R2000 datasheet(32/75 Pages) ETC

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Indy® R2000 Electrical, Mechanical, & Thermal Specification

Figure 6-8: Parallel Interface Write Timing

Address

Data

CSn

ALE

DA[3:0]

WRn

WRw

Woff

Won

Table 21: Parallel Interface Timing Conditions

Symbol

Parameter

Min

Typ

Max

Units

tWon

ALE pulse width

100

tWoff

ALE inactive width

100

tAs

Address setup time

tAh

Address hold time

tRDw/tWRw

Read/Write strobe width

tDon

Data-on output delay

tDoff

Data-off output delay

tDs

Data setup time

tDh

Data hold time

7.2

Note that negative signed values are stored as two’s complement. If the number is negative, two’s complement

conversion needs to be performed when converting between the ba

ses. When converting to two’s complement, the

number of bits should be according to the bit column in Table 22.

Table 22: Register Map

Addr.

Name

R/W

Bit

Description

Reset

Type

Comment

000

–

03f

TX_I

R/W

11:0

TX amplitude data I

h0000

s1.10

TX look-up table (LUT)

amplitude data for the

I-output (signed), 64

registers.

040

–

07f

TX_Q

R/W

11:0

TX amplitude data Q

h0000

s1.10

TX look-up table (LUT)

amplitude data for the

Q-output (signed), 64

registers.

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