AM79C901AJCT AMD [Advanced Micro Devices], AM79C901AJCT Datasheet - Page 50

• Manufacturer Part Number: AM79C901AJCT
• Description: HomePHY Single-Chip 1/10 Mbps Home Networking PHY
• Manufacturer: AMD [Advanced Micro Devices]

HPR16: HomePNA PHY Control Register (Register 16)
Note: Writes to bits 1 and 2 will affect speed and power on node only.
50
14:13
Bits
15
12
11
10
9
8
7
6
5
4
3
2
1
0
Remote Command
Reserved
SQE_TEST Disable
Command Low Power
Command High Power
Command Low Speed
Command High Speed
Disable AID Negotiation
Clear PHY-Event Counter
Disable Squelch adaptation
Power Down
Reserved
High Speed
High Power
Reserved
Table 26. HPR16: HomePNA PHY Control Register (Register 16)
Name
P R E L I M I N A R Y
1 = Ignore Remote Commands
0 = Normal operation
Reads will produce undefined results. Should be
written as 0.
1 = Disables the SQE heartbeat which occurs after
each transmission.
0 = The heartbeat assertion occurs on the COL pin
approximately 1-5 µs after transmission and for a
duration of 1 µs.
1 = Command low power
0 = Normal operation
1 = Command high power
0 = Normal operation
1 = Command low speed
0 = Normal operation
1 = Command high speed
0 = Normal operation
1 = Disable AID negotiation
0 = Normal operation
1 = Clear PHY event counter
0 = Normal operation
**Self clearing after ~100 ns
1 = Disable Squelch adaptation
0 = Normal operation
1 = Power down
0 = Normal operation
(This bit is controlled by the HPR0, bit 11)
Reads will produce undefined results
1 = Device is currently in High speed
0 = Device is currently in Low speed
1 = Device is currently in High power
0 = Device is currently in Low power
Reads will produce undefined results
Am79C901A
Description
Read/
Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
Default
Value
(hex)
XX
X
X
0
0
0
0
0
0
0
0
0
0
1
0