Siemens PC 670 manual Connection of an LS240 drive, Csn, Hdactn, CS1N, Csel

Hardware Information Release 04/02

Connection of an LS240 drive

The optional LS240 drive is connected via this port. This port is connected in parallel to the secondary IDE port. The connected LS240 drive is automatically master (i.e. bootable drive) as the result of a special RC circuit. The maximum connection length of the data cable may not exceed 40cm.

Pin	Short Name	Meaning	Input/
No.			Output
1	Reserved	Reserved	-
2	Reserved	Reserved	-
3	reserved	Reserved	-
4	GND	Chassis ground	-
5	RESET	Reset	Input/Output
6	D8	Data signal D8	Input/Output
7	D7	Data signal D7	Input/Output
8	D9	Data signal D9	Input/Output
9	D6	Data signal D6	Input/Output
10	D10	Data signal D10	Input/Output
11	D5	Data signal D5	Input/Output
12	D11	Data signal D11	Input/Output
13	D4	Data signal D4	Input/Output
14	D12	Data signal D12	Input/Output
15	D3	Data signal D3	Input/Output
16	D13	Data signal D13	Input/Output
17	D2	Data signal D2	Input/Output
18	D14	Data signal D14	Input/Output
19	D1	Data signal D1	Input/Output
20	D15	Data signal D15	Input/Output
21	D0	Data signal D0	Input/Output
22	DREQ	DMA request	Input
23	GND	Chassis ground	-
24	IOR_N	Read signal	Output
25	IOW_N	Write signal	Output
26	GND	Chassis ground	-
27	IORDY	Ready signal	Input
28	DACK_N	DMA confirmation	Output
29	irq15	Interrupt signal	Input
30	AD_1	Address line 1	Output
31	AD_0	Address line 0	Output
32	AD_2	Address line 2	Output
33	CS_N	Selection signal	Output
34	HDACT_N	Activity	Input
35	CS1_N	Selection signal 1
36	CSEL	Selection signal
37	GND	Chassis ground	-
38	P5V	+5V power supply	Output
39	P5V	+5V power supply	Output
40	P5V	+5V power supply	Output
41	P5V	+5V power supply	Output

7-30 Panel PC 670 Computing Unit, Equipment Manual