
RELEASED
DATA SHEET
PM7380 FREEDM-32P672
ISSUE 5
PMC-1990262
FRAME ENGINE AND DATA LINK MANAGER 32P672
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
18
Pin Name
Type
Pin
No.
Function
TCLK[0]
TCLK[1]
TCLK[2]
TCLK[3]
TCLK[4]
TCLK[5]
TCLK[6]
TCLK[7]
TCLK[8]
TCLK[9]
TCLK[10]
TCLK[11]
TCLK[12]
TCLK[13]
TCLK[14]
TCLK[15]
TCLK[16]
TCLK[17]
TCLK[18]
TCLK[19]
TCLK[20]
TCLK[21]
TCLK[22]
TCLK[23]
TCLK[24]
TCLK[25]
TCLK[26]
TCLK[27]
TCLK[28]
TCLK[29]
TCLK[30]
TCLK[31]
Input
W21
Y23
Y21
AA23
AB22
AC23
AA21
AB21
AB20
AC19
AC18
AC17
AB17
AC16
AA16
Y15
AB14
Y13
AA13
AB12
AA11
AC11
AA10
AC10
AC9
AB8
AA7
Y7
AB6
AA6
AA5
AC4
The transmit line clock signals (TCLK[31:0])
contain the transmit clocks for the 32
independently timed links. Processing of
the transmit links is on a priority basis, in
descending order from TCLK[0] to
TCLK[31]. Therefore, the highest rate link
should be connected to TCLK[0] and the
lowest to TCLK[31].
For channelised T1/J1 or E1 links, TCLK[n]
must be gapped during the framing bit (for
T1/J1 interfaces) or during time-slot 0 (for
E1 interfaces) of the TD[n] stream. The
FREEDM-32P672 uses the gapping
information to determine the time-slot
alignment in the transmit stream.
For unchannelised links, TCLK[n] must be
externally gapped during the bits or time-
slots that are not part of the transmission
format payload (i.e. not part of the HDLC
packet).
TCLK[2:0] is nominally a 50% duty cycle
clock between 0 and 51.84 MHz.
TCLK[31:3] is nominally a 50% duty cycle
clock between 0 and 10 MHz. Typical
values for TCLK[31:0] include 1.544 MHz
(for T1/J1 links) and 2.048 MHz (for E1
links).
The TCLK[n] inputs are invalid and should
be tied low when their associated link is
configured for operation in H-MVIP mode.