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Pinout and signal descriptions
28
NS9750 Hardware Reference
bist_en_n, pll_test_n, and scan_en_n
Table 7 is a truth/termination table for bist_en_n, pll_test_n, and scan_en_n.
PCI interface
The PCI interface can be set to PCI host or PCI device (slave) using the pci_central_rsc_n
pin.
Note:
All output drivers for PCI meet the standard PCI driver specification.
Normal operation ARM debug
pll_test_n pull up pull up 10K recommended
bist_en_n pull down pull up 10K pullup = debug
2.4K pulldown = normal
scan_en_n pull down pull down 2.4K recommended
Table 7: bist_en_n, pll_test_n, & scan_en_n truth/termination table
Pin # Signal name U/D
OD
(mA) I/O Description
J24 ad[0]
1
N/A I/O PCI time-multiplexed address/data bus
H26 ad[1]
1
N/A I/O PCI time-multiplexed address/data bus
J25 ad[2]
1
N/A I/O PCI time-multiplexed address/data bus
J26 ad[3]
1
N/A I/O PCI time-multiplexed address/data bus
K24 ad[4]
1
N/A I/O PCI time-multiplexed address/data bus
K25 ad[5]
1
N/A I/O PCI time-multiplexed address/data bus
K26 ad[6]
1
N/A I/O PCI time-multiplexed address/data bus
L24 ad[7]
1
N/A I/O PCI time-multiplexed address/data bus
L26 ad[8]
1
N/A I/O PCI time-multiplexed address/data bus
M24 ad[9]
1
N/A I/O PCI time-multiplexed address/data bus
M25 ad[10]
1
N/A I/O PCI time-multiplexed address/data bus
M26 ad[11]
1
N/A I/O PCI time-multiplexed address/data bus
Table 8: PCI interface pinout