AMT Datasouth Accel-7350 Service Manual page 76

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BBG020 pin assignment
Port Explanation
(1) A0-A5 (Input): Address bus.
(2) D0-D7 (I/O): Data bus.
(3) XCSIN (Input): Chip select.
(4) XRD, XWR (Input): Read signal, write signal.
(5) IREQ1 (Output): This signal turns to "High" at sensor interrupt. Refer to CPU INT3 item.
(6) DS1, 4, 5(Input): Sensor input.
(7) AUXO1-3 (Output): For setting LF motor current.
(8) SYNC0 (Input): Clock for C motor rotation, detects the edge of this signal and turns C motor.
(9) SYNC1 (Input): Clock for LF motor rotation. Detects the edge of this signal and turns LF
motor.
(10) BUZZ (Output): Signal for piezoelectric buzzer drive.
(11) HCA, HCB, HCXA, HCXB (Output, open-drain): Signal for C motor drive.
(12) HCDR0-4(Output): For setting C motor current.
(13) LFA, LFB, LFXA, LFXB (Output, open-drain): Signal for LF motor drive.
(14) LFDR0-LFDR2 (Output): For setting LF motor current.
(15) RBA, RBB, RBXA, RBXB (Output, open-drain): Signal for Ribbon motor drive.
(16) RBDR0-RBDR1 (Output): For setting ribbon motor current.
(17) HAA, HAB, HAXA, HAXB (Output, open-drain): Signal for HA motor drive.
(18) HADRO (Output): For setting HA motor current.
(19) MCA, MCB, MCXA, MCXB (Output, open-drain): Signal for MC motor drive.
(20) XRESET (Input): Reset signal.
(21) XIN(Input): 12.5 MHz clock.
Gate array BBG030
QFP, 100pin. Acts at 12.5 MHz. Access is possible with addresses 0000C0h-0000FFh.
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