PM5366-PI PMC-Sierra, Inc., PM5366-PI Datasheet - Page 44

• Manufacturer Part Number: PM5366-PI
• Description: HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER AND M13 MULTIPLEXER
• Manufacturer: PMC-Sierra, Inc.

PRELIMINARY
DATASHEET
PMC-2010672
Pin Name
TFPO/TMFPO/
TGAPCLK[3]
TFPO/TMFPO/
TGAPCLK[2]
TFPO/TMFPO/
TGAPCLK[1]
PROPRIETARY AND CONFIDENTIAL
Type
Output F4
ISSUE 1
Pin
No.
J4
M3
Function
Framer Transmit Frame Pulse/Multi-frame Pulse
Reference (TFPO/TMFPO[3:1]). TFPO/TMFPO[3:1]
are valid when the TEMAP-84 is configured as DS3
framers by setting the OPMODE_SPEx[2:0] bits in the
SPE Configuration registers and setting the TXGAPEN
bit to 0 in the DS3 and E3 Master Unchannelized
Interface Options register.
In DS3 mode, TFPO[3:1] pulse high for 1 out of every
85 clock cycles, giving a reference M-subframe
indication. In E3 mode, TFPO[3:1] pulse high to mark
the first bit of the frame.
In DS3 mode, TMFPO[3:1] pulse high for 1 out of
every 4760 clock cycles, giving a reference M-frame
indication. TMFPO[3:1] behaves the same as
TFPO[3:1] for E3 applications. This is selected by
setting the TXMFPO bit in the DS3 and E3 Master
Unchannelized Interface Options Registers.
TFPO/TMFPO[3:1] will be updated on the falling edge
of TICLK when the associated TDATIFALL register bit
is a logic 0 and on the rising edge when TDATIFALL is
a logic 1.
Framer Gapped Transmit Clock (TGAPCLK[3:1]).
TGAPCLK[3:1] are valid when the TEMAP-84 is
configured as DS3 framers by setting the
OPMODE_SPEx[2:0] bits in the SPE Configuration
registers and setting the TXGAPEN bit to 1 in the DS3
and E3 Master Unchannelized Interface Options
register.
TGAPCLK[3:1] are derived from the transmit reference
clocks TICLK[3:1] or from the receive clock if loop-
timed. The overhead bit (gapped) positions are
generated internal to the device. TGAPCLK[3:1] are
held high during the overhead bit positions. This clock
is useful for interfacing to devices which source
payload data only.
TGAPCLK[3:1] are used to sample the associated
TDATI[3:1] inputs.
32
HIGH DENSITY 84/63 CHANNEL VT/TU MAPPER
AND M13 MULTIPLEXER
PM5366 TEMAP-84