RELEASED
PM7383 FREEDM-32A256
DATASHEET
PMC-2010336
ISSUE 1
FRAME ENGINE AND DATA LINK MANAGER 32A256
Pin Name
Type
Pin
No.
Function
TSX
Input
L1
The transmit start of transfer signal (TSX)
denotes the start of data transfer on the transmit
APPI. When the TSX signal is sampled high,
the sampled word on the TXDATA[15:0] signals
contain the device and channel address
associated with the data to follow. When the
TSX signal is sampled low, the sampled word
on the TXDATA[15:0] signals do not contain a
device/channel address.
The TSX signal is sampled on the rising edge of
TXCLK.
TEOP
TMOD
Input
Input
P3
P2
The transmit end of packet signal (TEOP)
denotes the end of a packet. TEOP is only valid
during data transfer. When TEOP is sampled
high, the data on TXDATA[15:0] is the last word
of a packet. When TEOP is sampled low, the
data on TXDATA[15:0] is not the last word of a
packet.
TEOP is sampled on the rising edge of TXCLK.
The transmit word modulo signal (TMOD)
indicates the size of the current word on
TXDATA[15:0]. TMOD is only valid when TEOP
is sampled high. When TMOD is sampled high
and TEOP is sampled high, only the
TXDATA[15:8] signals contain valid data and the
TXDATA[7:0] signals are invalid. When TMOD
is sampled low and TEOP is sampled high, the
complete word on TXDATA[15:0] contains valid
data. TMOD must be set low when TEOP is set
low.
TMOD is sampled on the rising edge of TXCLK.
PROPRIETARY AND CONFIDENTIAL
27
PMC [ PMC-SIERRA, INC ]
