S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
Pin Name Type
Pin
No.
Function
The Receive Start of Cell (RSOC) is an active high signal that
RSOC
Tristate
Output
V19
marks the first word of the cell on the RDAT[15:0] bus.
The RSOC output is updated on the rising edge of RCLK.
The Receive Cell Data (RDAT[15:0]) signals carry the ATM cell
words that have been read from the S/UNI-IMA-4 internal cell
buffers. When this interface is operating in 8-bit mode, the data is
carried on RDAT[7:0].
RDAT[15]
RDAT[14]
RDAT[13]
RDAT[12]
RDAT[11]
RDAT[10]
RDAT[9]
RDAT[8]
RDAT[7]
RDAT[6]
RDAT[5]
RDAT[4]
RDAT[3]
RDAT[2]
RDAT[1]
RDAT[0]
Tristate
Output
U22
T22
U19
R20
R22
T19
R19
P20
P21
P22
P19
N20
N21
N22
N19
M20
The RDAT[15:0] output bus is updated on the rising edge of RCLK.
The Receive Parity (RPRTY) signal provides the parity
(programmable for odd or even parity) of the RDAT[15:0] bus. When
the interface is operating in 8-bit mode, the parity is calculated over
RDAT[7:0]
RPRTY
Tristate
Output
M22
The RPRTY output is updated on the rising edge of RCLK.
9.3 Transmit Slave Interface (ANY-PHY mode) (30 Signals)
Pin Name Type
Pin
Function
No.
The Transmit Clock (TCLK) signal is used to transfer cells across
TCLK
Input
E19
the ANY-PHY interface to the internal downstream cell buffers.
The TPA output is updated on the rising edge of TCLK.
The TENB. TSX, TSOP, TDAT[15:0], TPRTY, TADR[6:0], and
TCSB inputs are sampled on the rising edge of TCLK.
The TCLK input must cycle at a 52 MHz or lower instantaneous rate.
The Transmit Packet Available (TPA) is an active high signal that
indicates the availability of space in the selected logical channel
FIFO when polled using the TADR[6:0] signals.
TPA
Tristate
Output
L22
The S/UNI-IMA-4 device drives TPA with the cell availability status
of the polled port two TCLK cycles after TADR[6:0] matches the
S/UNI IMA’s device address. The TPA output is high-impedance at
all other times.
The TPA output is updated on the rising edge of TCLK.
The Transmit enable bar (TENB) is an active low signal that is
TENB
Input
L20
used to indicate cell transfers to the internal cell buffers.
The TENB input is sampled on the rising edge of TCLK.
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
32
PMC [ PMC-SIERRA, INC ]
