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periods

 (KCLN  1)  2

(14)

TSC2301

SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004

Bits [14:12] — KCAM2-KCAM0

Keyclick Amplitude. These bits set the amplitude of the keyclick sound with eight amplitude levels provided.

KCAM[2:0] = 100 = Medium amplitude (default)

KCAM[2:0] = 111 = Maximum amplitude

KCAM[2:0] = 000 = Minimum amplitude

Bit 11 — RESERVED

This bit is reserved, and should be written to 0. If read, it reads back as 0.

Bits [10:8] — KCFR2-KCFR0

Keyclick Frequency. These bits set the frequency of the keyclick sound (frequencies are approximate).

Table 45. Keyclick Frequency

KCFR2 KCFR1 KCFR0 Keyclick Tone Frequency

0 0 0 62.5 Hz

0 0 1 125 Hz

0 1 0 250 Hz

0 1 1 500 Hz

1 0 0 1 k Hz (default)

1 0 1 2 k Hz

1 1 0 4 k Hz

1 1 1 8 k Hz

Bits [7:4] — KCLN3-KCLN0

Keyclick Length. These bits set the approximate duration of the keyclick sound, 16 settings for duration are

provided. The formula for the number of periods heard is:

KCLN[3:0] = 0000 = 2 periods of the keyclick sound (min)

KCLN[3:0] = 0001 = 4 periods of the keyclick sound (default)

KCLN[3:0] = 0010 = 6 periods of the keyclick sound

KCLN[3:0] = 0011 = 8 periods of the keyclick sound

KCLN[3:0] = 1111 = 32 periods of the keyclick sound (max)

Bit 3 — RESERVED

This bit is reserved, and should be written as 0. If read, it is read back as 0.

Bit 2 — MONS

Mono Select. This bit determines the position of the mono multiplexer. This multiplexer allows either the left

channel ADC Input or the mono mix of the stereo line outputs to be played out the differential mono output

(MONO+/-).

Table 46. Mono Select

MONS Description

0 Mono output comes from left ADC input (default).

1 Mono output comes from mono mix of line outputs.