PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Function
Pin Name
Type
Pin
No.
RDAT[31]
RDAT[30]
RDAT[29]
RDAT[28]
RDAT[27]
RDAT[26]
RDAT[25]
RDAT[24]
RDAT[23]
RDAT[22]
RDAT[21]
RDAT[20]
RDAT[19]
RDAT[18]
RDAT[17]
RDAT[16]
RDAT[15]
RDAT[14]
RDAT[13]
RDAT[12]
RDAT[11]
RDAT[10]
RDAT[9]
D30
E29
F28
G27
E30
F29
G28
H27
F30
H28
J27
G30
H29
J28
H30
J29
The UTOPIA receive cell data (RDAT[31:0]) bus carries the
ATM cell octets that are read from the receive FIFO.
Output
RDAT[31:0] is updated on the rising edge of RFCLK.
The POS-PHY receive packet data (RDAT[31:0]) bus carries
the POS packet octets that are read from the receive FIFO. The
RDAT[31:0] signals are valid when RVAL and RENB are
asserted.
RDAT[31:0] is updated on the rising edge of RFCLK.
K28
L27
J30
L28
M27
K30
L29
M28
L30
N27
M29
N28
M30
P27
N30
P28
RDAT[8]
RDAT[7]
RDAT[6]
RDAT[5]
RDAT[4]
RDAT[3]
RDAT[2]
RDAT[1]
RDAT[0]
Input
U28
The UTOPIA receive read enable (RENB) signal is used to
initiate reads from the receive FIFO. The system may de-assert
RENB at any time if it is unable to accept more data. A read is
not performed and RDAT[31:0] does not change when RENB is
sampled high. When RENB is sampled low, the word on the
RDAT[31:0] bus is read from the receive FIFO and RDAT[31:0]
changes to the next value on the next clock cycle.
RENB
RENB is sampled on the rising edge of RFCLK.
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
29
PMC [ PMC-SIERRA, INC ]
