DS4830_1110 Datasheet, PDF (15/29 Pages) Maxim Integrated Products – Optical Microcontroller

DS4830
Optical Microcontroller
Pin Description (continued)
PIN NAME
INPUT
STRUCTURE(S)
OUTPUT POWER-ON
STRUCTURE STATE
SELECTABLE FUNCTIONS
(FIRST COLUMN IS DEFAULT FUNCTION)
PORT
40 DACPW7
Digital
DAC7, FS
= REFINB
Push-Pull
55µA Pullup _{or Internal}
PW7
—
Reference
—
P2.7
—
EP
Exposed Pad
—
(Connect to GND)
GND
—
—
—
—
—
Note: Bypass V_DD, REG285, and REG18 each with a 1µF X5R capacitor to ground. All input-only pins and open-drain outputs are
high impedance after V_DD exceeds V_BO and prior to code execution. Pins configured as GPIO have a weak internal pullup. See the
Selectable Functions table for more information.
Selectable Functions
FUNCTION NAME
ADC-1P8
ADC-D[7:0][P/N]
ADC-REFIN[A/B]
ADC-S[15:0]
ADC-SH[P/N][1:0]
ADC-VDD
DAC[7:0]
MCL, MCS, MDIO
MSCL, MSDA
MSPICK, MSPICS, MSPIDI,
MSPIDO
P0.n, P1.n, P2.n, P6.n
PW[9:0]
RST
SCL, SDA
SHEN[1:0]
SSPICK, SSPICS, SSPIDI,
SSPIDO
TCK, TDI, TDO, TMS
DESCRIPTION
1.8V Regulator Monitor Input to ADC
Differential Inputs to ADC. Also used for external temperature sensors.
REFINA and REFINB Monitor Inputs to ADC
Single-Ended Inputs to ADC
Sample/Hold Inputs 1 and 0
V_DD Monitor Input to ADC
Voltage DAC Outputs
Maxim Proprietary 3-Wire Interface, MCL (Clock), MCS (Chip Select), MDIO (Data). Used to
control the MAX3798 family of high-speed laser drivers.
I²C Master Interface: MSCL (I²C Master Slave), MSDA (I²C Master Data)
SPI Master Interface: MSPICK (Clock), MSPICS (Active-Low Chip Select), MSPIDI (Data In),
MSPIDO (Data Out)
General-Purpose Inputs/Outputs. Can also function as interrupts.
PWM Outputs
Used by JTAG and as Active-Low Reset for Device
I²C Slave Interface: SCL (I²C Slave Clock), SDA (I²C Slave Data). These also function as a
password-protected programming interface.
Sample/Hold Enable Inputs. Can also function as interrupts.
SPI Slave Interface: SSPICK (Clock), SSPICS (Active-Low Chip Select), SSPIDI (Data In), SSPIDO
(Data Out). In SPI slave mode, the I²C slave interface is disabled.
JTAG Interface Pins. Also includes RST.
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