TXC-05802AIPQ Transwitch Corporation, TXC-05802AIPQ Datasheet - Page 17

• Manufacturer Part Number: TXC-05802AIPQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-05802AIPQ

• Operating Supply Voltage (typ): 3.3/5V
• Operating Temperature Classification: Industrial
• Package Type: PQFP
• Mounting: Surface Mount
• Pin Count: 208
• Lead Free Status / Rohs Status: Not Compliant

16-Bit Cell Interface Mode - ATM and PHY Layer Emulation
16-Bit cell interface mode can be selected to emulate an ATM Layer UTOPIA device, or alternatively to emu-
late a PHY Layer UTOPIA device, as shown in Figures 11 and 12, respectively.
16-Bit mode is enabled by setting device strap pin ABRENA low, with the settings of TRAN, LMODE2,
LMODE1 and LMODE0 selected according to the table in Figure 11 for ATM Layer emulation, or according to
the table in Figure 12 for PHY Layer emulation. The PHY Layer emulation is enabled with PHYEN.
The timing of the 16-Bit mode is identical to that of the UTOPIA mode, but the data width is expanded to a
word of 16 bits in and out. The translation RAM is not used in this case. The extra 8 inlet bits are connected to
the pins used for the data of the translation RAM, TRD (7-0), and the extra 8 outlet pins are the pins for the 8
LSB of the translation RAM address output, TRA (7-0).
PHYEN
High
High
High
High
High
Figure 11. ATM Layer Emulation 16-Bit Mode Signal Connections and Operating Mode Selection
TRAN
X
X
X
X
X
LMODE2
High
Low
Low
Low
Low
8 LSB
8 MSB
8 LSB
8 MSB
LMODE1
High
High
Low
Low
X
LMODE0
Inlet
Outlet
TRD(7-0)
CID(7-0)
CISOC
CIF1(ACK)
CIF2
CIF3(NOACK)
CIF4
CICLAV
CIENB
CICLK
GFC3
GFC2
GFC1
GFC0
TRA(7-0)
COD(7-0)
COSOC
COCLAV
COENB
COCLK
High
High
Low
Low
X
Microprocessor
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Operating Mode: Inlet
16-Bit: 29 words, cell plus
one word of Tandem
Routing Header, plus one
word of CellBus Bus
Routing Header
16-Bit: 29 words, cell plus
one word of Tandem
Routing Header, plus one
word of CellBus Bus
Routing Header
16-Bit: 28 words, cell, plus
one word of CellBus Bus
Routing Header
16-Bit: 28 words, cell, plus
one word of CellBus Bus
Routing Header
Reserved
CUBIT- Pro
CellBus bus
CBD(31-0)
CBRC
CBWC
CBF
CBACK
CBCONG
32
Operating Mode: Outlet
16-Bit: 28 words, cell plus
one word of Tandem
Routing Header
16-Bit: 27-word cell
16-Bit: 28 words, cell plus
one word of Tandem
Routing Header
16-Bit: 27-word cell
Reserved
Ed. 3, November 1999
TXC-05802
CUBIT- Pro
TXC-05802-MB