YTD427 Datasheet, PDF (10/23 Pages) List of Unclassifed Manufacturers – ISDN DSU Analog Front End

8
CHAPTER 3. PIN DESCRIPTIONS
3.2 Pin Functions
Pin No. Pin Name I/O
Function
Remarks
1 SGB
0
Connect a 0.015F capacitor across the
SGB and SGR pins.
2 SGBP
0 ^{CSGonBnPecatnda} _S0G.0R15p^_{iFns.capacitor} ^{across the}
3 SXA
0 Connected to SXB.
4 SXB
0 Connected to SXA.
5, 48, 58, 59 AV_SS GND Analog ground
All pins must
btoegethejro.ined
6, 26, 27, 47 DV_SS GND Digital ground
Abell pinsjominuesdt
together.
7 NC1
IN
Unused
Connected to DV_SS
8 NC2
IN
Unused
Connected to DV_SS
9 NC3
IN
Unused
Connected to DV_SS
10
TEST5
IN
Test input 5
Connected to DV_SS
11 A1
IN
Address bus bit 1
Connected to ADDRES1 of YTD426B
12 A0
IN
Address bus bit 0
Connected to ADDRES0 of YTD426B
13
TEST6
IN
Test input 6
Connected to DV_SS
Read/write signal
14 RWN
IN
\H" : Read
\L" : Write
Connected to RWN of YTD426B
Strobe signal
15
STRBN
IN
\H" : Inactive
\L" : Active
Connected to STRBN of YTD426B
16, 17, 36, 37 DV_DD PWR Digital power supply
All pins must
btoegethejro.ined