UPD360 datasheet(166/221 Pages) MICROCHIP

166 / 221 page

UPD360

DS00002084C-page 166

 2016-2017 Microchip Technology Inc.

11.4.4.9

BMC RX Squelch Assert Time Register (BMC_RX_SQL_ASSERT_TIME)

The value of this register is used by the BMC decoder to determine when there is a valid signal. If three edges of the

receive signal are seen within this time, then the “squelch” goes active. This time should take into account the minimum

bit rate but does not need to account for the duty cycle distortion of the received signal.

11.4.4.10

BMC RX Squelch Hold Time Register (BMC_RX_SQL_HOLD_TIME)

The value of this register is used by the BMC decoder to provide time for the CDR circuit to output the final bit of data.

A typical hold time would be 1 maximum half bit time pulse desired tolerance.

Address:

1AA8h

Size:

8 bits

Bits

Description

Type

Default

7:0

BMC_RX_SQL_ASSERT_TIME

Time in clock cycles x 4 at minimum bit-rate.

assert time uS = (BMC_RX_SQL_ASSERT_TIME x 4 + 1) / clock_freq MHz

A typical assert time would be 3 maximum half bit times plus desired toler-

ance.

Note:

A value of 70 (decimal) is recommended for this field.

R/W

00h

Address:

1AA9h

Size:

8 bits

Note:

The Squelch Drop time is based on the BMC RX Maximum High and Low Time registers.

Bits

Description

Type

Default

7:0

BMC_RX_SQL_HOLD_TIME

Time in clock cycles x 4 at minimum bit-rate.

hold time uS = (BMC_RX_SQL_HOLD_TIME x 4 + 1) / clock_freq MHz

typical value = ((1 / 2) * ((clock_freq_KHz / min_bit_rate_Kbps) *

(100 + tolerance) / 100) - 1) / 4

Note:

A value of 23 (decimal) is recommended for this field.

R/W

00h

UPD360 bảng dữ liệu(PDF) 166 Page - Microchip Technology

UPD360 bảng dữ liệu(HTML) 166 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL