User's Manual

Data Sheet : CR Series
JukeBlox Networked Media Modules
dat _CR860_CR870_2_5_dat asheet.doc
CONFIDENTI AL Version 2.5 – February 10
th
2010 - Page 9 of 13
The pinout and signal nam es are shown on t he next page. The following t able provides an overview
for t he m ost im port ant cont rol and int erface signals.
Key Connections
Signa l( s) Conne ct or I D Pin
N um be r( s)
De script ion
J2 3, 4, 5, 6 I nput volt age; + 3.3V
J2 9, 10, 11, 12 I nput volt age; + 1.2V
J3 4, 6 I nput volt age; + 1.8V
J3 10 I nput volt age; + 3.3V
VI N
J3 12 I nput volt age; + 1.5V
SPI _DOUT
SPI _DI N
SPI _CLK
SPI _NCS0, 1
J2
J2
J2
J2
25
27
29
30, 32
SPI bus from DM870’s SPI controller.
RXD1, TXD1 J2 35, 37 3.3V logic level UART I / Os for t he debug UART.
Provide ext ernal RS- 232 t ransceiver t o connect to a
PC’s COM port .
NRESET J2 34 Low- act iv e input t o reset t he m odule;
int ernal 10K pull- up
NPD_RF J2 119 Low- act iv e input t o shut down t he pow er for t he
802.11 Rf part;
int ernal 10K pull- up
AOUTLP/ AOUTLN J2 63, 65
AOUTRP/ AOUTRN J2 60, 58
Different ial st ereo out put from PWM- DAC.
BI ST act ivat e J2 48 Low- act iv e input to invoke t he product ion BI ST;
DM870- int ernal pull- up
Fact ory Reset J2 68 High- act ive input t o reset t he configuration;
DM870- int ernal pull- down
I R input J2 70 I nfr ar ed sensor input. This is a Schm itt - Trigger input
and can handle interrupt input s w ith slow slopes.
ETH_NRESET J2 72 Low - act ive reset for t he on- board Ethernet phy. This
out put is driven by t he DM870 and is not suit ed for
ot her purpose.
SDA, SCL J2 73, 75 I2C bus cr eated by GPI O- 14 and GPI O- 13.
No inter nal pull- ups; if I 2C is to be used, please add
the proper ext ernal pull- up resist or s.
ETH_LED_ACT
ETH_LED_SPEED
J2
J2
100
102
3.3V push- pull out put s ( m ax . ± 12m A) t o drive t he
Ethernet LEDs.
A low- lev el indicat es 100Mbps m ode and act ivit y
respectiv ely.