YTD428_07 YAMAHA [YAMAHA CORPORATION], YTD428_07 Datasheet - Page 11

• Manufacturer Part Number: YTD428_07
• Description: IDSU ISDN DSU for Terminal Equipment
• Manufacturer: YAMAHA [YAMAHA CORPORATION]

Note 1 When not using TTL interface, set HTD, LTD pins as bellow.
Note 2 When using the YTD428 on a terminal with built-in DSU, it is recommended that fixed timing be selected for the sample
Note 3 When using NTSEL, external terminating resistor setting is required.
Note 4 Set LOCAL = “L” when LPSEL = “L” or CLKSEL = “L”.
P
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When TDP = “H”, set HTD, LTD = “L”
When TDP = “L”, set HTD, LTD = “H”
timing of T reference point receive data (TSMPSEL=“H” and TSMPAUT=“H”). This is because the bus distribution form
becomes a short passive bus in this case.
When NTSEL = “H”, terminating resistor is required.
When NTSEL = “L”, remove terminating resistor as necessary.
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