參數(shù)資料
型號: TSS461CD
英文描述: LAN Node Controller
中文描述: 網(wǎng)絡(luò)節(jié)點控制器
文件頁數(shù): 31/52頁
文件大?。?/td> 268K
代理商: TSS461CD
TSS461C
31
Rev. D (22 Feb 01)
1 to 2 TS
R
Line status reg
4 TS
S
S
4 TS
6 TS
SOF
ID+COM+DATA+CRC
A
BUS
NIRQ
Write
IT Status Register
Write
Last error Register
Write
Last message Register
Write
Message Length & Status Register
Write
Message Status
TS: Timeslot
Figure 21. Update of the Status Register
9.3. Channel Registers
There is a total of 14 channel register sets, each occupying 8 bytes for addressing simplicity, integrated into the circuit.
Each set contains two 2x8-bit registers for the indentifier tag, indentifier mask and command fields plus two 1x8-bit
registers for DMA pointers and message status.
The base_address of each set is:
(0x10 + (0x08 * channel_number))
.
When the TSS461C is reseted either via the external reset pin or the general reset command, the channel registers are
not affected. That is, on power-up of the circuit, all the channel registers start with random values.
Due to this fact, the user should take care to initialize all the channel registers before exiting from idle mode. The easiest
way to disable an channel register is to set the received and transmitted bits to 1 in the Message Length & Status
Register.
Table 3: Channel Register Sets Map
Channel Number
From
To
Channel Number
From
To
6
0x40
0x47
13
0x78
0x7F
5
0x38
0x3F
12
0x70
0x77
4
0x30
0x37
11
0x68
0x6F
3
0x28
0x2F
10
0x60
0x67
2
0x20
0x27
9
0x58
0x5F
1
0x18
0x1F
8
0x50
0x57
0
0x10
0x17
7
0x48
0x4F
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