cx28224 Mindspeed Technologies, cx28224 Datasheet - Page 94

• Manufacturer Part Number: cx28224
• Description: Cx28224/5/9 Inverse Multiplexing For The Atm Ima Family
• Manufacturer: Mindspeed Technologies

Transmission Convergence Block
5.2.5.3
Figure 5-8. General Purpose Mode
5-12
General Notes:
(1)
2. In general purpose mode, SPTxSync and SPRxSync should be tied high and Register IOMODE bits (6 and 4) should be
set to 0 (default).
3. Diagram shows default values for TxClkPol and RxClkPol (IOMODE register).
400 – 1168k clock
The 1168 kbps limit is imposed by the Bt8970; the CX28229 operates at data rates up to 10 Mbps.
Rx Serial Data
Tx Serial Data
(1)
General Purpose Mode Interface
The CX2822x has a general purpose mode interface as illustrated in
mode allows connection with framers that do not provide frame synchronization. The
CX2822x receives a data stream from the external framer, performs byte-alignment
and cell delineation, and passes the ATM cells to the ATM layer device. The
CX2822x performs the inverse process on transmitted data. In this mode, the framer
must ensure that only ATM cells are present in the data stream.
MSB
Bt8970
MSB
RSER
TSER
Mindspeed Technologies
BClk
Transparent Cell Transport
Tx Serial Data
Rx Serial Data
+3.3 V
Clock
SPRxData
SPTxData
SPRxSync
SPTxSync
SPTxClk
SPRxClk
™
CX28229
PORT X
CX28224/5/9 Data Sheet
Figure
28229-DSH-001-D
5-8. This
500027_014a