PC107A datasheet(32/50 Pages) ATMEL

32 / 50 page

PC107A [Preliminary]

2137C–HIREL–03/04

Table 15 provides the two-wire interface Frequency Divider Register (I2CFDR) informa-

tion for the PC107A.

At recommended operating conditions (see Table 3 on page 12) with LV

DD = 3.3V ± 5%

Notes:

1. Values are in kHz unless otherwise specified.

2. FDR Hex and Divider (Dec) values are listed in corresponding order.

3. Multiple Divider (Dec) values will generate the same input frequency but each Divider (Dec) value will generate a unique out-

put frequency as shown in Table 16 on page 33.

Table 15. PC8240 Maximum Two-wire Interface Input Frequency

FDR Hex(2)

Divider (Dec)(2)

Max Two-wire Interface Input Frequency(1)

SDRAM_CLK/

CPU_CLK

at 25 MHz

SDRAM_CLK/

CPU_CLK

at 33 MHz

SDRAM_CLK/

CPU_CLK

at 50 MHz

SDRAM_CLK/

CPU_CLK

at 100 MHz

20, 21

160, 192

862

1.13 MHz

1.72 MHz

3.44 MHz

22, 23, 24, 25

224, 256, 320, 384

555

733

1.11 MHz

2.22 MHz

0, 1

288, 320

409

540

819

1.63 MHz

2, 3, 26, 27, 28, 29

384, 448, 480, 512, 640,

768

324

428

649

1.29 MHz

4, 5

576, 640

229

302

458

917

6, 7, 2A, 2B, 2C, 2D

768, 896, 960, 1024, 1280,

1536

177

234

354

709

8, 9

1152, 1280

121

160

243

487

A, B, 2E, 2F, 30, 31

1536, 1792, 1920, 2048,

2560, 3072

122

185

371

C, D

2304, 2560

125

251

E, F, 32, 33, 34, 35

3072, 3584, 3840, 4096,

5120, 6144

190

10, 11

4608, 5120

128

12, 13, 36, 37, 38, 39

6144, 7168, 7680, 8192,

10240, 12288

14, 15

9216, 10240

16, 17, 3A, 3B, 3C, 3D

12288, 14336, 15360,

16384, 20480, 24576

18, 19

18432, 20480

1A, 1B, 3E, 3F

24576, 28672, 30720,

32768

1C, 1D

36864, 40960

1E, 1F

49152, 61440

PC107A Datasheet(PDF) 32 Page - ATMEL Corporation

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