ZL50233GDC ZARLINK [Zarlink Semiconductor Inc], ZL50233GDC Datasheet - Page 27

• Manufacturer Part Number: ZL50233GDC
• Description: 4 Channel Voice Echo Cancellor
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

Data Sheet
This register is used to select gain values on RIN, ROUT, SIN and SOUT. Gains has the following structure:
RIN ROUT SIN SOUT
Gains = 0xxx 0xxx 0xxx 0xxx
Gains is split into four groups of four bits. Each group maps to a different signal port (as indicated above), and
has three gain bits. The following table indicates how these gain bits are used:
Bit2 Bit1 Bit0
1
Note that the -12 dB PAD bit in Control Register 1 provides 12 dB of attenuation in the Rin to Rout path, and will
override the settings in Gains.
This register allows the user to program the level of MU. MU is a 16 bit 2’s complement value which defaults to
4000
is in Register 1.
0
0
0
0
MU15
Bit 7
Bit 7
MU7
Bit 7
Bit 7
0
0
0
1
1
0
0
hex
Power-up
Power-up
= 0100 0100 0100 0100 (4444
Power-up
Power-up
44
44
= 1.0 The maximum value is 7FFF
40
00
0
1
0
1
0
hex
hex
hex
hex
MU14
Rin2
MU6
Bit 6
Bit 6
Sin2
-12 dB
Bit 6
Bit 6
-3 dB
-6 dB
-9 dB
0 dB (default)
Gain Level
MU13
Rin1
MU5
Bit 5
Bit 5
Sin1
Bit 5
Bit 5
ECA: Adaptation Step Size Register 2 (MU)
ECB: Adaptation Step Size Register 2 (MU)
ECA: Adaptation Step Size Register 1 (MU)
ECB: Adaptation Step Size Register 1 (MU)
Functional Description of Register Bits
Functional Description of Register Bits
hex
) default
ECA: Gains Register 2
ECB: Gains Register 2
ECA: Gains Register 1
ECB: Gains Register 1
MU12
hex
MU4
Bit 4
Rin0
Bit 4
Sin0
Bit 4
Bit 4
Zarlink Semiconductor Inc.
or 1.9999 decimal. The high byte is in Register 2 and the low byte
MU11
MU3
Bit 3
Bit 3
Bit 3
Bit 3
0
0
MU10
Rout2
Sout2
Bit 2
Bit 2
MU2
Bit 2
Bit 2
1B
3B
1A
3A
1D
3D
1C
3C
Rout1
Sout1
MU9
MU1
Bit 1
Bit 1
Bit 1
Bit 1
hex
hex
hex
hex
hex
hex
hex
hex
R/W Address:
R/W Address:
R/W Address:
R/W Address:
R/W Address:
R/W Address:
R/W Address:
R/W Address:
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
+ Base Address
ZL50233
Rout0
Sout0
MU8
MU0
Bit 0
Bit 0
Bit 0
Bit 0
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