stlc5464 STMicroelectronics, stlc5464 Datasheet - Page 28

• Manufacturer Part Number: stlc5464
• Description: Multi-hdlcwith Switching Matrix Associated
• Manufacturer: STMicroelectronics

STLC5464
III - FUNCTIONAL DESCRIPTION (continued)
Figure 11 : D, C/I and Monitor Channel Path
III.4 - Microprocessor Interface
III.4.1 - Description
The Multi-HDLC circuit can be controlledby severa
types of microprocessors (ST9, Intel/Motorola 8 or
16 data bits interfaces) such as :
- ST9 family
- INTEL 80C188 8 bits
- INTEL 80C186 16 bits
- MOTOROLA 68000 16 bits
During the initialization of the Multi-HDLC circuit,
the microprocessor interface is informedof the type
of microprocessor that is connectedby polarisation
of three external pins MOD 0/2).
Two chip Select (CS0/1)pins are provided.CS0 will
select the internal registers and CS1 the external
memory.
28/83
GCI1
DIN 5
GCI0
DIN 4
from Tx HDLC
D Channels
16 Rx
C/I
CONTR OLLER
INTERRUPT
GCI CHANNEL DEFINITION
0
1
2
3
4
5
6
7
16 Rx
MON
Internal Bus
SWITCHING
MATRIX
Table 14 : Microprocessor Interface Selection
III.4.2 - Definition of the Interface for the differ-
ent microprocessors
The signals connectedto the microprocessor inter-
face are presented on the following figures for the
different microprocessor (see Figures 12, 13, 14,
15, 16 and 17 on Pages 29-30).
MOD2
Pin
16 Tx
0
1
1
0
0
C/I
MOD1
0
1
2
3
4
5
6
7
Pin
1
1
0
0
0
16 Tx
MON
D Cha nnels
to Rx HDLC
MOD0
Pin
GCI0
1
1
0
0
1
DOUT 4
GCI1
Microprocessor
DOUT 5
Reserved
80C188
80C186
68000
ST9