MFC2000 datasheet(154/426 Pages) ETC

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MFC2000 Multifunctional Peripheral Controller 2000

Hardware Description

7-6

Conexant

100723A

Notes

Bits [4:0] of this register specify the number of MSINTs (1-32) per Scan Cycle.

Total Scan Cycle Period = [MSINT period * (ScanCycle register value + 1)].

The transition from maximum count to 0 determines the start of a scan cycle.

Reading bits [4:0] of this register returns the current scan cycle MSINT count.

This register must be set up prior to enabling the scan (i.e., setting the “scanenable” bit in

ScanConfig register).

Name/Address

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default

Scan

Configuration

(ScanConfig)

$01FF8893

MSINT

IRQ

Enable

scctrl[6]

invert

scctrl[5]

invert

scctrl[4]

invert

scctrl[3]

invert

scctrl[2]

invert

scctrl[1]

invert

scctrl[0]

invert

Rst. Value

00h

Read Value

00h

Name/Address

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default

Scan

Configuration

(ScanConfig)

$01FF8892

(Not Used)

External

ADC

Enable

scctrl[6]

select

0: clk1

1: clk2c

scctrl[5]

select

0: clk1

1: clk2b

scctrl[4]

select

0: clk1

1: clk2a

scctrl[3]

select

0: led2

1: start

scctrl[2]

select

0: led1

1: start

Scan

Enable

Rst. Value

xx000000b

Read Value

00h

Bit 15

MSINT IRQ Enable

When this bit and ScanEnable bit are set, an interrupt will be

generated based on the MSINT IRQ location defined in ScanCycle

Bit 14-8

scctrl[6:0] invert

These bits are used to invert the polarity of the corresponding control

signal.

Bits 6 External ADC Enable

0 = internal ADC as the source of adc data

1 = external ADC as the source of adc data

Bit 5-1 scctrl[6:0] select

These bits are used to configure which scanner controller signals

should be connected to the pins.

Bit 0 Scan Enable

This bit must be set in order to activate the scanner controller logic.

Name/Address

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default

Scan Dot

Control

(ScanDotCtrl)

$01FF8895

(Not Used)

Rst. Value

xxh

Read Value

00h

Name/Address

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default

Scan Dot

Control

(ScanDotCtrl)

$01FF8894

Scan Dot Scaler Value (0-15)

n as used in the following equation:

(n+1)*IHSCLK

Scan Dot Period (1-15)

n as used in the following equation:

(n+1)*ScanDotScaler

Rst Value

00h

Read Value

00h

Bits 7-4

ScanDotScaler

(n: 0-15), (n+1) * IHSCLK period

Bits 3-0

ScanDotPeriod

(n: 1-15), (n+1) * ScanDotScaler

Note: ScanDotPeriod = 0 is not allowed.

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