YTD427 Datasheet, PDF (12/23 Pages) List of Unclassifed Manufacturers – ISDN DSU Analog Front End

10
CHAPTER 3. PIN DESCRIPTIONS
Pin No. Pin Name I/O
Function
Remarks
38 ADCK
IN
ADC operation clock signal
Connected to CLK640K of YTD426B.
39
TEST4
IN
Test input 4
Connected to DV_SS.
40
TEST3N
I/O
Test input 3
Usually xed to "H".
41
TEST2
IN
Test input 2
Connected to DV_SS.
42
TEST1
IN
Test input 1
Connected to DV_SS.
43
TEST0
IN
Test input 0
Connected to DV_SS.
Reset input pin
44 RSTN IN \L" : Reset
Reset time is 2s(minimum)
45 FTHN
IN
Test input
Usually xed to "H".
46 NC4
IN
Unused
Connected to DV_SS.
49 VRBS OUT ADC reference power supply output (low voltage)
50 VRB
IN ADC reference power supply input (low voltage)
51 VRT
IN ADC reference power supply input (high voltage)
52 VRTS OUT ADC reference power supply output (high voltage)
53, 54, 62, 63 AV_DD PWR Analog power supply
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55 ATEI
IN
Test signal input
Connected to AV_SS.
56
ATEO
I/O
Test signal input, output
Connected to AV_SS.
57 SGR
OUT Analog signal reference output
60 RXU
IN Receive signal input
61 SGA
0 _SCGonRn.ect ^{a 0.0047F capacitor across SGA and}
64 RXS
0
Connect
SGR.
a
0.0022F
capacitor
across
RXS
and