S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Released
Pin Name
Type
Pin
No.
Function
TDAT[11]
TDAT[12]
TDAT[13]
TDAT[14]
TDAT[15]
TDAT[16]
TDAT[17]
TDAT[18]
TDAT[19]
TDAT[20]
TDAT[21]
TDAT[22]
TDAT[23]
TDAT[24]
TDAT[25]
TDAT[26]
TDAT[27]
TDAT[28]
TDAT[29]
TDAT[30]
TDAT[31]
J28
The POS-PHY transmit packet data (TDAT[31:0]) bus carries
the POS packet octets that are written to the transmit FIFO.
J27
H31
H30
H29
H28
G31
G30
G29
G28
G27
F30
F29
F28
F27
E31
E30
E29
E28
D30
D27
In POS-PHY operation, the packet data sample on
TDAT[31:0] is considered valid when TENB is sampled low.
The value sampled on TDAT[7:0] is also used to select a
PHY channel when TENB and TSX are sampled high.
TDAT[31] is the first bit transmitted and TDAT[0] is the last bit
transmitted.
TDAT[31:0] is sampled on the rising edge of TFCLK.
TPRTY
Input
M27
The UTOPIA transmit bus parity (TPRTY) signal indicates the
parity on the TDAT[31:0] bus. A parity error is indicated by a
status bit and a maskable interrupt. Cells with parity errors
are inserted in the transmit stream, so the TPRTY input may
be unused.
TPRTY is considered valid only when TENB is
simultaneously asserted. TPRTY is sampled on the rising
edge of TFCLK.
The POS-PHY transmit bus parity (TPRTY) signal indicates
the parity on the TDAT[31:0] bus. A parity error is indicated
by a status bit and a maskable interrupt. Packets with parity
errors are inserted in the transmit stream, so the TPRTY
input may be unused.
TPRTY is considered valid only when TENB is
simultaneously asserted. TPRTY is sampled on the rising
edge of TFCLK.
TENB
Input
P27
The UTOPIA transmit write enable (TENB) signal is an active
low input which is used to initiate writes to the transmit
FIFO’s.
When TENB is sampled high, the data sampled on
TDAT[31:0], TRPTY and TSOC is invalid. When TENB is
sampled low, the information sampled on TDAT[31:0],
TPRTY and TSOC is valid and is written into the FIFO. A
high to low transition on TENB is needed in conjunction with
TADR[3:0] to select the transmit PHY.
TENB is sampled on the rising edge of TFCLK.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
48
PMC [ PMC-SIERRA, INC ]
