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13. I2C Registers > Register Descriptions
438
Tsi574 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
13.2.18
Externally Visible I
2
C Internal Access Control Register
This register allows an external I
2
C master to configure the functionality for internal register accesses
through the slave interface. This register is read-only from the register bus and R/W from the I
2
C bus
through the slave interface.
The fields in this register control the size and auto-increment functions when internal register accesses
are performed by an external master through the slave interface.
This register corresponds to the I
2
C peripheral addresses 0x24 through 0x27.
Register name: EXI2C_ACC_CNTRL
Reset value: 0x0000_00A0
Register offset: 0x1D224
Bits
0
1
2
3
4
5
6
7
00:07
Reserved
08:15
Reserved
16:23
Reserved
24:31
RSIZE
WSIZE
RINC
WINC
Reserved
Bits
Name
Description
Type
Reset
Value
00:23
Reserved
Reserved
R
0x00_0000
24:25
RSIZE
Internal Register Read Access Size
00 = 1 byte (Reserved)
01 = 2 bytes
10 = 4 bytes – An internal register read is invoked once for
each internal register, loading all 4 bytes in the
C Internal Read Data Register”
. The read is
performed when the LSB of the data register is read
(peripheral address 0x14).
11 = 8 bytes (Reserved)
All Reserved settings will result in internal read accesses
being disabled.
R
10
Содержание IDT Tsi574
Страница 1: ...IDT Tsi574 Serial RapidIO Switch User Manual June 6 2016 Titl...
Страница 20: ...About this Document 20 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 34: ...1 Functional Overview JTAG Interface 34 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 100: ...4 Internal Switching Fabric Packet Queuing 100 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 224: ...11 Signals Pinlist and Ballmap 224 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 490: ...B Clocking P_CLK Programming 490 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 512: ...Index 512 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...