IDT82P2288 データシートの表示（PDF） - Integrated Device Technology
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IDT82P2288 Datasheet PDF : 384 Pages
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IDT82P2288
OCTAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
Name
GPIO[0]
GPIO[1]
THZ
INT
REFR
CS
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
A[8]
A[9]
A[10]
D[0] / SDO
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
MPM
RW / WR / SDI
Type Pin No.
Description
Output / Input E13 General Purpose I/O [1:0]
D13 These two pins can be defined as input pins or output pins by the DIR[1:0] bits (b1~0, T1/J1-006H / b1~0, E1-006H)
respectively. When the pins are input, their polarities are indicated by the LEVEL[1:0] bits (b3~2, T1/J1-006H / b3~2,
E1-006H) respectively. When the pins are output, their polarities are controlled by the LEVEL[1:0] bits (b3~2, T1/J1-
006H / b3~2, E1-006H) respectively.
GPIO[1:0] are Schmitt-trigger input/output with a pull-up resistor.
Input
Output
B16 THZ: Transmit High-Z
A high level on this pin puts all the TTIPn/TRINGn pins into high impedance state.
THZ is a Schmitt-trigger input.
T11 INT: Interrupt (Active Low)
This is the open drain, active low interrupt output. This pin will stay low until all the active unmasked interrupt indica-
tion bits are cleared.
Output
C16 REFR:
This pin should be connected to ground via an external 10K resistor.
Input
R11 CS: Chip Select (Active Low)
This pin must be asserted low to enable the microprocessor interface. The signal must be asserted high at least
once after power up to clear the internal test modes. A transition from high to low must occur on this pin for each
Read/Write operation and can not return to high until the operation is completed.
CS is a Schmitt-trigger input.
Input
M7 A[10:0]: Address Bus
N7 In parallel mode, the signals on these pins select the register for the microprocessor to access.
P7 In SPI mode, these pins should be connected to ground.
R7 A[10:0] are Schmitt-trigger inputs.
T7
M8
N8
P8
R8
T8
P9
Output / Input M10 D[7:0]: Bi-directional Data Bus
T10 In parallel mode, the signals on these pins are the data for Read / Write operation.
R10 In SPI mode, the D[7:1] pins should be connected to the ground through a 10 K resistor.
P10 D[7:0] are Schmitt-trigger inputs/outputs.
M9
N9 SDO: Serial Data Output
T9 In SPI mode, the data is serially output on this pin.
R9
Input
M11 MPM: Micro Controller Mode
In parallel mode, set this pin low for Motorola mode or high for Intel mode.
In SPI mode, set this pin to a fixed level (high or low). This pin is useless in SPI mode.
MPM is a Schmitt-trigger input.
Input
P11 RW: Read / Write Select
In parallel Motorola mode, this pin is active high for read operation and active low for write operation.
WR: Write Strobe (Active Low)
In parallel Intel mode, this pin is active low for write operation.
SDI: Serial Data Input
In SPI mode, the address/control and/or data are serially input on this pin.
RW / WR / SDI is a Schmitt-trigger input.
Pin Description
8
March 22, 2004
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