PCM3000ESLASH2K datasheet(27/44 Pages) TI2

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t(MCH)

LSB

t(MCL)

t(MHH)

t(MCY)

t(MDH)

t(MDS)

t(MLS)

t(MLL)

t(MLH)

T0024-01

1.4 V

MAPPING OF PROGRAM REGISTERS

PROGRAM REGISTER (PCM3000)

PCM3000

PCM3001

SBAS055A – OCTOBER 2000 – REVISED OCTOBER 2004

MC pulse cycle time

t(MCY)

100 ns (min)

MC pulse duration, LOW

t(MCL)

40 ns (min)

MC pulse duration, HIGH

t(MCH)

40 ns (min)

MD setup time

t(MDS)

40 ns (min)

MD hold time

t(MDH)

40 ns (min)

ML low-level time

t(MLL)

40 ns + 1 SYSCLK(1) (min)

ML high-level time

t(MHH)

40 ns + 1 SYSCLK(1) (min)

ML setup time(2)

t(MLS)

40 ns (min)

ML hold time(3)

t(MLH)

40 ns (min)

SYSCLK (period): 1/256 fS or 1/384 fS or 1/512 fS

(1)

SYSCK: system clock cycle

(2)

ML rising edge to the next MC rising edge

(3)

MC rising edge for LSB-to-ML rising edge

Figure 30. Control Data Input Timing

B15

B14

B13

B12

B11

B10

res

LDL

AL7

AL6

AL5

AL4

AL3

AL2

AL1

AL0

res

LDR

AR7

AR6

AR5

AR4

AR3

AR2

AR1

AR0

res

PDWN

BYPS

res

ATC

IZD

OUT

DEM1 DEM0

MUT

res

LOP

FMT2

FMT1

FMT0

LRP

res

NOTE: res indicates a reserved bit, which should be set to 0.

The software mode allows the user to control special functions. The PCM3000 special functions are controlled

using four program registers which are each 16 bits long. There are four distinct registers, with bits 9 and 10

determining which register is in use. Table 3 describes the functions of the four registers.

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