TMDS171 Datasheet, PDF (30/62 Pages) Texas Instruments – 3.4 Gbps TMDS RETIMER

TMDS171, TMDS171I
SLLSEN7A – OCTOBER 2015 – REVISED DECEMBER 2015
www.ti.com
Refer to Table 4 for TMDS171 local I²C register descriptions. Reads from reserved fields not described return
zeros, and writes are ignored.
8.5.1.1 BIT Access Tag Conventions
A table of bit descriptions is typically included for each register description that indicates the bit field name, field
description, and the field access tags. The field access tags are described in Table 5.
ACCESS TAG
R
W
S
C
u
NA
NAME
Read
Write
Set
Clear
Update
No Access
Table 5. Access Tags
DESCRIPTION
The field shall be read by software
The field shall be written by software
The field shall be set by a write of one. Writes of Zero to the field have no effect
The field shall be cleared by a write of one. Writes of Zero to the field have no effect
Hardware may autonomously update this field
Not accessible or not applicable
8.5.2 CSR Bit Field Definitions, DEVICE_ID (offset: 00000000 ≈ 00000111) (reset:00h ≈ 07h)
Figure 30. CSR Bit Field Definitions, DEVICE_ID (00h ≈ 07h)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset, S= Set, U = autonomously update
Bit Field
7:0 DEVICE_ID
Table 6. CSR Bit Field Definitions, DEVICE_ID (00h ≈ 07h)
Type
R
Reset
00h ≈ 07h
Description
These fields return a string of ASCII characters “TMDS171”
preceded by one space characters.
TMDS171:
0x00 – 0x07 = {- 0x54”T”, 0x4D”M”, 0x44”D”, 0x53”S”, 0x31”1”,
0x37”7”, 0x31”1”, 0x20},
8.5.3 CSR Bit Field Definitions, REV _ID (offset: 00001000) (reset: 01h)
Figure 31. CSR Bit Field Definitions, REV _ID (08h)
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
1
R
R
R
R
R
R
R
R
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset, S= Set, U = autonomously update
Bit Field
7:0 REV _ID
Table 7. CSR Bit Field Definitions, REV _ID (08h)
Type
R
Reset
01h
Description
This field identifies the device revision.
0000001– TMDS171 Revision 1
30
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