User Manual

JukeBlox Networked Media Modules – CR Series
Datasheet
SMSC CR860/CR870 24 Revision 3.8 (01-11-12)
SMSC CONFIDENTIAL
J1 – LCD Connector
Function GPIO IC PIN Signal Signal IC PIN GPIO Function
GND
1
2
GND
Y7 LCDD0
3
4
LCDD1 W7
V7 LCDD2
5
6
LCDD3 Y6
W6 LCDD4
7
8
LCDD5 V6
U6 LCDD6
9
10
LCDD7 Y5
W5 LCDD8
11
12
LCDD9 V5
U5 LCDD10
13
14
LCDD11 Y4
W4 LCDD12
15
16
LCDD13 V4
U4 LCDD14
17
18
LCDD15 Y3
W3 LCDD16
19
20
LCDD17 Y2
GND
21
22
GND
Y9 LCDCLK
23
24
LCDCTRL0 W9
Y8 LCDCTRL1
25
26
LCDCTRL2 W8
V8 LCDCTRL3
27
28
GND
GND
29
30
GND
PIN Number
LCD Interface
LCD Interface
LCD Interface
LCD Interface
Note: The IC PIN column indicates the pin number on the DM860 or DM870
integrated circuit. This allows for easy cross-reference to the DM860 or DM870
datasheet information.
9 Application Guidelines
9.1 Power Supply sequencing and Reset Timing
There are strict power sequencing and reset timing requirements.
• Power up the I/O voltage (3.3V) first and hold NRESET_MOD low.
• The core voltage (1.2V) must never be higher than (I/O voltage +0.5 V).
• The core voltage (1.2V) must be within the specified core voltage limits less than 300ms after the I/O voltage
(3.3V) reaches the specified I/O voltage limits.
• Throughout the power down process, the 3.3V supply must maintain a higher voltage than the 1.2V supply,
until both have reached ground potential.
• To assure a proper IC reset, the power supplies must be present for a minimum time of 2ms before
NRESET_MOD is de-asserted.
Please see the power and reset timing figure in Section 9.1.1 below.