Ricoh AR-B1045 - Manual (Page 7)

AR-B1045 User’s Guide
AR-B1045 7
2.2 Operation mode selection
• J1 : jumper setting
•
Operation mode description
2.3 Voltage selection
•
JP1 : Chip Voltage selection
Note: RICOH R5C486 ->2.5V R5C586 -> 3.3V
Pin DESCRIPTION
1-2,3-4 open Mode 0
1-2 open,3-4 short Mode 1
1-2 short,3-4 open Mode 2
1-2,3-4 short Mode 3
PCICLK IDSEL INT 0 INT 1 REQ GNT
Mode 0 PCICLK0 AD20 A B REQ0 GNT0
Mode 1 PCICLK1 AD21 B C REQ1 GNT1
Mode 2 PCICLK2 AD22 C D REQ2 GNT2
Mode 3 PCICLK3 AD23 D A REQ3 GNT3
PIN DESCRIPTION
1-2 +3.3V
2-3 +2.5V