CP2201 datasheet(81/108 Pages) SILABS

81 / 108 page

CP2200/1

Rev. 1.0

Indirect Register 1. MACCN: MAC Control Register

Bit 15:

Reserved. Read = varies; Must write 0b.

Bit 14:

RANDRST: Random Number Generator Reset

Writing a ‘1’ to this bit resets the random number generator within the transmit function.

Bits 13–5:Reserved. Read = varies; Must write 000000000b.

Bit 4:

LOOPBCK: Loopback Mode Enable Bit

Note: MAC Loopback Mode is independent of the physical layer loopback mode.

0: Normal operation.

1: MAC transmit data is internally looped back as MAC receive data.

Bit 3:

TXPAUSE: TX Flow Control Enable Bit (Full-Duplex Only)

0: PAUSE control frames are blocked.

1: PAUSE control frames are allowed to pass through the MAC.

Bit 2:

RXPAUSE: RX Flow Control Enable Bit (Full-Duplex Only)

0: PAUSE control frames received from the physical layer are ignored.

1: PAUSE control frames received from the physical layer are acted upon.

Bit 1:

Reserved. Read = 0; Must write 0b.

Bit 0:

RCVEN: Receive Enable

0: The MAC blocks control frames from reaching the receive interface. The MAC blocks all received

packets from the receive interface.

1: The MAC allows received packets to reach the receive interface.

R/W

Reserved RANDRST

Reserved

Bit15

Bit14

Bit13

Bit12

Bit11

Bit10

Bit9

Bit8

R/W

Default Value

Reserved

LOOPBCK TXPAUSE RXPAUSE Reserved

RCVEN

0x8000

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

MACADDR:

0x00

CP2201 Datasheet(PDF) 81 Page - Silicon Laboratories

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