TXC-06412BIOG Transwitch Corporation, TXC-06412BIOG Datasheet - Page 40

• Manufacturer Part Number: TXC-06412BIOG
• Manufacturer: Transwitch Corporation

Specifications of TXC-06412BIOG

• Lead Free Status / RoHS Status: Not Compliant

PHAST-12P Device
DATA SHEET
TXC-06412B
PRELIMINARY TXC-06412B-MB, Ed. 2
June 2005
PPUTRXENB
PPRXEOP
PPRXERR
PPRXVAL
Symbol
Lead No.
C14
D13
A14
B14
I/O/P
O(T)
O(T)
O(T)
I
LVCMOS
LVCMOS
LVCMOS
-
Lead Descriptions
LVTTL
16mA
16mA
16mA
Type
Receive End of Packet: Indicates the last word of a
packet.
Note: Can be asserted high together with PPUTRX-
SOPC, in case of a 1- or 2- byte packet.
Tristated when PPUTRXENB is asserted high in the
previous cycle, or when either the null-PHY address or
a not matching PHY address has been selected.
POS-PHY Standard notation: REOP
Receive Error: Indicates the current packet is aborted
and must be discarded by the Link Layer Device. Can
only be asserted when PPRXEOP is asserted high (i.e.,
during the last word transfer of a packet).
Conditions that cause PPRXERR to be asserted high
are Rx FIFO overflow, abort sequence detection, FCS
error, too short and too long frames.
Tristated when PPUTRXENB is asserted high in the
previous cycle, or when either the null-PHY address or
a not matching PHY address has been selected.
POS-PHY Standard notation: RERR
Receive Write Enable (Active Low): Used along with
PPUTRXADDR to initiate reads from the Rx FIFOs.
Selection phase when PPUTRXENB is asserted high
and transfer phase when PPUTRXENB is asserted low.
During transfer phase PPUTRXADDR is used for poll-
ing.
POS-PHY Standard notation: RENB
Receive Data Valid: Indicates the validity of the
received data signals.
When
PPRXEOP, PPRXMOD, PPUTRXPRTY, PPRXERR are
valid. When low, these signals are invalid and must be
disregarded by the link layer device.
Transitions low on an Rx FIFO empty condition or on an
end of packet. No data will be removed from the Rx
FIFO while PPRXVAL is asserted low.
Once asserted low, PPRXVAL will remain asserted low
until the current PHY has been deselected.
PPRXVAL allows to monitor the selected PHY during a
data transfer, while monitoring or polling other PHYs is
done using PPUTPRPACLAV.
Tristated when PPUTRXENB is asserted high in the
previous cycle, or when either the null-PHY address or
a not matching PHY address has been selected.
POS-PHY Standard notation: RVAL
-
high,
PPUTRXDATA,
Name/Function
PPUTRXSOPC,
4 0 o f 2 26