DSA504RT datasheet(22/73 Pages) MICROCHIP

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DSA504RT

Preliminary Data Sheet

DS50004033A - 22

4:0

sel_gpio0_func

GPIO0 pin function select. All decodes make GPIO0 an input that

controls something except 17-21.

0 = None

1 = OUT0 output enable (GPIO0 = 1 for output enabled, same for

enables below)

2 = OUT1 output enable

3 = OUT2 output enable

4 = OUT3 output enable

5 = OUT4 output enable

6 = OUT5 output enable

7 = OUT0-OUT5 output enable

8 = OUT0-OUT2 output enable

9 = OUT3-OUT5 output enable

10 = FS0 (frequency select 0) for back-end (i.e. output) dividers with A vs

B frequency plan indicated by sel_bank_bed[5:0] register bits.

11 = FS1 (frequency select 1) (GPIO0 = 0 for A frequency plan, GPIO0 = 1

for B frequency plan for entire device)

12 = Spread spectrum enable for FDIV1 (GPIO0 = 1 for enabled)

13 = Spread spectrum enable for FDIV2

14 = Spread spectrum enable for FDIV1 and FDIV2

15 = Spread spectrum modulation frequency multiple for FDIV1 and

FDIV2 (GPIO0 = 0 for 1x, GPIO0 = 1 for 2x)

16 = Reference select (This option is not available on DSA504RT)

17 = PLL loss of lock output

18 = PLL loss of source output

19 = Temperature sensor out of range output

20 = OTP checksum failure output

21 = CLKIN monitor out of range output

28 = Synchronize back end dividers in same frequency plan (A or B) on

0-to-1 transition

30 = Low-power standby mode

31 = I2C client address least-significant bit

Only one GPIO can be configured for each input control function.

Only one GPIO can be configured to have output enable control for

each of OUT0-OUT5. Only one GPIO can be configured to have spread

spectrum enable control for each of FDIV1 and FDIV2. OTP failure sets

GPIO0=1 but does not stop the device.

Address:

Name:

Default:

Type:

0x0052

config_0x52

0x00

R/W

Bit Field

Function Name

Description

fusa_clr_lol

FUSA FAULT0 PLL_LOL clear trigger signal.

0 = normal operation

0->1 transition clears flag

6:5

fusa_cnt_xclk

FUSA FAULT6 CLKMON consecutive hits before setting the flag.

0 = 4 (default)

1 = 8

2 = 16

3 = 32

DSA504RT Datasheet(PDF) 22 Page - Microchip Technology

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