Pin Description 3
3 Pin Description
3.1 Pin Assignment
Pin Signal Name In/Out Description Source / Destination
XCS Chip-Select
C32 Mode (2K Byte RAM): connect to VDD
C165 Mode: CS-Signal
1
AB11
I(C)
Address Bus 11 (C32-Mode; 4K Byte RAM)
CPU (80C165)
XWR / E_CLOCK Write Signal / E_Clock for Motorola
2
AB11
I(C)
Address Bus 11 (Asynchronous Motorola Mode; 4K Byte RAM)
CPU
3 DIVIDER I(C)
Setting the scaling
factor for CLKOUT2/4
‘0’ = CLK divided by 4
’1’ = CLK divided by 2
Configuration Pin
4 XRD / R_W I(C) Read Signal / Read _Write for Motorola CPU
5 CLK I(TS) System Clock Input, 48 MHz System
6 VSS
7 CLKOUT2/4 O Clock Output (System Clock divided by 2 or 4) System, CPU
8 XINT/MOT I(C)
‘0’ = Intel Interface
’1’ = Motorola Interface
Configuration Pin
9 X/INT O Interrupt
CPU; Interrupt-
Controller
10 AB10 I(CPD) Address Bus
C32 Mode: ‘0’
C165 Mode: Address Bus
System, CPU
11 DB0 I(C)/O
12 DB1 I(C)/O
Data Bus
C32 Mode: Data/Address Bus multiplexed
C165 Mode: Data/Address Bus separated
CPU, Memory
XDATAEXCH Indicates DATA-EXCH state for PROFIBUS DP LED
13
SYNC
O
Synchronization Signal for Isochron Mode (see section 8.3.2) CPU
14 XREADY/XDTACK O Ready for external CPU System, CPU
15 DB2 I(C)/O
16 DB3 I(C)/O
Data Bus
C32 mode: Data /Address Bus multiplexed
C165 mode: Data/Address Bus separate
CPU, Memory
17 VSS
18 VDD
19 DB4 I(C)/O
20 DB5 I(C)/O
21 DB6 I(C)/O
22 DB7 I(C)/O
Data Bus
C32 mode: Data/Address Bus multiplexed
C165 mode: Data/Address Bus separate
CPU, Memory
23 MODE I
‘0’ = 80C166 Data/Address Bus separated; Ready Signal
’1’ = 80C32 Data/Address Bus multiplexed, fixed Timing
Configuration Pin
ALE / AS
Address Latch
Enable
C32 mode: ALE
C165 mode: ‘0’ (2K Byte RAM)
24
AB11
I(C)
Address Bus 11 (Asynchronous Intel and
Synchronous Motorola Mode; 4K Byte RAM)
CPU
25 AB9 I Address Bus
C32 Mode: <log>0
C165 Mode: Address Bus
CPU, Memory
26 TXD O Serial Transmit Port PROFIBUS Interface
27 RTS O Request to Send PROFIBUS Interface
28 VSS
29 AB8 I(C) Address Bus
C32 mode: ‘0’
C165 mode: Address Bus
CPU, Memory
VPC3+C User Manual
Revision 1.03 9
Copyright © profichip GmbH 2004-2006
To Next Page
Loading...