K60P100M100SF2RM Datasheet, PDF (1712/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Memory map/register definition
I2Sx_FCSR field descriptions (continued)
Field
1001
1010
1011
1100
1101
1110
1000
Description
TFE set when there are more than or equal to 9 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 6 data.
TFE set when there are more than or equal to 10 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 5 data.
TFE set when there are more than or equal to 11 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 4 data.
TFE set when there are more than or equal to 12 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 3 data.
TFE set when there are more than or equal to 13 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 2 data.
TFE set when there are more than or equal to 14 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 1 data.
TFE set when there are more than or equal to 15 empty slots in Transmit FIFO. (default) Transmit
FIFO empty is set when TxFIFO ≤ 0 data.
53.3.13 I²S AC97 Control Register (I2Sx_ACNT)
Addresses: I2S0_ACNT is 4002_F000h base + 38h offset = 4002_F038h
Bit 31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
0
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
W
FRDIV
WR RD TIF FV
Reset 0
Field
31–11
Reserved
10–5
FRDIV
4
WR
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
I2Sx_ACNT field descriptions
Description
This read-only field is reserved and always has the value zero.
Frame Rate Divider.
These bits control the frequency of AC97 data transmission/reception. They are programmed with the
number of frames for which the I²S should be idle, after operating in one frame. Through these bits, AC97
frequency of operation, from 48 KHz (000000) to 1 KHz (101111) can be achieved.
Sample Value: 001010 (10 Decimal) = I²S will operate once every 11 frames
Write Command.
Table continues on the next page...
1712
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.