Sharp FACSIMILE FO-4500 Service Manual page 155

IC22: VHiTLS1049/-1 (TLS1049)
1 SEL AVCC
2 VREF+ DVCC
3 AVO PGST
4 VRLM B-/H
5 VRHF GTW-
6 PHCAP PHIBL-
7 CLPB B5
8 CLPF B4
9 SHCAP B3
10 VO B2
11 M-EX B1
12 VI B0
13 VC ADCK
14 VH PHISH-
15 AGND DGND
No Terminal Name
30
1 SEL
29
2 VREF+
28
3 AVO
4 VRLM
27
26
5 VRHF
6 PHCAP
25
7 CLPB
24
8 CLPF
9 SHCAP
23
10 VO
22
11 M-EX
21
12 VI
13 VC
20
19 14 VH
18
15 AGND
16 DGND
17
17 PHISH
16
18 ADCK
19 B0
20 B1
21 B2
22 B3
23 B4
24 B5
25 PHIBL
26 GTW
27 B/H
28 PGST
29 DVCC
30 AVCC
(Note 16) The abbreviations in the column of "Type" are as follows; IN: Input, OUT: Output, I/O:
Input/Output, A: Analog, D: Digital, PS: Power supply pin.
Type
IN D Input pre-amp gain switching terminal.
L: Internal, H: External
OUT A VREF upper voltage monitor terminal for AD.
OUT A AD input monitor terminal.
IN A In the binary mode, upper voltage minimum limit setting
terminal for AD.
IN A In the halftone mode, upper voltage setting terminal for AD.
I/O A External capacitor connecting terminal for AGC.
IN A DC clamp, offset canceler, and signal input.
OUT A Sample hold buffer output.
I/O A For sample hold, external capacitor connecting terminal.
OUT A Input pre-amp output
IN A When setting the external gain, minus input of input pre-amp.
IN A Video signal input.
I/O A Internal reference voltage smoothing terminal.
External capacitor 1µF connection.
OUT A Voltage output for VRHF and VRLM generation.
Terminal voltage: 3.65V
PS – Analog GND power supply.
PS – Digital GND power supply.
IN D Control input for sample hold. L: Sample, H: Hold
IN D Reference clock input for AD converter.
OUT D AD converter data output B0. LSB
OUT D AD converter data output B1.
OUT D AD converter data output B2.
OUT D AD converter data output B3.
OUT D AD converter data output B4.
OUT D AD converter data output B5. MSB
IN D Control input for DC clamp. L: Clamp
IN D Binary setting voltage switching control input for AGC.
H: Binary minimum limit, L: AVO
IN D Halftone, binary setting voltage switching terminal for AGC.
H: Halftone, L: Binary minimum limit, AVO
IN D External capacitor discharge control input for AGC.
L: Discharge
PS – Digital VCC power supply.
PS – Analog VCC power supply.
8 – 12
FO-4500H
Function