RS8234EBGC Mindspeed Technologies, RS8234EBGC Datasheet - Page 329

• Manufacturer Part Number: RS8234EBGC
• Description: RS8234EBGC ATM XBR SAR
• Manufacturer: Mindspeed Technologies

RS8234
ATM ServiceSAR Plus with xBR Traffic Management
14.2.2 Scheduler Internal Memory Control Structures
14.2.3 Scheduler SAR Shared Memory Control Structures
28234-DSH-001-B
Table 14-5. Table of Values for Sch SAR Shared Memory Initialization (1 of 2)
Schedule Table (CBR slot)
Schedule Table (Tunnel
slot)
Schedule Table (DEFAULT)
SEG VCC Table Entry for
VBR (Words 7 - 8)
Bucket Table Entry
SEG VCC Table Entry for
GFR (Words 7 - 9)
(NOTE: Set PRI_GFR lower
than PRI in word 6).
Table
CBR
CBR_VCC_INDEX
Rsvd
CBR
PRI
Rsvd
Rsvd
BUCKET2
L1_EXP
L1_MAN
I1_EXP
I1_MAN
Rsvd
L2_EXP
L2_MAN
I2_EXP
I2_MAN
Rsvd
MCRLIM_IDX
L1_EXP
L1_MAN
I1_EXP
I1_MAN
Rsvd
There are no internal memory scheduler structures that need to be initialized.
Before segmentation is enabled, the host must allocate and initialize all of the
scheduler SAR shared memory control structures.
value(s) for each field.
Field
Mindspeed Technologies
Initialized
Value
0x100
0x120
0xB
0xB
0xA
0xB
0x0
0xF
0x3
0xF
0xF
0x4
0x0
0x0
0x0
0x0
0x0
0x3
0xF
0x0
0xF
0x0
1
0
Slot will schedule a CBR channel.
Schedule seg_vcc_index = 0 channel as CBR.
Set all reserved bits to one.
Slot will schedule a tunnel.
Tunnel Priority Queue = 3.
Set all reserved bits to one.
Set all reserved bits to one.
Offset of four into Bucket Table for VBR2
parameters.
GCRA L = 2.
GCRA I = 3.
Must be initialized to zero.
GCRA L = 1.
GCRA I = 2.
Must be initialized to zero.
Offset of 3 into GFR MCR_Limit table.
GCRA L = 32.
GCRA I = 50. (Provides MCR ~ 3 Mbps.)
Must be initialized to zero.
™
14.0 SAR Initialization - Example Tables
Table 14-5
14.2 Scheduler Initialization
Notes
lists the initial
14-7