ISD94100 Series Technical Reference Manual
Sep 9, 2019
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Rev1.09
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I2S Status Register 1 (I2S_STATUS1)
Register
Offset
R/W Description
Reset Value
I2S_STATUS1
0x24
R/W I
2
S Status Register 1
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
RXCNT
15
14
13
12
11
10
9
8
Reserved
TXCNT
7
6
5
4
3
2
1
0
CH7ZCIF
CH6ZCIF
CH5ZCIF
CH4ZCIF
CH3ZCIF
CH2ZCIF
CH1ZCIF
CH0ZCIF
Bits
Description
[31:21]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
[20:16]
RXCNT
Receive FIFO Level (Read Only)
These bits indicate the number of available entries in receive FIFO
00000 = No data.
00001 = 1 word in receive FIFO.
00010 = 2 words in receive FIFO.
….
01110 = 14 words in receive FIFO.
01111 = 15 words in receive FIFO.
10000 = 16 words in receive FIFO.
Others are reserved. Do not use.
[15:13]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
[12:8]
TXCNT
Transmit FIFO Level (Read Only)
These bits indicate the number of available entries in transmit FIFO
00000 = No data.
00001 = 1 word in transmit FIFO.
00010 = 2 words in transmit FIFO.
….
01110 = 14 words in transmit FIFO.
01111 = 15 words in transmit FIFO.
10000 = 16 words in transmit FIFO.
Others are reserved. Do not use.