CS4210 datasheet(92/102 Pages) NSC

92 / 102 page

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The altMode bits provide fine control over the individual

P1394a features. The individual bit controls for altIdleIn-

sert, altMultiSpd, altAckAccel, and altAckConcat can be

modified by controlling the altMode bits.

These four indi-

vidual bits are considered the modifier in the Table 4-57.

The combination of the individual alt bits and the altMode

determine the enabling of the P1394a feature. For exam-

ple, the second line in the table represents the case where

P1394a features are enables with no modification. The

result field being one indicates that the P1394a feature is

enabled. For the case of the fourth row, if the altAckAccel

bit were set to one for example, then that single P1394a

feature would be disabled as indicated by the zero in the

result column.

wpDisable

Write Protect Disable: Turn-off write protection of selected vendor specific

registers. 0 = Disable; 1 = Enable.

atresBackoff

AT Response Context Backoff: Allow backoff timing for retransmission of

asynchronous requests via the AT response context.

0 = Disable; 1 = Enable.

atreqBackoff

AT Request Context Backoff: Allow backoff timing for retransmission of

asynchronous requests via the AT request context. 0 = Disable; 1 = Enable.

0shortCycle

Short Cycle: Allow cycle count to increment when cycle offset = 511

instead of 3071. 0 = Disable; 1 = Enable.

Short cycle operation is intended for testing only.

Table 4-57. BAR1+Offset 00h: nscControl Register (Continued)

Bit

Name

Access

Reset

Description

Table 4-58. altMode

nscControl.altMode

(BAR1+Offset 00h[17:16]

HCControl.aPhyEnhance

Enable

(BAR0+Offset 50h[22])

nscControl.Modifier

(BAR1+Offset 00h[9, 7, 6, 5])

Result

00 or 11 (XOR)

00 or 11

01 (AND)

10 (OR)

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