MFC2000 datasheet(153/426 Pages) ETC

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Hardware Description

MFC 2000 Multifunctional Peripheral Controller 2000

100723A

Conexant

7-5

Bit 15-8

Shift Enable[7:0]

These bits are used to shift scanner controller signals by ½ ihsclk. By

default, all scanner controller signals are synchronized to the rising

edge of ihsclk. By setting this bit, the corresponding scanner controller

signal will be shifted by ½ ihsclk, i.e., it will be synchronized to the

falling edge of ihsclk.

ShiftEnb[7]: to shift ‘sample’ signal

ShiftEnb[6:1]: to shift ‘scctrl[6:1]’ signals

ShiftEnb[0]: to shift ‘clamp’ signal

Bit 2

VSC on EV bus

When this bit is set, the “EV_VD[5:0]” bus will be turned into output

with the following signals on the bus:

EV_VD[5:0]

Output signals

ScanIAConfig[5] as GPO

ScanIAConfig[4] as GPO

sample/clk2d

clk1/clk2c

clk1/clk2b

clamp

Bit 1

ihsclk period

0: ihsclk period = sysclk period

1: ihsclk period = sysclk period/2)

This bit determines the period of ihsclk (the primary clock of VSC).

Bit 0

VSC Mode

0: scanner

1: video

This mode will determine the source of data.

Name/Address

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default

Scan Cycle

(ScanCycle)

$01FF8891

(Not Used)

MSINT IRQ location

Rst. Value

xxx11111h

Read Value

1Fh

Name/Address

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default

Scan Cycle

(ScanCycle)

$01FF8890

(Not Used)

Scan Cycle (n)

MSINTs per Scan Cycle = (n+1)

Rst. Value

xxx00000b

Read Value

00h

Bits 12-8 MSINT IRQ location

The value written here is double-bufferred. At the beginning of a scan

cycle, the value will be transferred into another buffer which is

compared to a scan cycle counter. If the value in the buffer matches

the value in the counter, then an interrupt will be generated (if it is

enabled) at the beginning of the count.

Bits 4-0

Scan Cycle

(n, n = 0-31; MSINTs per scan cycle = n+1)

The value written here is double-buffered. At the beginning of a scan

cycle, the value will be transferred into another buffer.

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