Unisys manual IOM Physical Organization, NX5820 K IOM Organization

How the IOM Is Organized

Domain 0

MSM

IOM

KIUB

CIOM		CIOM	* *	CIOM	CIOM	CIOM
			CIOM
	*
		4 CSBs		4 CSBs	4 CSBs	4 CSBs
4 CSBs

Domain 1

MSM

IOM

KIUB

CIOM		CIOM	** *	CIOM	CIOM	CIOM
			CIOM
	*
		4 CSBs		4 CSBs	4 CSBs 4 CSBs
4 CSBs

*

* *

** *

2 of 4 busses can drive Internal and External Channels.

0710A

Optionally dedicated for Multi-IOU functionality

Optionally dedicated for TCU functionality

Figure 5–2. NX5820 K IOM Organization

IOM Physical Organization

Each NX5820 and NX5820 K domain contains a front and rear card module assembly with specific locations for the IOB or KIUB, CIOMs, and internal channel rack. See Figure 5–3 for card module assembly for the NX5820 and Figure 5–4 for NX5820 K.

The front card module assembly contains:

•One card slot per domain accepts a 6U IOB or KIUB card (slot A5 for Domain 0, slot B5 for Domain 1).

The rear card module assembly contains:

•One card slot per domain accepts the first 9U CIOM card (slot A4 for Domain 0, slot B4 for Domain 1).

•For NX5820, one card slot per domain for the middle 9U CIOM card dedicated for IOU functionality (slot A6 for domain 0, slot B6 for domain 1). Optional card slots per domain for the second, third, and fourth 9U CIOM cards (slot A5, A7, and A8 for Domain 0, slot B5, B7, and B8 for Domain 1).

•For NX5820 K, optional card slots per domain for the second, third, fourth, fifth, and sixth 9U CIOM cards (slot A5, A6, A7, A8 and A9 for Domain 0, slot B5, B6, B7, B8, and B9 for Domain 1).

•Twelve 3U card slots per domain within the internal channel rack to accept channel cards. Eight 3U card slots (lower rows) can be converted into 6U card slots.

•Each CS-bus interface can support up to sixteen channel loads (see ”Assigning Channel Loads”).

•The first CIOM per domain (slot A4 for Domain 0, slot B4 for Domain 1) can support up to four CS-Busses plus two internal busses as follows:

7017 6300–005 5–3