Specifications

6-78 I/O Port
serts TLSB_FAULT. The catastrophic failure requires a reset of the I/O
port to return the I/O port to a known state.
6.7.11.4 Hose Status Change Errors
The IDPNSEn registers contain status information relating to the ability
of the I/O adapter to receive commands and data from the Down Hose.
These bits are <HOSEn_ERROR> and <HOSEn_PWROK>.
Either a high-to-low or a low-to-high transition of HOSEn_PWROK causes
an IPL 17 interrupt to be posted, if ICCNSE<INTR_NSES> is set. The
same is true for the assertion of HOSEn_ERROR. The assertion of
HOEn_ERROR indicates that the I/O adapter cannot receive or process
commands and must be reset through a Down Hose reset.
6.8 KFTIA Overview
The KFTIA is an integrated I/O port module. Up to three KFTIA/KFTHA
modules can be used in a system in any combination. In a system of mixed
KFTIA/KFTHA modules, slot 8 is always occupied by a KFTIA. Figure
6-33 shows the connections of the integrated I/O port.
Figure 6-33 KFTIA Connections
The integrated I/O port connects directly or supports the following compo-
nents:
• One 8-bit single-ended SCSI port (ISP 1020)
• Three 16-bit fast differential SCSI ports (ISP 1020)
• Two twisted-pair Ethernet ports (TULIP chip)
FDDI
Card
I/O Bus
Adapter
SCSI 0
SCSI 1
SCSI 2
BXB0794.AI
Integrated TLSB
I/O Port Module
NVRAM
Card
SCSI 3
(Fast, 16-bit, differential)
I/O Bus:
- XMI
- Futurebus+
- PCI
(Fast, 8-bit, single-ended)
Ethernet 1 (10 BaseT)
Ethernet 0 (10 BaseT)
FDDI (Multimode or UTP)
External
Hose
TLSB Bus