cn8236 Mindspeed Technologies, cn8236 Datasheet - Page 307

• Manufacturer Part Number: cn8236
• Description: Atm Servicesar Plus With Xbr Traffic Management
• Manufacturer: Mindspeed Technologies

CN8236
ATM ServiceSAR Plus with xBR Traffic Management
Figure 12-7. Transmit Timing in Slave UTOPIA Level 1 Mode
28236-DSH-001-B
TXD/TXPAR
(TXFLAG*)
(TXMARK)
NOTE(S):
(1)
(2)
(3)
(4)
TXCLAV
TXSOC
TXCLK
TXEN*
TXCLAV goes active when a complete cell is in the transmit FIFO buffer.
Example of physical device deactivating TXEN*.
The TXD/TXPAR and TXSOC lines are three-stated (floated) when TXEN* is sampled high (de-asserted).
Physical device can keep TXEN* active while TXCLAV is inactive.
(1)
TxEN* is sampled asserted. Simultaneously, the 8-bit odd parity computed over
the TxData[15:0] lines is driven on to the TxPar output. The TxSOC line is driven
by the SAR to indicate start of cell. If the TxClav output is asserted by the
CN8236, the transmit FIFO buffer does not contain a complete cell. (See
Figure
H1
Transmit data is driven on TxData[15:0] on the rising edge of TXCLK after
12-7.)
***
Mindspeed Technologies
H5
P1
P2
(2)
(3)
(3)
P3
™
***
P48
12.7 Slave Level 1 UTOPIA Mode
(4)
12.0 ATM UTOPIA Interface
H1
H2
8236_076
12-17