參數(shù)資料
型號： MK5027
廠商： 意法半導(dǎo)體
英文描述： SS7 SIGNALLING LINK CONTROLLER
中文描述： 七號信令鏈路控制器
文件頁數(shù)： 1/19頁
文件大?。?/td> 183K
代理商： MK5027
MK5027
SS7 SIGNALLING
LINK CONTROLLER
August 1989
CMOS
FULLY COMPATIBLE WITH BOTH 8 OR 16
BITSYSTEMS
SYSTEM CLOCK RATE TO 10MHz. DATA
RATE UP TO 2.5Mbps FOR SS7 PROTOCOL
PROCESSING,7Mbps FOR TRANSPARENT
HDLC MODE
COMPLETELEVEL 2 IMPLEMENTATION
COMPATIBLE WITH 1988 CCITT, AT&T,
ANSI, AND BELLCORE SIGNALLING SYS-
TEM NUMBER 7 LINK LEVELPROTOCOLS
52 PIN PLCC AND 48-PIN DIP PIN-FOR-PIN
COMPATIBLE WITH THE SGS-THOMSON
X.25 CHIP (MK5025) AND NEARLY PIN-FOR-
PIN COMPATIBLE WITH THE SGS-THOM-
SON VLANCE CHIP (MK5032)
BUFFER MANAGEMENT INCLUDES:
- Initialization Block
- SeparateReceive and Transmit Rings
- VariableDescriptor Ring and Window Sizes.
ON CHIP DMA CONTROL WITH PROGRAM-
MABLE BURST LENGTH
SELECTABLE BEC OR PCR RETRANSMIS-
SION METHODS, INCLUDING FORCED RE-
TRANSMISSIONFOR PCR
HANDLES ALL 7 SS7 TIMERS
HANDLES ALL SS7 FRAME FORMATTING:
- Zerobit insertand delete
- FCS generationand detection
- Frame delimiting with flags
PROGRAMMABLE MINIMUM SIGNAL UNIT
SPACING(number of flags betweenSU’s)
HANDLES ALL SEQUENCING AND LINK
CONTROL
SELECTABLEFCS OF 16 OR 32 BITS.
TESTING FACILITIES:
- InternalLoopback
- Silent Loopback
- OptionalInternal Data Clock Generation
- SelfTest
ALL INPUTS AND OUTPUTS ARE TTL COM-
PATIBLE
PROGRAMMABLE FOR FULL OR HALF DU-
PLEX OPERATION
DESCRIPTION
The SGS-THOMSON Signalling System #7 Sig-
nalling Link Controller (MK5027) is a VLSI semi-
conductor device which provides a complete link
control function conforming to the 1988 CCITT
version of SS7. This includes frame formatting,
transparency(so called ”bit-stufling”), error recov-
ery by two types of retransmission, error monitor-
ing, sequence number control, link status con-
trol, and FISU generation. One of the outstanding
features of the MK5027 is its buffer management
which includes on-chip DMA. This feature allows
users to handlq multiple packets of receive and
transmit data at a time. (A conventional data link-
control chip plus a separate DMA chip would han-
dle data for only a single block at a time.) The
MK5027 may be used with any of several popular
16 and 8 bit microprocessors, such as 68000,
6800, Z8000, Z80, LSI-11, 8086, 8088, 8080, etc.
DIP48
PLCC52
VSS-GND
DAL07
DAL06
DAL05
DAL04
DAL03
DAL02
DAL01
DAL00
READ
INTR
DALI
DALO
DAS
BMO, BYTE, BUSREL
BMI, BUSAKO
HOLD, BUSRQ
ALE, AS
CS
ADR
READY
RESET
VSS-GND
24
HLDA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
48
47
46
45
44
43
42
41
40
39
38
37
36
23
22
21
20
19
18
17
16
15
35
34
33
32
31
30
29
28
27
26
25
TCLK
A18
A19
A20
A21
A22
A23
RD
DSR, CTS
TD
SYSCLK
RCLK
DTR, RTS
VCC (+5V)
DAL08
DAL09
DAL10
DAL11
DAL12
DAL13
DAL14
DAL15
A16
A17
M
K
5
0
H
2
5
Figure1:
Pin Connection.
1/19
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