SCAN921025 National Semiconductor Corporation, SCAN921025 Datasheet - Page 4

• Manufacturer Part Number: SCAN921025
• Description: 30-80 Mhz 10 Bit Bus Lvds Serializer And Deserializer With Ieee 1149.1 Jtag And At-speed Bist
• Manufacturer: National Semiconductor Corporation

www.national.com
Test Modes
system clocks (At a SCLK of 66Mhz and TCK of 1MHz this
allows for 66 TCK cycles). This is not a concern when both
devices are on the same scan chain or LSP, however, it can
be a problem with some multi-drop devices. This test mode
has been simulated and verified using National’s SCAN-
STA111.
DIN0 Held Low-DIN1 Held High Creates an RMT Pattern
DIN4 Held Low-DIN5 Held High Creates an RMT Pattern
(Continued)
FIGURE 1. RMT Patterns Seen on the Bus LVDS Serial Output
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Ordering Information
DIN8 Held Low-DIN9 Held High Creates an RMT Pattern
NSID
SCAN921025SLC
SCAN921226SLC
Deserializer
Function
Serializer
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Package
SLC49a
SLC49a