lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 10

• Manufacturer Part Number: lan9312
• Description: Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

14.5.4 Buffer Manager CSRs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412
Chapter 15 Operational Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441
15.1
15.2
15.3
15.4
15.5
15.5.1 Equivalent Test Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444
15.5.2 Reset and Configuration Strap Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 445
15.5.3 Power-On Configuration Strap Valid Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 446
15.5.4 PIO Read Cycle Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 447
15.5.5 PIO Burst Read Cycle Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448
15.5.6 RX Data FIFO Direct PIO Read Cycle Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 449
15.5.7 RX Data FIFO Direct PIO Burst Read Cycle Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
15.5.8 PIO Write Cycle Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 451
15.5.9 TX Data FIFO Direct PIO Write Cycle Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452
15.5.10 Microwire Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453
Revision 1.2 (04-08-08)
14.5.3.14
14.5.3.15
14.5.3.16
14.5.3.17
14.5.3.18
14.5.3.19
14.5.3.20
14.5.3.21
14.5.3.22
14.5.3.23
14.5.3.24
14.5.3.25
14.5.3.26
14.5.3.26.1Ingress Rate Table Registers .................................................................................................396
14.5.3.27
14.5.3.28
14.5.3.29
14.5.3.30
14.5.3.31
14.5.3.32
14.5.3.33
14.5.3.34
14.5.3.35
14.5.3.36
14.5.3.37
14.5.3.38
14.5.3.39
14.5.3.40
14.5.4.1
14.5.4.2
14.5.4.3
14.5.4.4
14.5.4.5
14.5.4.6
14.5.4.7
14.5.4.8
14.5.4.9
14.5.4.10
14.5.4.11
14.5.4.12
14.5.4.13
14.5.4.14
14.5.4.15
14.5.4.16
14.5.4.17
14.5.4.18
14.5.4.19
14.5.4.20
14.5.4.21
14.5.4.22
14.5.4.23
14.5.4.24
14.5.4.25
14.5.4.26
14.5.4.27
Absolute Maximum Ratings*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441
Operating Conditions** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441
Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
DC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
AC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444
Switch Engine DIFFSERV Table Read Data Register (SWE_DIFFSERV_TBL_RD_DATA) ....................................................................... 382
Switch Engine DIFFSERV Table Command Status Register (SWE_DIFFSERV_TBL_CMD_STS) ............................................................ 383
Switch Engine Global Ingress Configuration Register (SWE_GLOBAL_INGRSS_CFG)............................................................................. 384
Switch Engine Port Ingress Configuration Register (SWE_PORT_INGRSS_CFG) ..................................................................................... 386
Switch Engine Admit Only VLAN Register (SWE_ADMT_ONLY_VLAN)..................................................................................................... 387
Switch Engine Port State Register (SWE_PORT_STATE)........................................................................................................................... 388
Switch Engine Priority to Queue Register (SWE_PRI_TO_QUE) ................................................................................................................ 389
Switch Engine Port Mirroring Register (SWE_PORT_MIRROR).................................................................................................................. 390
Switch Engine Ingress Port Type Register (SWE_INGRSS_PORT_TYP) ................................................................................................... 391
Switch Engine Broadcast Throttling Register (SWE_BCST_THROT) .......................................................................................................... 392
Switch Engine Admit Non Member Register (SWE_ADMT_N_MEMBER)................................................................................................... 393
Switch Engine Ingress Rate Configuration Register (SWE_INGRSS_RATE_CFG) .................................................................................... 394
Switch Engine Ingress Rate Command Register (SWE_INGRSS_RATE_CMD)......................................................................................... 395
Switch Engine Ingress Rate Command Status Register (SWE_INGRSS_RATE_CMD_STS) .................................................................... 397
Switch Engine Ingress Rate Write Data Register (SWE_INGRSS_RATE_WR_DATA)............................................................................... 398
Switch Engine Ingress Rate Read Data Register (SWE_INGRSS_RATE_RD_DATA) ............................................................................... 399
Switch Engine Port 0 Ingress Filtered Count Register (SWE_FILTERED_CNT_MII) .................................................................................. 400
Switch Engine Port 1 Ingress Filtered Count Register (SWE_FILTERED_CNT_1) ..................................................................................... 401
Switch Engine Port 2 Ingress Filtered Count Register (SWE_FILTERED_CNT_2) ..................................................................................... 402
Switch Engine Port 0 Ingress VLAN Priority Regeneration Table Register (SWE_INGRSS_REGEN_TBL_MII) ........................................ 403
Switch Engine Port 1 Ingress VLAN Priority Regeneration Table Register (SWE_INGRSS_REGEN_TBL_1) ........................................... 404
