1.2.9

Serial Communication: Monitoring Mode

When MODE0 and MODE1 input pins are configured to serial monitoring mode (01), the PD69101 continuously and

repeatedly transmits out the content of nine internal registers.

• Data out stream is transmitted through LED1 (pin 14)

• Clock out stream is transmitted through LED0 (pin 13)

• Data stream is shifted out with a 1 MHz clock (1 μsec)

• Total transaction packet length is 116 μsec

• The transmission is repeated every 1 msec

• Between transactions, the clock is held low while the data stream out is stable high/low.

Note:  To exploit LED1 and LED0 to communicate and monitor transmissions, use a 1 KΩ pull-up resistor to the

DVDD.

The following table lists the stream out data transmits of 116 bits, starting from MSB to LSB.

Table 1-1. Serial Monitoring Mode

MSB

LSB

Internal 0 Internal 1 Internal 2 Internal 3 Internal 4 VPORT

VMAIN

IPORT

Port Status

13 bits

10 bits

23 bits

16 bits

16 bits

10 bits

10 bits

13 bits

5 bits

78 internal signals used for internal tests

Port voltage

measurement

LSB= 58 mV

V= Decimal ×58

mV

VMAIN voltage

measurement

LSB= 58 mV

V= Decimal ×58

mV

Port current

measurement

LSB= 238 μA

I= Decimal ×

238 μA

Real-time port

status indication.

For more

information, see

Table 1-2.

PD69101

Functional Description

and its subsidiaries

Datasheet

DS00004280A-page 8