Sharp Aquos LC-42X20E, Service Manual

Page: 91 / 192

LC-32X20E/S/RU, LC-37X20E/S/RU
5 – 19
2.11. IC7507 (VH+-1Q)
2.11.1 Block Diagram
89, 94, 109, 115, 116,
117, 118, 124, 126, 127,
129, 130, 131, 132, 133,
134, 135, 136, 137, 138,
139, 140, 141, 142, 143,
144 VSS — Ground for the input buffers and core logic.
45, 47, 70, 72, 74, 76, 77,
79, 83, 84, 86, 87, 96, 97,
99, 100 VDDQ — Isolated power supply for the output buffers to provide improved noise immunity.
36, 43, 81, 102, 103, 104,
107, 108, 110, 111, 112,
113, 114, 119, 120, 121,
122, 123, 125, 128 VSSQ — Isolated ground for the output buffers to provide improved noise immunity.
23 VREF — Reference voltage for inputs, used for SSTL interface.
93, 61 RFU1/RFU2 — Reserved for Future Use.
13, 24, 25, 54, 55, 64, 73,
80, 85, 98 NC — No Connection.
Pin No. Pin Name I/O Pin Function