BT8222EPFF CONEXANT [Conexant Systems, Inc], BT8222EPFF Datasheet - Page 104
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BT8222EPFF
Manufacturer Part Number
BT8222EPFF
Description
ATM Transmitter/Receiver with UTOPIA Interface
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8222EPFF.pdf
(161 pages)
- Current page: 104 of 161
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3.0 Registers
3.4 Transmit Control Registers
0x2A—IDLE_PAY (Transmit Idle Cell Payload Register)
The IDLE_PAY register is located at address 0x2A. This register sets the ATM idle cell payload contents.
0x0C–0x13—TX_HDRx_12, TX_HDRx_34 (Transmit Header Registers)
The Transmit Header registers for port x (where x can be 0 to 3) are located at addresses 0x0C–0x13. These
registers control the header value that is inserted in cells that are transmitted from port x. Cell generation is
described in detail in
Table 3-8. Tx_HDRx Register Addresses
3-18
15–9
8
7–0
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
15–8
7–0
15–8
7–0
Bit
Bit
Bit
Address
Field
8
8
8
8
Field
Field
Size
Size
Size
7
1
8
TX_HDR0_12
TX_HDR0_34
TX_HDR1_12
TX_HDR1_34
TX_HDR2_12
TX_HDR2_34
TX_HDR3_12
TX_HDR3_34
Reserved
Enable Idle Cell CRC
Insertion
Idle Cell Payload
Octet
Header Value—Octet 1
Header Value—Octet 2
Header Value—Octet 3
Header Value—Octet 4
Section
Name
Register Name
Name
Name
2.6.
Table 3-8
Set to 0.
Allows the CRC-10 value to be calculated and inserted into the last 10 bits of each
transmitted idle cell. Normally written to 0.
Inserted into each of the 48 octets of the information field in all idle cells
transmitted. Normally written to 6A.
Transmit Port X ATM Header Value—Octet 1
Transmit Port X ATM Header Value—Octet 2
Transmit Port X ATM Header Value—Octet 3
Transmit Port X ATM Header Value—Octet 4
defines the Tx_HDRx Register addresses.
Conexant
Transmit Port 0 ATM Header Value - Octets 1, 2
Transmit Port 0 ATM Header Value - Octets 3, 4
Transmit Port 1 ATM Header Value - Octets 1, 2
Transmit Port 1 ATM Header Value - Octets 3, 4
Transmit Port 2 ATM Header Value - Octets 1, 2
Transmit Port 2 ATM Header Value - Octets 3, 4
Transmit Port 3 ATM Header Value - Octets 1, 2
Transmit Port 3 ATM Header Value - Octets 3, 4
ATM Transmitter/Receiver with UTOPIA Interface
Description
Description
Description
Description
CN8223
100046C
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