Public Version
HS I
2
C Register Manual
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Table 17-49. I2C_BUFSTAT
Address Offset
0x40
Physical Address
0x4806 0040
Instance
I2C3
0x4807 0040
I2C1
0x4807 2040
I2C2
Description
This register contains the FIFO status information.
Type
R
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
FIFODEPTH
RXSTAT
Reserved
TXSTAT
Bits
Field Name
Description
Type
Reset
15:14
FIFODEPTH
(1)
FIFO depth indication.
R
0x3
Read
8-bytes FIFO
0x0:
Read
16-bytes FIFO
0x1:
Read
32-bytes FIFO
0x2:
Read
64-bytes FIFO
0x3:
13:8
RXSTAT
RX Buffer Status. It indicates the number of bytes to be
R
0x00
read in the RX FIFO when the
[RDR] is
asserted (set to 1). This indication is useful only in
receiver mode when the draining feature is enabled.
7:6
Reserved
Write 0s for future compatibility. Read returns 0.
R
0x0
5:0
TXSTAT
TX Buffer Status. It indicates the number of bytes to be
R
0x00
written in the TX FIFO when the
[XDR] is
asserted (set to 1). This indication is useful only in
transmitter mode when the draining feature is enabled.
(1)
See
Table 17-50. Register Call Summary for Register I2C_BUFSTAT
HS I2C Integration
•
HS I2C Functional Description
•
•
HS I2C Draining Feature (I2C Mode Only)
[2] [3] [4] [5] [6] [7] [8] [9]
HS I2C Register Manual
•
Table 17-51. I2C_OA1
Address Offset
0x44
Physical Address
0x4806 0044
Instance
I2C3
0x4807 0044
I2C1
0x4807 2044
I2C2
Description
This register is used to specify the module I2C 7-bit or 10-bit address.
Type
RW
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESERVED
OA1
2836
SWPU177N – December 2009 – Revised November 2010
Multimaster High-Speed I
2
C Controller
Copyright © 2009–2010, Texas Instruments Incorporated