Switch Engine Port 2 Ingress VLAN Priority Regeneration Table Register (SWE_INGRSS_REGEN_TBL_2) ........................................... 405
Switch Engine Port 0 Learn Discard Count Register (SWE_LRN_DISCRD_CNT_MII) ............................................................................... 406
Switch Engine Port 1 Learn Discard Count Register (SWE_LRN_DISCRD_CNT_1) .................................................................................. 407
Switch Engine Port 2 Learn Discard Count Register (SWE_LRN_DISCRD_CNT_2) .................................................................................. 408
Switch Engine Interrupt Mask Register (SWE_IMR)..................................................................................................................................... 409
Switch Engine Interrupt Pending Register (SWE_IPR)................................................................................................................................. 410
Buffer Manager Configuration Register (BM_CFG) ...................................................................................................................................... 412
Buffer Manager Drop Level Register (BM_DROP_LVL)............................................................................................................................... 413
Buffer Manager Flow Control Pause Level Register (BM_FC_PAUSE_LVL)............................................................................................... 414
Buffer Manager Flow Control Resume Level Register (BM_FC_RESUME_LVL) ........................................................................................ 415
Buffer Manager Broadcast Buffer Level Register (BM_BCST_LVL)............................................................................................................. 416
Buffer Manager Port 0 Drop Count Register (BM_DRP_CNT_SRC_MII) .................................................................................................... 417
Buffer Manager Port 1 Drop Count Register (BM_DRP_CNT_SRC_1) ....................................................................................................... 418
Buffer Manager Port 2 Drop Count Register (BM_DRP_CNT_SRC_2) ....................................................................................................... 419
Buffer Manager Reset Status Register (BM_RST_STS) .............................................................................................................................. 420
Buffer Manager Random Discard Table Command Register (BM_RNDM_DSCRD_TBL_CMD) ................................................................ 421
Buffer Manager Random Discard Table Write Data Register (BM_RNDM_DSCRD_TBL_WDATA) ........................................................... 422
Buffer Manager Random Discard Table Read Data Register (BM_RNDM_DSCRD_TBL_RDATA)............................................................ 423
Buffer Manager Egress Port Type Register (BM_EGRSS_PORT_TYPE) ................................................................................................... 424
Buffer Manager Port 0 Egress Rate Priority Queue 0/1 Register (BM_EGRSS_RATE_00_01) .................................................................. 426
Buffer Manager Port 0 Egress Rate Priority Queue 2/3 Register (BM_EGRSS_RATE_02_03) .................................................................. 427
Buffer Manager Port 1 Egress Rate Priority Queue 0/1 Register (BM_EGRSS_RATE_10_11) .................................................................. 428
Buffer Manager Port 1 Egress Rate Priority Queue 2/3 Register (BM_EGRSS_RATE_12_13) .................................................................. 429
Buffer Manager Port 2 Egress Rate Priority Queue 0/1 Register (BM_EGRSS_RATE_20_21) .................................................................. 430
Buffer Manager Port 2 Egress Rate Priority Queue 2/3 Register (BM_EGRSS_RATE_22_23) .................................................................. 431
Buffer Manager Port 0 Default VLAN ID and Priority Register (BM_VLAN_MII) .......................................................................................... 432
Buffer Manager Port 1 Default VLAN ID and Priority Register (BM_VLAN_1) ............................................................................................. 433
Buffer Manager Port 2 Default VLAN ID and Priority Register (BM_VLAN_2) ............................................................................................. 434
Buffer Manager Port 0 Ingress Rate Drop Count Register (BM_RATE_DRP_CNT_SRC_MII) ................................................................... 435
Buffer Manager Port 1 Ingress Rate Drop Count Register (BM_RATE_DRP_CNT_SRC_1) ...................................................................... 436
Buffer Manager Port 2 Ingress Rate Drop Count Register (BM_RATE_DRP_CNT_SRC_2) ...................................................................... 437
Buffer Manager Interrupt Mask Register (BM_IMR) ..................................................................................................................................... 438
Buffer Manager Interrupt Pending Register (BM_IPR) ................................................................................................................................. 439
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
DATASHEET
10
SMSC LAN9312
Datasheet