NEC Network Controller uPD98502 - Manual (Page 243)

CHAPTER 4 ATM CELL PROCESSOR
Preliminary User’s Manual S15543EJ1V0UM 243
4.4.10 A_MSA0 to A_MSA3 (Mailbox Start Address Register)
A_MSA0 to A_MSA3 shows start address of Receive Mailbox (Mailbox0 and Mailbox1) and Transmit Mailbox
(Mailbox2 and Mailbox3) respectively. Initial value is all zero.
Bits Field R/W Default Description
31:0 A_MSA0 R/W 0 Start address of Mailbox0
Bits Field R/W Default Description
31:0 A_MSA1 R/W 0 Start address of Mailbox1
Bits Field R/W Default Description
31:0 A_MSA2 R/W 0 Start address of Mailbox2
Bits Field R/W Default Description
31:0 A_MSA3 R/W 0 Start address of Mailbox3
4.4.11 A_MBA0 to A_MBA3 (Mailbox Bottom Address Register)
A_MBA0 to A_MBA3 shows bottom address of Receive Mailbox (Mailbox0 and Mailbox1) and Transmit mailbox
(Mailbox2 and Mailbox3) respectively. Initial value is all zero.
Bits Field R/W Default Description
31:0 A_MBA0 R/W 0 Bottom address of Mailbox0
Bits Field R/W Default Description
31:0 A_MBA1 R/W 0 Bottom address of Mailbox1
Bits Field R/W Default Description
31:0 A_MBA2 R/W 0 Bottom address of Mailbox2
Bits Field R/W Default Description
31:0 A_MBA3 R/W 0 Bottom address of Mailbox3
4.4.12 A_MTA0 to A_MTA3 (Mailbox Tail Address Register)
A_MTA0 to A_MTA3 shows tail address of Receive Mailbox (Mailbox0 and Mailbox1) and Transmit Mailbox
(Mailbox2 and Mailbox3) respectively. Initial value is zero.
Bits Field R/W Default Description
31:0 A_MTA0 R/W 0 Tail address of Mailbox0
Bits Field R/W Default Description
31:0 A_MTA1 R/W 0 Tail address of Mailbox1
Bits Field R/W Default Description
31:0 A_MTA2 R/W 0 Tail address of Mailbox2
Bits Field R/W Default Description
31:0 A_MTA3 R/W 0 Tail address of Mailbox3