WACOM W4027F Tablet Controller

The WACOM W4027F is a semi-custom logic chip controlling the X-Y scan and automatic gain control of the analog front end ASICs. It doesn't seem to have any ADC as the analog signals on those models are directly fed into a Mitsubishi microcontroller.

WACOM W4027F

Pin List

Pin Name Description Pin Name Description
1 ENX01 X MUX Chip Select 33 ~WR Digital Bus, Write Enable
2 ENX02 .. 34 A16 Digital Bus, Address
3 ENX03 .. 35 A04 ..
4 ENX04 .. 36 A03 ..
5 TX5 ? 37 A02 ..
6 TX4 ? 38 A02 ..
7 TX3 ? 39 A00 ..
8 MUTE2 Mute Control, Open drain (Unused on Intuos 3) 40 D7 Digital Bus, Data
9 GND 41 GND ..
10 VDD 5VA 42 D6 ..
11 MUTE1 Mute Control, Open drain (Unused on Intuos 3) 43 D5 ..
12 TX0 TX Signal, directly driving the TX power amp 44 D4 ..
13 TX1 ? 45 D3 ..
14 TX2 ? 46 D2 ..
15 RCK2 Mixer Clock 47 D1 ..
16 RCK1 Mixer Clock 48 D0 ..
17 TR T/R Switch 49 INT Digital Bus, Interrupt out, Active Low
18 SG1 Mixer MOE 50 SG2 ADC conversion trigger out, Active Low
19 TR2 ? 51 ENY04 Y MUX Chip Select
20 GAY0 Y AFE AGC, forms a DAC with external resistors 52 ENY03 ..
21 GAY1 .. 53 ENY02 ..
22 GAY2 .. 54 ENY01 ..
23 GAX0 X AFE AGC, forms a DAC with external resistors 55 ENY00 ..
24 GAX1 .. 56 ADY2 Y MUX Pin Select
25 GAX2 .. 57 ADY1 ..
26 ENX05 .. 58 ADY0 ..
27 ENY05 .. 59 ADX0 ..
28 MCLK Clock output, used as negative supply generator 60 ADX1 ..
29 GND 61 ADX2 ..
30 L0 Status LED 62 ENX00 ..
31 L1 Status LED 63 DC Integrator discharge
32 CLK Clock input 64 CAL Self calibration signal out, connected to one terminal of the analog MUX

Known Models

  • WACOM Intuos 1 Series (GD-0405-U, GD-0608-U, etc.)
  • WACOM Intuos 2 Series (XD-0405-U, XD-0608-U, etc.)
  • WACOM Intuos 3 Series (PTZ-630, PTZ-930, etc.)
  • WACOM Intuos 4 Series (PTK-440, PTK-640, PTK-840, etc.)

References