SNLS478B NOVEMBER 2014 – May 2020 DS90UH940-Q1
PRODUCTION DATA.
The deserializer has an I2S Master Clock Output (MCLK). It supports x1, x2, or x4 of I2S CLK Frequency. When the I2S PLL is disabled, the MCLK output is off. Table 6 covers the range of I2S sample rates and MCLK frequencies. By default, all the MCLK output frequencies are x2 of the I2S CLK frequencies. The MCLK frequencies can also be enabled through the register bits 0x3A[6:4] (I2S DIVSEL), shown in Register Maps. To select desired MCLK frequency, write 0x3A[7], then write to bit [6:4] accordingly.
SAMPLE RATE
(kHz) |
I2S DATA WORD SIZE
(BITS) |
I2S CLK
(MHz) |
MCLK OUTPUT
(MHz) |
REGISTER 0x3A[6:4]'b |
---|---|---|---|---|
32 | 16 | 1.024 | I2S_CLK x1 | 000 |
I2S_CLK x2 | 001 | |||
I2S_CLK x4 | 010 | |||
44.1 | 1.4112 | I2S_CLK x1 | 000 | |
I2S_CLK x2 | 001 | |||
I2S_CLK x4 | 010 | |||
48 | 1.536 | I2S_CLK x1 | 000 | |
I2S_CLK x2 | 001 | |||
I2S_CLK x4 | 010 | |||
96 | 3.072 | I2S_CLK x1 | 001 | |
I2S_CLK x2 | 010 | |||
I2S_CLK x4 | 011 | |||
192 | 6.144 | I2S_CLK x1 | 010 | |
I2S_CLK x2 | 011 | |||
I2S_CLK x4 | 100 | |||
32 | 24 | 1.536 | I2S_CLK x1 | 000 |
I2S_CLK x2 | 001 | |||
I2S_CLK x4 | 010 | |||
44.1 | 2.117 | I2S_CLK x1 | 001 | |
I2S_CLK x2 | 010 | |||
I2S_CLK x4 | 011 | |||
48 | 2.304 | I2S_CLK x1 | 001 | |
I2S_CLK x2 | 010 | |||
I2S_CLK x4 | 011 | |||
96 | 4.608 | I2S_CLK x1 | 010 | |
I2S_CLK x2 | 011 | |||
I2S_CLK x4 | 100 | |||
192 | 9.216 | I2S_CLK x1 | 011 | |
I2S_CLK x2 | 100 | |||
I2S_CLK x4 | 101 | |||
32 | 32 | 2.048 | I2S_CLK x1 | 001 |
I2S_CLK x2 | 010 | |||
I2S_CLK x4 | 011 | |||
44.1 | 2.8224 | I2S_CLK x1 | 001 | |
I2S_CLK x2 | 010 | |||
I2S_CLK x4 | 011 | |||
48 | 3.072 | I2S_CLK x1 | 001 | |
I2S_CLK x2 | 010 | |||
I2S_CLK x4 | 011 | |||
96 | 6.144 | I2S_CLK x1 | 010 | |
I2S_CLK x2 | 011 | |||
I2S_CLK x4 | 100 | |||
192 | 12.288 | I2S_CLK x1 | 011 | |
I2S_CLK x2 | 100 | |||
I2S_CLK x4 | 110 |