PM7344 S/UNI-MPH
DATA SHEET
PMC-950449
ISSUE 6
MULTI-PHY USER NETWORK INTERFACE
Pin Name
Type
Pin Function
No.
MPHEN
Input
109 Multiphy Enable (MPHEN). This input selects
the configuration of the receive and transmit cell
interfaces. When MPHEN is high, the cell
interfaces are configured for multi-phy
addressing and signals TWRMPHB, TWA[1:0],
TCAMPH, RRDMPHB, RRA[1:0], and RCAMPH
are active. When MPHEN is low, the cell
interfaces are configured for direct phy selection
and signals TWRENB[4:1] and RRDENB[4:1]
are active.
RFCLK
Input
74
Receive FIFO Read Clock (RFCLK). This signal
is used to read ATM cells from the receive
FIFOs. RFCLK must cycle at a 25 MHz or lower
instantaneous rate, but at a high enough rate to
avoid FIFO overflow.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
25
PMC [ PMC-SIERRA, INC ]
