enCoRe™ V CY7C643xx, enCoRe™ V LV CY7C604xx TRM, Document No. 001-32519 Rev *H
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1,D3h
21.4.11 ECO_TRIM
External Oscillator Trim Register
This register trims the external oscillator gain and power settings.
These settings in this register should not be changed from their default state.
In the table, note that reserved bits are grayed table cells and are not described in the bit description section. Reserved bits
must always be written with a value of ‘0’. For additional information, refer to the
Register Definitions on page 91
Analog Multiplexer chapter.
4:2
ECO_XGM[2:0]
These bits set the amplifier gain.
The high-power mode (ECO_LPM=0) step size of the current source is approximately 400 nA.
In low-power mode (ECO_LPM=1), the overall power is approximately 5% lower with the '000' setting
than with the '111' setting.
000
Highest gain setting. Lowest power setting in low-power mode.
111
Lowest gain setting.
101
Typical Value (factory trimmed).
1:0
ECO_LP[1:0]
These regulate low-power mode settings.
00
Highest Power Setting.
11
Lowest power setting (30% power reduction).
00
Default value.
Individual Register Names and Addresses:
1,D3h
ECO_TRIM : 1,D3h
7
6
5
4
3
2
1
0
Access : POR
RW : 4
RW : 1
Bit Name
ECO_XGM[2:0]
ECO_LP[1:0]
Bits
Name
Description
