STI5512 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STI5512

SET TOP BOX BACKEND DECODER WITH INTEGRATED HOST PROCESSOR

STMicroelectronics 

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CONFIDENTIAL STi5512

Peripheral inputs connected to the alternative function input of a PIO bit are permanently connected to the input pin.

The output signal from a peripheral is only connected when the PIO bit is configured into either push-pull or open drain

driver alternative function mode.

I/O pin

Push-pull

tristate

open drain

weak pull-up

Alternative function

Alternative function output

10

Output latch

Alternative function input

Input latch

Figure 4 I/O port pin

Table 15 shows the assignment of the alternative functions to the PIO bits. Parentheses ( ) in the table indicate

suggested or possible pin usages as a PIO, not an alternative function connection.

Port bit

0

1

2

3

Alternative function of PIO pins

PIO port 0

PIO port 1

ASC0TxD or

Sc1DataOut

ASC0TRxD or

Sc1DataIn

Sc1ClkGenExtClk

Sc1Clk

SSC0 MTSR

SSC0 MRST

SSC0 SClk

PWMOut0

PIO port 2

ASC2TxD or

Sc0DataOut

ASC2RxD or

Sc0DataIn

Sc0ClkGenExtClk

Sc0Clk

PIO port 3

SSC1 MTSR

SSC1 MRST

SSC1 SClk

CaptureIn0

4

(Sc1RST)

PWMOut1

(Sc0RST)

CaptureIn1

5

(Sc1CmdVcc)

6

(Sc1CmdVpp)

Sc1Dir

7

(Sc1Detect)

ASC1TxD

ASC1RxD

PWMOut2

(Sc0CmdVcc)

(Sc0CmdVpp)

Sc2Dir

(Sc0Detect)

CaptureIn2

CompareOut2

1284InnotOut

Table 15 Alternative function of PIO pins

PIO port 4

ASC3TxD

ASC3RxD

TtxtClockIn

1284PeriphLogicH/

ASC3 CTS

1284HostLogicH/ASC3

RTS

Interrupt2

Interrupt3

TtxtData

18//23

7110123 B

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