KSZ8842-16MBL-EVAL MICREL [Micrel Semiconductor], KSZ8842-16MBL-EVAL Datasheet - Page 107

• Manufacturer Part Number: KSZ8842-16MBL-EVAL
• Description: 2-Port Ethernet Switch with Non-PCI Interface
• Manufacturer: MICREL [Micrel Semiconductor]

Bank 49 Port 1 Control Register 4 (0x02): P1CR4
This register contains the global per port control for the switch function.
Micrel, Inc.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
October 2007
Default
0
0
0
0
0
0
0
0
1
0
0
1
R/W
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Description
LED Off
1 = Turn off all of the port 1 LEDs (P1LED3,
P1LED2, P1LED1, P1LED0). These pins are driven
high if this bit is set to one.
0 = normal operation.
Txids
1 = disable the port’s transmitter.
0 = normal operation.
Restart AN
1 = restart auto-negotiation.
0 = normal operation.
Reserved
Power Down
1 = power down.
0 = normal operation.
Disable auto MDI/MDI-X
1 = disable auto MDI/MDI-X function.
0 = enable auto MDI/MDI-X function.
Force MDI-X
1= if auto MDI/MDI-X is disabled, force PHY into
MDI-X mode.
0 = do not force PHY into MDI-X mode.
Far-End Loopback
1 = perform loopback, as indicated:
Start: RXP2/RXM2 (port 2).
Loopback: PMD/PMA of port 1’s PHY.
End: TXP2/TXM2 (port 2).
0 = normal operation.
Auto Negotiation Enable
1 = auto negotiation is enabled.
0 = disable auto negotiation, speed, and duplex are
decided by bits 6 and 5 of the same register.
Force Speed
1 = force 100BT if AN is disabled (bit 7).
0 = force 10BT if AN is disabled (bit 7).
Force Duplex
1 = force full duplex if (1) AN is disabled or (2) AN is
enabled but failed.
0 = force half duplex if (1) AN is disabled or (2) AN
is enabled but failed.
Advertised flow control capability.
1 = advertise flow control (pause) capability.
0 = suppress flow control (pause) capability from
transmission to link partner.
107
Bit is same as:
Bank 45 0x00 bit 0
Bank 45 0x00 bit1
Bank 45 0x00 bit 9
Bank 45 0x00 bit 2
Bank 45 0x00 bit 11
Bank 45 0x00 bit 3
Bank 45 0x00 bit 4
Bank 45 0x00 bit 14
Bank 45 0x00 bit 12
Bank 45 0x00 bit 13
Bank 45 0x00 bit 8
Bank 45 0x08 bit 10
KSZ8842-16/32 MQL/MVL/MVLI/MBL
M9999-102207-1.9