7. I
2
C Interface > Mailboxes
164
Tsi576 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
C Slave Access Status Register”
are accessible by an
external host to examine the mailbox status.
2
C mailboxes.
Figure 35: I
2
C Mailbox Operation
The incoming and outgoing I
2
C mailbox registers are discussed further in the following sections.
EXI2C_MBOX_IN
Writes to Mailbox
0100.......000111
EXI2C_MBOX_IN
EXTERNAL
I
2
C MASTER
Flag Goes Up
EXI2C_ACC_STAT.IMB_FLAG
Host is Interrupted (IMB_FULL)
Host Reads Mailbox
Flag Goes Down
Polls Status Until Flag Down
PROCESSOR/
HOST
EXI2C_MBOX_IN
INCOMING MAIL
EXI2C_MBOX_OUT
Writes to Mailbox
0100.......000111
EXI2C_MBOX_OUT
EXTERNAL
I
2
C MASTER
Flag Goes Up
EXI2C_ACC_STAT.OMB_FLAG
Host is Interrupted (OMB_EMPTY)
Reads Mailbox
Flag Goes Down
Polls Status Until Flag Up
PROCESSOR/
HOST
EXI2C_MBOX_OUT
OUTGOING MAIL
Содержание IDT Tsi576
Страница 1: ...IDT Tsi576 Serial RapidIO Switch User Manual June 6 2016 Titl...
Страница 20: ...About this Document 20 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 34: ...1 Functional Overview JTAG Interface 34 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 102: ...4 Internal Switching Fabric Packet Queuing 102 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 230: ...11 Signals Pinlist and Ballmap 230 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 506: ...B Clocking P_CLK Programming 506 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 528: ...Index 528 Tsi576 User Manual June 6 2016 Integrated Device Technology www idt com...