PSD835G2-70UI datasheet(68/110 Pages) STMICROELECTRONICS

68 / 110 page

PSD835G2

PSD8XX Family

The

PSD835G2

Functional

Blocks

(cont.)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PLD

array

DBE

ALE

CNTL2

CNTL1

CNTL0

Addr.

1 = off

PMMR2

Bit 0 0 = Address A[7:0] inputs to the PLD AND array are connected.

1 = Address A[7:0] inputs to the PLD AND array are disconnected, saving power.

Note: In 80C51 mode, A[7:1] comes from Port F (PF1-PF3) and AD10 [3:0].

Bit 2 0 = Cntl0 input to the PLD AND array is connected.

1 = Cntl0 input to PLD AND array is disconnected, saving power.

Bit 3 0 = Cntl1 input to the PLD AND array is connected.

1 = Cntl1 input to PLD AND array is disconnected, saving power.

Bit 4 0 = Cntl2 input to the PLD AND array is connected.

1 = Cntl2 input to PLD AND array is disconnected, saving power.

Bit 5 0 = ALE input to the PLD AND array is connected.

1 = ALE input to PLD AND array is disconnected, saving power.

Bit 6 0 = DBE input to the PLD AND array is connected.

1 = DBE input to PLD AND array is disconnected, saving power.

**Unused bits should be set to 0.

**Refer to Table 14 the signals that are blocked on pins CNTL0-2.

Bit 1 0 = Automatic Power Down (APD) is disabled.

1 = Automatic Power Down (APD) is enabled.

Bit 3 0 = PLD Turbo is on.

1 = PLD Turbo is off, saving power.

Bit 4 0 = CLKIN input to the PLD AND array is connected.

Every CLKIN change will power up the PLD when Turbo bit is off.

1 = CLKIN input to PLD AND array is disconnected, saving power.

Bit 5 0 = CLKIN input to the PLD Micro

⇔Cells is connected.

1 = CLKIN input to PLD Micro

⇔Cells is disconnected, saving power.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PLD

APD

Mcell clk

Array clk

Turbo

Enable

1 = off

1 = on

Table 27. Power Management Mode Registers (PMMR0, PMMR2)**

PMMR0

***Bits 0, 2, 6, and 7 are not used, and should be set to 0.

***The PMMR0, and PMMR2 register bits are cleared to zero following power up.

***Subsequent reset pulses will not clear the registers.

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