Unified Fieldbus Controller UFC100-L2 – Basic mode operation
Page 3
Rev. 1.0
Proprietary and confidential information of Aniotek Inc.
21 May 2018
Table 1: UFC100-L2 Pin out
Pin
no.
Name
Type
Reset
value
Description
1 A4
ICH
CPU Address bus
2 RDn/EDSn
ICH
Read Strobe (Intel mode), E or DSn (Freescale mode)
3 WRn/RWn
ICH
Write Strobe (Intel mode), RWn – Read or Write select (Freescale
mode)
4 CSn
ICH
Chip Select – active state enables Read or Write access.
5 CLKIN
ICH
Clock input – the frequency has to be one of 1, 2, 4 or 8 Mhz.
6 Vss
P
Power negative side
7 RESETn
ICH
Reset – active (low).
8 A5
ICH
This pin can be connected to CPU address A5, or to Vdd or Vss.
9 A6
ICH
This pin can be connected to CPU address A6, or to Vdd or Vss.
10 MS2
ICH
Reserved for test use; connect it to Vss.
11 INTn
O
H
Interrupt request to the CPU
12 RES0
O
L
Reserved
13 RES1
O
L
Reserved
14 RES2
O
L
Reserved
15 TxA
O
L
It is used as TxA output, which is high while transmitter is active.
16 TxRn
O
H
Low pulse of 8 µs duration whenever TxS changes.
17 Vdd
P
Power plus side
18 Vss
P
Power negative side
19 TxS
O
L
Transmit signal to medium attachment unit
20 TxEn
O
H
Transmit control to medium attachment unit
21 RxS
ICH
Receive Signal from medium attachment unit
22 RxA
ICH
Receive activity (carrier detect) from medium attachment unit
23 TST0
ICH
Test input; connect to Vss in normal operation.
24 FLT1n
ICH
Not used – this pin can be connected either Vss or Vdd.
25 RQ
O
L
DMA request output, one pulse per byte to be transferred
26 FLT0n
ICH
Not used – this pin can be connected either Vss or Vdd.
27 RDY
DACKn
O
H
H
ATYP high: low value indicates that the data is ready or accepted.
ATYP low: high value indicates that the data is ready or accepted.
28 Vss
P
Power negative side
29 D0
BCH
TS
CPU Data bus
30 D1
BCH
TS
CPU Data bus
31 D2
BCH
TS
CPU Data bus
32 D3
BCH
TS
CPU Data bus
33 D4
BCH
TS
CPU Data bus
34 D5
BCH
TS
CPU Data bus
35 D6
BCH
TS
CPU Data bus
36 D7
BCH
TS
CPU Data bus
37 CTYP
ICH
Type of CPU – Low: Intel,
High: Freescale
38 ATYP
ICH
Type of bus access – Low: RDY output,
High: DACKn output
39 Vdd
P
Power plus side
40 Vss
P
Power negative side
41 A0
ICH
CPU Address bus
42 A1
ICH
CPU Address bus
43 A2
ICH
CPU Address bus
44 A3
ICH
CPU Address bus