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S/UNI-QUAD
PMC-Sierra, Inc.
PM5349 S/UNI-QUAD
DATASHEET
PMC-971239 ISSUE 6 SATURN USER NETWORK INTERFACE (155-QUAD)
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
15
Pin Name Type Pin
No.
Function
TFPO Output AB11 The Transmit Frame Pulse Output (TFPO) pulses
high for one TCLK cycle every 2430 TCLK cycles
and provides an 8 KHz timing reference. TFPO can
be assigned to any of the four channels using
TFPO_CH[1:0] configuration register bits, with the
restriction that the selected channel must be self-
timed (not in loop-timed or line-loopback modes).
TFPO is updated on the rising edge of TCLK.
9.2
UTOPIA Level 2 System Interface
Pin Name Type Pin
No.
Function
TDAT[15]
TDAT[14]
TDAT[13]
TDAT[12]
TDAT[11]
TDAT[10]
TDAT[9]
TDAT[8]
TDAT[7]
TDAT[6]
TDAT[5]
TDAT[4]
TDAT[3]
TDAT[2]
TDAT[1]
TDAT[0]
Input A20
C19
B20
A21
D19
C20
D21
E20
C23
D22
E21
D23
E22
F21
G20
E23
UTOPIA Transmit Cell Data Bus (TDAT[15:0]).
This data bus carries the ATM cell octets that are
written to the selected transmit FIFO. TDAT[15:0] is
considered valid only when TENB is simultaneously
asserted and the S/UNI-QUAD is selected via
TADR[4:0].
TDAT[15:0] is sampled on the rising edge of TFCLK.