving

RSL signals from the Channel. Negative polarity.

RCMD

B59

I

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

RSL

Column bus. 5-bit bus containing control and address

information for column accesses.

RCTM

A79

I

RSL

Clock to master. Interface clock used for transmitting

RSL signals to the Channel. Positive polarity.

RCTMN

A81

I

RSL

Clock to master. Interface clock used for transmitting

RSL signals to the Channel. Negative polarity.

RDQA8..RDQA0

A91, B91, A89, B89, A87,

B87, A85, B85, A83

I/O

RSL

Data bus A. A 9-bit bus carrying a byte of read or write

data between the Channel and the RDRAM.

RDQB8..RDQB0

B61, A61, B63, A63, B65,

A65, B67, A67, B69

I/O

RSL

Data bus B. A 9-bit bus carrying a byte of read or write

data between the Channel and the RDRAM.

RROW2..RROW0

B77, A75, B75

I

RSL

Row bus. 3-bit bus containing control and address

information for row accesses.