REV. M

Page 14

September 1998

AS3502

6) RECEIVE DIGITAL GAIN REGISTER

This register contains an 8-bit coefficient for digital receive gain setting.

DGR

D7

D6

D5

D4

D3

D2

D1

D0

Name

DGR7

DGR6

DGR5

DGR4

DGR3

DGR2

DGR1

DGR0

Default

0

1

0

1

1

0

1

1

Bit No

Symbol

Name and Description

D7-D0

DGR7-

DGR0

Receive Digital Gain Setting (DGR). An 8-bit coefficient written into this register allows

to fine trim the receive path gain from -42 to +6 dB. The coefficient in decimal format

for a given gain is calculated as:

X

= 127.7 × 10

(

DGR

20

)

Coefficient

Receive Gain

Coefficient

Receive Gain

128

0 dB

23

-15 dB

114

-1 dB

16

-18 dB

101

-2 dB

11

-21 dB

90

-3 dB (Default Value)

8

-24 dB

81

-4 dB

5

-27 dB

72

-5 dB

4

-30 dB

64

-6 dB

3

-33 dB

46

-9 dB

2

-36 dB

32

-12 dB

1

-42 dB

7) TONE CONTROL REGISTER

This register controls the various tone generator operation modes and the tone desstinations.

TC

D7

D6

D5

D4

D3

D2

D1

D0

Name

TRINJ

RXINJ

TXINJ

CS

BURST

MODE

SHAPE

TONE

MODE

START

Default

0

0

0

0

0

0

0

0