參數(shù)資料
型號(hào)： MK50H27Q25
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 1 CHANNEL(S), 51M bps, SERIAL COMM CONTROLLER, PQCC52
封裝： PLASTIC, LCC-52
文件頁(yè)數(shù)： 18/58頁(yè)
文件大?。?/td> 621K
代理商： MK50H27Q25
4.2.1 Mode Register
The Mode Register allows alteration of the MK50H27’s operating parameters.
BIT
NAME
DESCRIPTION
15:11
MFS<4:0>
Minimum Frame Spacing defines the minimum number of flag
sequences transmitted
between adjacent frames transmitted by the
MK50H27. This only affects frames transmitted by the MK50H27
and does not restrict the spacing of the frames received by the
MK50H27.
When
using RTS/CTS control this field defines the
number of flags transmitted at the beginning of the frame after
CTS is driven low (minus one for the trailing flag).
See
the fol-
lowing table for encoding of this field.
10
EXTCF
Extended Control Force. Must be reset to zero for both SS7 and HDLC
transparent mode
09
EXTAF
Extended Address Force. If set along with EXTA, the receiver will
assume the address to be two otets long regardless of the first bit of
the address. See EXTA below. Must be set to a 1 for SS7 operation.
Must be reset to a zero for HDLC transparent mode.
08
DACE
Disable Address and Control field Extraction. DACE should be written
with "0" for normal SS7 operation and with "1" for HDLC Transparent
mode. The MK50H27 however, has a feature to allow shifting of the
alignment of the data in the MSU buffers. If DACE is set to "1" for SS7
mode, the received LI will be placed in the first byte of the receive buff-
er, followed by the SIO in the second byte and so on. If DACE = 1, on
transmit the LI must be placed in the first byte of the transmit buffer
rather than in the SUL field of the Transmit Descriptor Entry (TMD2).
07
EXTC
Extended Control Field. Must be reset to zero for both SS7 and HDLC
transparent mode.
06
EXTA
Extended address Field. Must be set to a 1 for SS7 operation. Must
be reset to a zero for HDLC transparent mode.
1
5
1
4
1
3
0
7
0
8
1
0
1
2
0
1
0
2
0
3
0
4
0
5
0
9
0
6
LBACK
<2:0>
MFS
<4:0>
F
E
X
T
C
E
X
T
A
F
D
A
C
E
X
T
C
E
X
T
A
D
R
C
K
D
T
C
K
C
K
S
IADR + 00
NUMBER OF FLAGS
MFS<4:0>
NUMBER OF FLAGS
MFS<4:0>
1
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
1
0
2
4
9
18
5
11
22
12
25
19
7
15
31
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
28
24
17
3
6
13
27
23
14
29
26
21
10
20
8
16
MK50H27
25/56
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