Freescale Semiconductor MPC8260 PowerQUICC II Family Reference Manual page 1009

Bits Name
8 ICD
9 TUMS
10 RUMS
11–15 LAST
PHY/
PHY ID
16–17 —
18 TPRI
19 TUDC
20 RUDC
21 RxP
22 TUMP
23 —
Freescale Semiconductor
Table 30-47. FCC ATM Mode Register (FPSMR) (continued)
Idle cells discard
0 Discard idle cells (GFC, VPI, VCI, PTI =0)
1 Do not discard idle cells
1
Note: For IMA It is recommended to program ICD=1 so that idle cells will not be discarded.
Idle cells should not occur on an IMA link, and their presence indicates an IMA protocol
violation. Software should disable the discarding of idle cells, route the idle cells to a
dedicated channel, and treat reception of cells on that dedicated channel as an indication
of a system or system configuration error
Transmit UTOPIA master/slave mode
0 Transmit UTOPIA master mode is selected (Use this mode for IMA support
1 Transmit UTOPIA slave mode is selected
Receive UTOPIA master/slave mode
0 Receive UTOPIA master mode is selected (Use this mode for IMA support
1 Receive UTOPIA slave mode is selected
Last PHY. (Multiple PHY master mode only.) The UTOPIA interface polls all PHYs starting from
PHY address 0 and ending with the PHY address specified in LAST PHY. (The number of active
PHYs are LAST PHY+1). LAST PHY should be specified in both single-Clav and direct-polling
modes.
PHY ID. (Multiple PHY slave mode only.) Determines the PHY address of the ATM controller
when configured as a slave in a multiple PHY ATM port.
1
Note: For IMA support this field must be programmed to the PHY address of the last PHY
device; it is unrelated to the "virtual PHY number" for the IMA group programmed into
VPHYNUM.
Reserved, should be cleared.
Transmitter priority. Used to adjust the default priority of the FCC transmitter. It is strongly
recommended to set TPRI when in multi-PHY mode, or in single-PHY mode if the maximal bit
rate (either internal or external rate) is higher than that of the other FCCs; for other modes, it
should remain cleared.
0 Default operation
1 Prevents elevation to emergency mode
Refer to Table 14-2.
Transmit user-defined cells
0 Regular 53-byte cells (Disable this mode for IMA support
1 User-defined cells
Receive user-defined cells
0 Regular 53-byte cells (Disable this mode for IMA support
1 User-defined cells
Receive parity check.
0 Check Rx parity line
1 Do not check Rx parity line
Transmit UTOPIA multiple PHY mode
0 Transmit UTOPIA single PHY mode is selected
1 Transmit UTOPIA multiple PHY mode is selected (Use this mode for IMA support
Reserved, should be cleared.
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
ATM Controller and AAL0, AAL1, and AAL5
Description
1
)
1
)
1
)
1
)
1
)
30-89