31

0h

RW

Disable Repeat Scheduler (SCH_​USB2_​PRDC)

Disable repeat scheduler service of usb2 periodic

30:27

0h

RW

Enable Scheduler Limiter (SCH_​BLOCK_​ASYNC)

Enable scheduler limiter functions to block async. traffic types across ports while periodic pending

26

0h

RW

Enable pkt Pending Notification (EN_​PP_​NTFC_​USB3)

Enable pkt pending notification to usb3 ports

25

0h

RW

Disable Ssync Burst Limitation (DIS_​ASYNC_​BURST)

disable async. burst limitation while periodic in progress

24

0h

RW

Disable Marking Overlap Flag (DIS_​OVERLAP_​TT_​PERIODIC)

Disable marking overlap flag on all TT periodic INs.

23

1h

RW

Disable Blocking of Async Scheduling (DIS_​BLOCK_​ASYNC_​PER_​ACT)

disable blocking of async. scheduling while periodic active to same port

22

1h

RW

Enable Pipelining (EN_​PIPELINE_​MULTIPLE_​OUT)

Setting this bit enables pipelining of multiple OUT EPs (across diff ports).
This will help boost the performance for multiple ports OUT test case

21

0h

RW

Enable Stop Serving Packets (EN_​STOP_​SERVE_​DIS_​PORT)

Enable stop serving packets to disabled port

20:17

0h

RW

TTE Host Control (TTE_​HOST_​CTRL)

(0): disable interrupt complete split limit to 3 microframes
(1): disable checking of missed microframes
(2): disable split error request w/NULL pointer on speculative INs with data payload and no TRB.
(3): disable deferred split error request on speculative IN with data payload and no TRB.
(7:4): reserved

16

0h

RW

Disable Deferred Split Error Request (DIS_​DEFFER_​SPLIT_​ERR)

disable deferred split error request on speculative IN with data payload and no TRB.

15

1h

RW

Disable Split Error Request (TTE_​DIS_​SPLIT_​ERR_​IN_​DATA_​NO_​TRB)

TTE: disable split error request w/NULL pointer on speculative INs with data payload and no TRB.

14

1h

RW

TTE: Disable Checking of Missed Microframes (DIS_​MISSED_​UFRAME_​CHECK)

TTE: Disable checking of missed microframes

13

1h

RW

TTE: Disable Interrupt Complete Split (DIS_​INTER_​SPLIT_​LIMIT)

TTE: Disable interrupt complete split limit to 3 micro frames

12:11

0h

RW

Cache Size Control Reg (CACHE_​SZ_​CTRL)

0: 64
1: 32
2,3: 16

10:9

0h

RW

Maximum EP Per Slot (MAX_​EP_​SLOT)

0: 32
1: 16
2: 8
3: 4

8

1h

RW

Turn on Scratch_​pad_​en (TO_​SCRATCH_​PAD_​EN)

Cmd Mgr: Enables scratch pad function

7

0h

RW

Scheduler Host Control Reg (STOP_​SCH_​UNCON)

enable check to stop scheduling on port that are not connected

6

1h

RW

Disable 1 Pack Scheduling Limit (DIS_​SCH_​LIMIT)

disable 1 pack scheduling limit when ISO pending in present microframe

5:4

0h

RW

Scheduler Sort Pattern (SCH_​SORT_​PATTERN)

00 (default) search ISO ahead of interrupt within each service interval
01 - search USB2-ISO, USB3-ISO, USB2-Interrupt, USB3-Interrupt within each service interval
10 - search strictly by interval
11 - search all ISO intervals ahead interrupt intervals and within each interval, USB2 ahead of USB3

3

0h

RW

Enable TTE Overlap Prevention (EN_​TTE_​OVERLAP_​PREV_​OUT)

enable TTE overlap prevention on interrupt OUT EPs (at cost of possible service interval slip

2

0h

RW

Enable TTE Overlap Prevention (EN_​TTE_​OVERLAP_​PREV_​IN)

enable TTE overlap prevention on interrupt IN EPs (at cost of possible service interval slip

1

0h

RW

Disable TRM active IN EP valid check function (DIS_​TRM_​ACT_​IN_​VALID)

Disable TRM active IN EP valid check function

0

0h

RW

Disable Poll Eelay Function (DIS_​POLL_​DELAY)

Scheduler: Disable poll delay function