III PERIPHERAL BLOCK: MONITORED MOBILE ACCESS INTERFACES

RXENS: HDLC receive enable (D7) / HDLC transfer settings register (0x0200308)

TXENS: HDLC transmit enable (D6) / HDLC transfer settings register (0x0200308)

RXIES: HDLC Rx and Sp INT enable (D1) / HDLC transfer settings register (0x0200308)

TXIES: HDLC Tx INT enable (D0) / HDLC transfer settings register (0x0200308)

Writing "1" to a bit enables the corresponding operation or interrupts. Writes of "0" are ignored. Clearing a bit requires writing to the corresponding bit in the HDLC cancel transfer register.

Reading this register returns the current setting for these enable bits: disabled ("0") or enabled ("1").

Setting RXENS to "1" starts receive operation. Note that there is no flag or abort detection while operation is disabled.

Write "1": Receive enabled

Write "0": Invalid

Read "1": Receive enabled

Read "0": Receive disabled

Setting TXENS to "1" starts transmit operation. The Mark/Flag on idle (MRKFLG) bit specifies whether the interface transmits the mark or flag pattern while transmit operation is disabled.

Write "1": Transmit enabled

Write "0": Invalid

Read "1": Transmit enabled

Read "0": Transmit disabled

Setting RXIES to "1" enables Rx and Sp INT interrupts. Note that the Rx enable/disable setting does not affect Rx INT interrupts.

Write "1": Interrupt disabled

Write "0": Invalid

Read "1": Interrupt enabled

Read "0": Interrupt disabled

Setting TXIES to "1" produces Tx INT interrupts when the transmit queue exceeds the threshold setting.

Write "1": Interrupt disabled

Write "0": Invalid

Read "1": Interrupt enabled

Read "0": Interrupt disabled

B-III-10-34

EPSON

S1C33210 FUNCTION PART