Motorola MPC8260 PowerQUICC II User Manual page 866

Part IV. Communications Processor Module
Bits 0 1 2 3
Field TEHS
Reset
R/W
Address
Bits 16 17 18 19
Field Ñ TUDC RUDC RXP TUMP
Reset
R/W
Address
Figure 29-59. FCC ATM Mode Register (FPSMR)
Table 29-47 describes FPSMR Þelds.
Bits Name
0Ð3 TEHS Transmit extra header size. Used only in user-deÞned cell mode to hold the Tx user-deÞned
cellsÕ extra header size. Values between 0-11 are valid. TEHS = 0 generates 1 byte of extra
header; TEHS = 11 generates 12 bytes of extra header.
4Ð7 REHS Receive extra header size. Used only in user-deÞned cell mode to hold the Rx user-deÞned
cellsÕ extra header size. Values between 0Ð11 are valid. For REHS = 0, the receiver expects 1
byte of extra header; for REHS = 11, it expects 12 bytes of extra header.
8 ICD Idle cells discard
0 Discard idle cells (GFC, VPI, VCI, PTI =0).
1 Do not discard idle cells.
9 TUMS Transmit UTOPIA master/slave mode
0 Transmit UTOPIA master mode is selected.
1 Transmit UTOPIA slave mode is selected.
10 RUMS Receive UTOPIA master/slave mode
0 Receive UTOPIA master mode is selected.
1 Receive UTOPIA slave mode is selected.
11Ð15 LAST PHY/ Last PHY. (Multiple PHY master mode only.) The UTOPIA interface polls all PHYs starting
PHY ID from PHY address 0 and ending with the PHY address speciÞed in LAST PHY. (The number of
active PHYs are LAST PHY+1). LAST PHY should be speciÞed in both multiplex and direct-
polling modes.
PHY ID. (Multiple PHY slave mode only.) Determines the PHY address of the ATM controller
when conÞgured as a slave in a multiple PHY ATM port.
16Ð18 Ñ Reserved, should be cleared.
19 TUDC Transmit user-deÞned cells
0 Regular 53-byte cells.
1 User-deÞned cells.
20 RUDC Receive user-deÞned cells
0 Regular 53-byte cells.
1 User-deÞned cells.
29-86
4 5 6
REHS
0000_0000_0000_0000
0x11304 (FPSMR1), 0x11324 (FPSMR1), 0x11324 (FPSMR1)
20 21 22
0000_0000_0000_0000
0x11306 (FPSMR1), 0x11326 (FPSMR2), 0x11326 (FPSMR3)
Table 29-47. FCC ATM Mode Register (FPSMR)
MPC8260 PowerQUICC II UserÕs Manual
7 8 9 10
ICD TUMS RUMS
R/W
23 24 25 26
Ñ TSIZE RSIZE UPRM UPLM RUMP HECI
R/W
Description
11 12 13 14
LAST PHY/PHY ID
27 28 29 30
Ñ
MOTOROLA
15
31