參數(shù)資料
型號(hào): MC145574
廠商: Motorola, Inc.
英文描述: ISDN S/T-Interface Transceiver
中文描述: 綜合業(yè)務(wù)數(shù)字網(wǎng)S / T的接口收發(fā)器
文件頁數(shù): 104/164頁
文件大?。?/td> 1072K
代理商: MC145574
MC145574
12–2
MOTOROLA
Table 12–1. S Channel Data Transmission
Frame No.
NT to TE
Fa Bit Position
NT to TE
M Bit
NT to TE
S Bit
TE to NT
Fa Bit Position
1
1
1
SC1.1
Q1
2
0
0
SC2.1
0
3
0
0
SC3.1
0
4
0
0
SC4.1
0
5
0
0
SC5.1
0
6
1
0
SC1.2
Q2
7
0
0
SC2.2
0
8
0
0
SC3.2
0
9
0
0
SC4.2
0
10
0
0
SC5.2
0
11
1
0
SC1.3
Q3
12
0
0
SC2.3
0
13
0
0
SC3.3
0
14
0
0
SC4.3
0
15
0
0
SC5.3
0
16
1
0
SC1.4
Q4
17
0
0
SC2.4
0
18
0
0
SC3.4
0
19
0
0
SC4.4
0
20
0
0
SC5.4
0
1
1
1
SC1.1
Q1
2
0
0
SC2.1
0
The NT will generate an interrupt either once every multiframe, or only in the event of a new Q channel
nibble having been received. A new Q channel nibble is defined as one which differs from the previous
Q nibble.
Table 12–2 illustrates how to configure an NT for either of these options.
Table 12–2. Multiframe Interrupts
BR3(2)
Interrupt Every
Multiframe
NR4(2)
Enable Multiframing
Interrupt
IRQ
MC145574
X
0
Multiframing never causes an interrupt
0
1
An interrupt is generated on the reception of a
new Q Channel nibble
1
1
An interrupt is generated every multiframe
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
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