參數(shù)資料
型號: TSS463-AAR
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: VAN Data Link Controller with Serial Interface
中文描述: 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PDSO16
封裝: SOP-16
文件頁數(shù): 42/60頁
文件大?。?/td> 816K
代理商: TSS463-AAR
42
TSS463-AA
4205B–AUTO–12/04
Mailbox
The mailbox contains all the messages received or to be transmitted. Each messages is
link to a channel. The Mailbox RAM area has 128 bytes and is mapped from 0x80 to
0xFF (see Section “Mapping”, page 26 ).
The message (or message buffer) is composed of:
1 byte of message status (only used in receiving),
n bytes of data. These data are the bytes of the DATA field of the frame with the
same organization.
The message is pointed by the Message Pointer Register of the channel, the length of
the message is given by the Message Length and Status Register of the channel. This
area is a pure RAM, it contains a random value after reset.
Figure 27.
Message Buffer Structure for Reception
CHER CHTx
CHRx
Message Pointer Register
DRAK
M_P [6..0]
Message Length and Status Register
M_L [4..0]
RTR
received
RNW
received
RAK
received
M_L [4..0] = n+1
received
DATA 0
Message
R
R
ID [11..0]
E
SOF
DATA 0
DATA n
FCS
E
A
EOF
Received DATA Frame, immediate or deffered reply
Received
DATA n
Received
M_P + 0x80 + n + 2
(
M_P + 0x80
R
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