8 transmit address map register (xam), Xam), Section 3.8 – Texas Instruments VLYNQ Port User Manual

Page 33

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3.8

Transmit Address Map Register (XAM)

VLYNQ Port Registers

The transmit address map register (XAM) is used to translate transmit packet addresses to remote device
configuration bus addresses. The XAM is shown in

Figure 16

and described in

Table 14

.

Figure 16. Transmit Address Map Register (XAM)

31

2

1

0

TXADRMAP

Reserved

R/W-0

R-0

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset

Table 14. Address Map Register (XAM) Field Descriptions

Bit

Field

Value

Description

31-2

TXADRMAP

0-3FFF FFFFh

This field is subtracted from the slave configuration bus address [25:0] to obtain the zero
relative transmit packet address. This field should be programmed with a value of 0 (reset
value).

1-0

Reserved

0

Reserved. Always read as 0. Writes have no effect.

SPRUE36A – September 2007

VLYNQ Port

33

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