HBLXT9785EHC.B2Q E000 Intel, HBLXT9785EHC.B2Q E000 Datasheet - Page 216
HBLXT9785EHC.B2Q E000
Manufacturer Part Number
HBLXT9785EHC.B2Q E000
Description
Manufacturer
Intel
Datasheet
1.HBLXT9785EHC.B2Q_E000.pdf
(234 pages)
Specifications of HBLXT9785EHC.B2Q E000
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LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
Table 99. Trim Enable Register (Address 27, Hex 1B) (Sheet 1 of 2)
1. LSHR = Default value is derived from a single device input pin state or a group of device input pin states as
2. Default values for Register bits 27.11:10 are determined by the TxSLEW pins.
3. Default value for Register bit 27.9 is determined by the AMDIX_EN pin.
4. Default value for Register bit 27.8 is determined by the MDIX pin. BGA15 does not support the MDIX
5. R/W = Read/Write, R = Read Only, LH = Latching High – cleared when read.
6.
15:13
11:10
Bit
12
the pin(s) are latched at startup or hardware reset.
hardware configuration. The BGA15 default = 0.
9
8
7
6
5
4
Name
Reserved
Reserved
Per-Port
Rise Time
Control
AMDIX_EN
MDIX
Analog
Loopback
Reserved
Power_EN
Dis_EN
Description
Write as 0, ignore on Read
Write as 0, ignore on Read.
00 = 3.3 ns
01 = 3.6 ns
10 = 3.9 ns
11 = 4.2 ns
NOTE: Values represent nominal load conditions.
0 = Disable auto MDI/MDIX
1 = Enable auto MDI/MDIX
0 = MDI, transmit on pair A (TPFIN n /TPFIP n ) and receive on
1 = MDIX transmit on pair B (TPFON n /TPFOP n ) and receive
NOTE: Manual MDI/MDIX selection (This bit is ignored when
NOTE: BGA15 does not support the MDIX hardware
0 = Disable analog loopback
1 = Enable analog loopback (twisted-pair transmit outputs are
NOTE: In fiber mode, SD for the port must be asserted.
DTE Discovery Process Enable.
0 = Disable DTE discovery process
1 = Enable DTE discovery process
Restart auto-negotiation after writing to this bit to ensure
proper operation.
Write as 0, ignore on Read.
Power Enable (Requires Auto-Negotiation Enable
Register bit 0.12 = 1).
0 = Remote-Power DTE not discovered; process may not be
1 = Potential Remote-Power DTE discovered; indication to
pair B (TPFON n /TPFOP n )
on pair A (TPFIN n /TPFIP n )
active)
complete.
turn on power over the cable.
Register bit 27.9 = 1).
configuration.
Revision Date: 30-May-2006
Document Number: 249241
Type
Revision Number: 010
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
5
Datasheet
LSHR
LSHR
LSHR
Default
N/A
0
0
0
0
0
1,2
1,3
1,4
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