TXC-06412BIOG Transwitch Corporation, TXC-06412BIOG Datasheet - Page 37

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

Specifications of TXC-06412BIOG

• Lead Free Status / RoHS Status: Not Compliant

3 7 o f 2 2 6
PPUTTXSOPC
PPUTTXENB
PPTXSTPA
PPTXMOD
PPTXEOP
PPTXERR
Symbol
Lead No.
G19
C22
D16
F20
E21
F19
I/O/P
O(T)
I
I
I
I
I
LVCMOS
- Lead Descriptions -
LVTTL
LVTTL
LVTTL
LVTTL
LVTTL
24mA
Type
Transmit Word Modulo: Indicates the size of the cur-
rent word. When low, it indicates a 2-byte word.
When high, it indicates a 1-byte word (present on the
MSBs, LSBs are discarded). Evaluated only when
PPTXEOP is asserted high (i.e., during the last word
transfer of a packet).
POS-PHY Standard notation: TMOD
Transmit Start of Packet: Indicates the first word of a
packet. Valid only when PPUTTXENB is asserted low.
POS-PHY Standard notation: TSOP
Transmit End of Packet: Indicates the last word of a
packet. Note: Can be asserted high together with
PPUTTXSOPC, in case of a 1- or 2- byte packet. Valid
only when PPUTTXENB is asserted low.
POS-PHY Standard notation: TEOP
Transmit Error: Indicates the current packet is aborted:
the PHAST-12P will insert the abort sequence. Evalu-
ated only when PPTXEOP is asserted high (i.e., during
the last word transfer of a packet).
POS-PHY Standard notation: TERR
Transmit Write Enable (Active Low): Used along with
PPUTTXADDR to initiate writes to the Tx FIFOs. Selec-
tion phase when PPUTTXENB is asserted high and
transfer phase when PPUTTXENB is asserted low. Dur-
ing transfer phase PPUTTXADDR is used for polling.
POS-PHY Standard notation: TENB
Selected-PHY Transmit Packet Available: High when
a
(SpaceAV_Threshold_Low) is available in the selected
Tx FIFO, otherwise low. It always provides status info
for the selected PHY, in order to avoid Tx FIFO over-
flows while polling is performed.
Tristated when PPUTTXENB is asserted high in the pre-
vious cycle, or when either the null-PHY address or a
not matching PHY address has been selected.
POS-PHY Standard notation: STPA
predefined
minimum
Name/Function
PRELIMINARY TXC-06412B-MB, Ed. 2
number
PHAST-12P Device
of
DATA SHEET
free
TXC-06412B
June 2005
words