BT8222EPFF CONEXANT [Conexant Systems, Inc], BT8222EPFF Datasheet - Page 99

• Manufacturer Part Number: BT8222EPFF
• Description: ATM Transmitter/Receiver with UTOPIA Interface
• Manufacturer: CONEXANT [Conexant Systems, Inc]

CN8223
ATM Transmitter/Receiver with UTOPIA Interface
Use the following steps to initialize the CN8223 for proper UTOPIA port operation:
0x2C—UTOPIA_2 (Utopia Port Control Register 2)
The UTOPIA_2 register is located at address 0x2C and controls operation of the UTOPIA interface.
100046C
15–6
5–0
Bit
10
6
Field
Size
Reserved
Reserved
Name
1.
2.
3.
4.
5.
6.
7.
8.
9.
Put RS8234 in the global reset: write 0x40000000 to CONFIG0.
Write RS8234’s CONFIG0 to appropriate values, but do not overwrite the
GLOBAL_RESET bit.
Put CN8223 in the reset mode: write 0x0080 to CONFIG_5.
Initialize CN8223, including UTOPIA interface if needed.
Release CN8223 reset: write 0x0000 to CONFIG_5.
Release RS8234 reset: set GLOBAL_RESET bit to 0.
Enable RS8234’s Reassembly coprocessor.
Enable CN8223’s Receiver: write 0x0C02 to CELL_VAL register.
Enable RS8234’s Segmentation coprocessor.
Set to 0.
Set to 35 hex.
Conexant
Description
3.3 Configuration Control Registers
3.0 Registers
3-13