AT91SAM9G10-EK Atmel, AT91SAM9G10-EK Datasheet - Page 409
AT91SAM9G10-EK
Manufacturer Part Number
AT91SAM9G10-EK
Description
KIT DEV FOR SAM9G10 ARM
Manufacturer
Atmel
Type
MCUr
Specifications of AT91SAM9G10-EK
Contents
Board, Cables, Power Supply
Silicon Manufacturer
Atmel
Core Architecture
AVR
Kit Contents
Board
Svhc
No SVHC (15-Dec-2010)
Mcu Supported Families
AT91SAM9G10, ARM926EJ-S
Tool / Board Applications
Microcontroller
Rohs Compliant
Yes
For Use With/related Products
*
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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31.10.6
Name:
Address:
Access:
Reset:
• TXCOMP: Transmission Completed (automatically set / reset)
TXCOMP used in Master mode:
0 = During the length of the current frame.
1 = When both holding and shifter registers are empty and STOP condition has been sent.
TXCOMP behavior in Master mode can be seen in
TXCOMP used in Slave mode:
0 = As soon as a Start is detected.
1 = After a Stop or a Repeated Start + an address different from SADR is detected.
TXCOMP behavior in Slave mode can be seen in
page 400
• RXRDY: Receive Holding Register Ready (automatically set / reset)
0 = No character has been received since the last TWI_RHR read operation.
1 = A byte has been received in the TWI_RHR since the last read.
RXRDY behavior in Master mode can be seen in
RXRDY behavior in Slave mode can be seen in
page 400
• TXRDY: Transmit Holding Register Ready (automatically set / reset)
TXRDY used in Master mode:
0 = The transmit holding register has not been transferred into shift register. Set to 0 when writing into TWI_THR register.
1 = As soon as a data byte is transferred from TWI_THR to internal shifter or if a NACK error is detected, TXRDY is set at
the same time as TXCOMP and NACK. TXRDY is also set when MSEN is set (enable TWI).
TXRDY behavior in Master mode can be seen in
409
31
23
15
–
–
7
–
AT91SAM9G10
and
and
TWI Status Register
TWI_SR
0xFFFAC020
Read-only
0x0000F009
Figure 31-31 on page
Figure 31-31 on page
OVRE
30
22
14
–
–
6
GACC
400.
400.
29
21
13
–
–
5
Figure 31-8 on page
Figure 31-10 on page
Figure 31-26 on page
SVACC
Figure 31-28 on page
Figure 31-8 on page 381
28
20
12
–
–
4
EOSACC
SVREAD
27
19
11
–
–
3
381.
382.
396,
398,
and in
Figure 31-29 on page
Figure 31-29 on page
SCLWS
TXRDY
26
18
10
Figure 31-10 on page
–
–
2
ARBLST
RXRDY
25
17
–
–
9
1
399,
399,
6462A–ATARM–03-Jun-09
382.
Figure 31-30 on
Figure 31-30 on
TXCOMP
NACK
24
16
–
–
8
0
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