... the analog plusTM compa
EXAR Corporation 48720 Kato Road, Fremont, CA 94538 Phone
PRELIMINARY
DB0
DB1
DB2
DB3
DB4
DB5/SCLK
DB6/SDATA
DB7/LD
AVDD
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| C23 |
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| C24 |
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| C25 | C26 |
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| C27 | ||||||
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| 10uF |
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| 1uF |
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| 0.1uF |
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| 0.01uF |
| 0.01uF | ||
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AGND
SP
CISCLK
RLED
GLED
BLED
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| U6 |
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| DVDD |
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| 3130 | D8 |
| DVDD | 25 |
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| 32 | D7 |
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| RS* | 29 |
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| 1 | D6 |
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| 28 | DVDD |
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DGND |
| 2 | D5 |
| WEN1* | 27 |
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| WCLK2 |
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| 3 | D4 |
| WCLK | 26 |
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| 4 | D3 |
| WEN2* |
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| 5 | D2 |
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| 6 | D1 | LSB | Q8 | 24 |
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| D0 | 23 | O7 |
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| 7 | PAF* |
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| Q7 | 22 | O6 |
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| 8 |
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| Q6 | 21 | O5 |
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| STROBE |
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| PAE* |
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| Q5 |
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| 10 |
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| 20 | O4 |
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| J2 |
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| 11 | REN1* |
| Q4 | 19 | O3 |
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| STROBE | 1 | 14 | AUTOFD |
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| 12 | RCLK |
| Q3 | 18 | O2 |
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| O0 |
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| AUTOFD |
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| 13 | REN2* |
| Q2 | 17 | O1 |
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| O1 |
| 2 | 15 | INIT |
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| OE* |
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| Q1 | 16 | O0 |
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| O2 |
| 3 | 16 |
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| 14 | EF* |
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| Q0 |
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| O3 |
| 4 | 17 |
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| 15 |
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| GND | 9 |
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| O4 |
| 5 | 18 |
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| FF* |
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| O5 |
| 6 | 19 |
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| 7 | 20 |
| 1 |
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| CY7C4261 |
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| O6 |
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| U7A |
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| O7 |
| 8 | 21 |
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| RCLK |
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| 9 | 22 |
| 74HC04 |
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| U8 |
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| 10 | 23 |
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| 11 | 24 |
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| 30 |
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| 25 |
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| 12 | 25 |
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| D8 |
| DVDD |
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| 13 |
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| 2 |
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| 31 |
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| DB25 |
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| 32 | D7 |
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| RS* | 29 |
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| RST |
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| DGND |
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| 1 | D6 |
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| 28 |
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| ACK |
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| 2 | D5 |
| WEN1* | 27 |
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| WEN |
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| 3 | D3D4 |
| WCLK | 26 |
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| WCLK1 |
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| DGND |
| 54 | D2 |
| WEN2* | 23 | O7 |
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DVDD |
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| 6 | D0 | MSB | Q8 |
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| D1 |
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| 24 |
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| 7 | PAF* |
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| Q7 | 22 | O6 |
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| 8 |
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| Q6 | 21 | O5 |
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| 10 | PAE* |
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| Q5 | 20 | O4 |
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| 11 | REN1* |
| Q4 | 19 | O3 |
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C21 | C22 |
| 12 | RCLK |
| Q3 | 18 | O2 |
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0.1uF | 0.1uF |
| 13 | REN2* |
| Q2 | 17 | O1 |
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| 14 | OE* |
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| Q1 | 16 | O0 |
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| EF* |
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| Q0 |
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| 15 |
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| GND | 9 |
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| O[7..0] |
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DGND |
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| FF* |
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| CY7C4261 |
| DGND |
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| DVDD |
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| AVDD |
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| CISOUT |
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| U7B |
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| VDCEXT |
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| R24 |
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| 3 |
| 4 |
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| SPN |
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| JP3 |
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| R25 |
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| 1 |
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| 300 |
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| OPEN |
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| 74HC04 |
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| 2 |
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| JP4 |
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| U7C |
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| 3 |
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| 1 | CISOUT |
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SP |
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| R26 |
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| JUMPER |
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CISCLK |
| 5 |
| 6 |
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| CISCLKN |
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| R27 |
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| 2 | MODE |
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| 3 |
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RLED |
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| OPEN |
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| GND (ANALOG) |
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GLED |
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| 300 |
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| 4 | VCC |
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BLED |
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| 74HC04 |
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| BGND |
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| 5 | VREF |
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| U7D |
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| 3 |
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| 6 | SP |
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| R28 |
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| 7 | CISCLK |
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| 9 |
| 8 |
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| 2 | Q1 |
| R33 |
| 100 |
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| 8 |
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| LED ANODE |
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| 1 | NPN_TO18 | R342 |
| 100 |
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| 9 | BLED |
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| 10K |
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| R31 |
| 100 |
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| 10 | GLED |
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| 74HC04 |
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| GGND |
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| 11 | RLED |
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| U7E |
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| 3 |
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| 12 | GND (FRAME) |
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| 11 |
| 10 |
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| R29 | 2 |
| Q2 | C28 |
| C29 |
| C30 | C33 HEADER 12 TO CIS | DGND | AGND |
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| DVDD |
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| 10K |
| 1 | NPN_TO18 | 100uF |
| 0.1uF |
| 47uF | 47uF |
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| 74HC04 |
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| RGND |
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| 14 |
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| U7F |
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| R30 |
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| 3 | DGND |
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| AGND | H:\PROJECT\ORCADWIN\9827\9827REFB.DSN |
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| 13 |
| 12 |
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| 2 | Q3 |
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| NPN_TO18 |
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| C31 | 7 |
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| 10K |
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| 1 |
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| Title |
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| 74HC04 |
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| XRD9827 REFERENCE BOARD |
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| 0.1uF |
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| Size | Document Number |
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| Rev |
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| DGND |
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| B | XRD9827REF |
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| B |
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| DGND |
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| Date: | Thursday, July 23, 1998 | Sheet | 3 | of | 3 | ||
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