dp83630sqx National Semiconductor Corporation, dp83630sqx Datasheet - Page 71

• Manufacturer Part Number: dp83630sqx
• Description: Precision Phyter - Ieee 1588 Precision Time Protocol Transceiver
• Manufacturer: National Semiconductor Corporation

14:12
10:9
Bit
7:0
15
11
14.3 TEST REGISTERS - PAGE 1
Page 1 Test Registers are accessible by setting bits [2:0] = 001 of PAGESEL (13h).
14.3.1 Signal Detect Configuration (SD_CNFG), Page 1
This register contains Signal Detect configuration control as well as some test controls to speed up Auto-neg testing.
8
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
Bit Name
SD_TIME
TABLE 38. Signal Detect Configuration (SD_CNFG), address 0x1E
0000 0000, RW
000, RW
Default
00, RW
1, RW
0, RW
0, RO
RESERVED: Write as 1, read as 1.
RESERVED: Write as 0, read as 0.
RESERVED: Write ignored, read as 0.
RESERVED: Write as 0, read as 0.
Signal Detect Time
Setting this bit to a 1 enables a fast detection of loss of Signal Detect.
This will result in a fast loss of Link indication. Approximate times to
detect signal detect deassertion are:
1 = 1 µs
0 = 250 µs
RESERVED: Write as 0, read as 0.
71
Description
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