RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
Pin Name
RATM_CLK/ TPHY_CLK
Type
Pin No.
Function
Input
R1
ATM: Receive UTOPIAATM Layer
Clock is the synchronization clock
input for synchronizing the RATM
interface.
PHY: Transmit UTOPIA/Any-PHY
PHY Layer Clock is the
synchronization clock input for
synchronizing the TPHY interface.
Maximum frequency is 52 MHz.
RATM_SOC/ TPHY_SOC
/TSOP
Input
P1
This signal has two definitions
depending on whether the UTOPIA
is in ATM mode or PHY mode.
ATM: Receive UTOPIAATM Layer
Start-Of-Cell is an active high signal
asserted by the PHY layer when
RATM_D contains the first valid byte
of a cell.
PHY: Transmit UTOPIA/Any-PHY
PHY Layer Start-Of-Cell is an active
high signal asserted by the ATM
layer when TPHY_D contains the
first valid byte of a cell.
Any-PHY: This pin is the Transmit
Start of Packet (TSOP) signal which
functions just like TPHY_SOC. .
This signal is optional in this mode.
If unused, tie low.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
40
PMC [ PMC-SIERRA, INC ]
