PMC-Sierra, Inc.
STANDARD PRODUCT
PM5945 -UTP5
PMC-940202 ISSUE 2. APRIL 7, 1995
APP_SAPI_UTP5
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GND
GND
TxXon
Power 24
Power 25
Ground
Ground
O
26
PHY layer flow control. 1= Xon, 0= Xoff. Asserted
by the PHY layer for normal transmission.
Deasserted by the PHY layer when the ATM link is
experiencing congestion. The response of the
ATM layer to this signal is user defined. Not Used.
TxEnbB
27
Active low transmit signal asserted by the ATM
layer during cycles when the TxDat contains valid
cell data.
GND
GND
Power 28
Power 29
Ground
Ground
RxDat[0]
RxDat[1]
RxDat[2]
RxDat[3]
RxDat[4]
RxDat[5]
RxDat[6]
RxDat[7]
O
O
O
O
O
O
O
O
31
33
37
39
30
32
38
40
RxDat[7:0] corresponds to a cell byte. Please refer
to the S/UNI datasheet for the byte cell data
structure.
RxDat[7] corresponds to bit 1, the first bit received.
RxDat[0] corresponds to bit 8, the last bit received.
RxPrty
O
34
Receive data bus (RxDat[7:0]) odd parity. Not
Used
VCC
Power 35
Power 36
Power 41
42
+5 Volts
+5 Volts
Ground
VCC
GND
Undefined
RxSOC
O
43
Receive start of cell indication. Identifies the first
byte (word) of a cell on outputs RxDat[7:0]
GND
Power 44
Power 45
Ground
Ground
GND
RxEmptyB
0
46
Active low empty signal to indicate that in the
current cycle there is no valid data for delivery to
the ATM layer.
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PMC [ PMC-SIERRA, INC ]
