82C881 Datasheet, PDF (37/46 Pages) List of Unclassifed Manufacturers – FireLink 1394 OHCI Link Controller

FireLink 1394 OHCI
®
82C881
8.0 Test Modes
TMS must be high for Normal Operation. To select Test Mode, set TMS low and assert RST#.
In Test Mode, TEST# operates as follows.
0 = Scan Mode
1 = NAND Tree Test Mode
Once Scan Mode has been selected, TEST# is used as the scanEnable signal, selecting between shift and capture cycle
during scan operation.
TMS
1
0
0
TEST#
X
1
0
Operation
Normal mode
Nand Tree mode ( Shift cycle in scan mode )
Scan Mode( Capture cycle in scan mode )
Signal Name
TMS+CYCLEIN
CYCLEOUT# + TEST#
PCICLK + TSCLK_PCI
GPIO2+TSCAN_IN2
GPIO3+TSCAN_IN3
IDSEL+TSCAN_IN4
REQ#+TSCAN_OUT2
PERR#+TSCAN_OUT4
SERR#+TSCAN_OUT3
PHYSCLK+TSCLK_PHY
LINKON+TSCAN_IN1
LINKREQ+TSCANOUT1
Pin No.
78
77
12
2
3
29
15
49
51
95
98
97
Signal Type
In Scan Mode
I
I
I
I
I
I
O
O
O
I
I
O
Signal Description
Test Mode Select
Test Scan Enable
Scan Test CLK for 3 PCI Trunks
Scan Test Input for PCI Trunk1
Scan Test Input for PCI Trunk2
Scan Test Input for PCI Trunk3
Scan Test Output for PCI Trunk1
Scan test Output for PCI Trunk3
Scan test output for PCI Trunk2
Scan Test CLK for PHY Trunk
Scan Test input for PHY trunk
Scan Test Output for PHY Trunk
912-2000-031
Revision: 1.0
Page 33