MAX4358ECE+ Maxim Integrated Products, MAX4358ECE+ Datasheet - Page 32

• Manufacturer Part Number: MAX4358ECE+
• Description: IC VIDEO CROSSPOINT SWIT 144TQFP
• Manufacturer: Maxim Integrated Products

Specifications of MAX4358ECE+

• Function: Video Crosspoint Switch
• Circuit: 1 x 32:16
• Voltage Supply Source: Single, Dual Supply
• Voltage - Supply, Single/dual (±): 5V, ± 3 V ~ 5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 144-TQFP, 144-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

In Mode 0, data at DIN passes directly to DOUT
through the data routing gate (Figure 3). In this configu-
ration, the 16-bit control word is simultaneously sent to
all chips in an array of up to 16 addresses.
Drive MODE to logic high to select Mode 1. A single
112-bit control word, consisting of sixteen 7-bit control
words, programs all outputs. The 112-bit control word’s
first 7-bit control word (MSBs) programs output 15, and
the last 7-bit control word (LSBs) programs output 0
(Table 7 and Figures 4 and 5). Data clocked into the
112-bit complete matrix mode register is latched on the
falling edge of UPDATE, and the outputs are immedi-
ately updated.
Complete Matrix Mode (Mode = 1) is convenient for
programming the matrix at power-up. In a large matrix
consisting of many MAX4358s, all the devices can be
programmed by sending a single bit stream equal to n
x 112 bits where n is the number of MAX4358 devices
on the bus. The first 112-bit data word programs the
last in-line MAX4358 (see Matrix Programming under
the Applications Information section).
32 x 16 Nonblocking Video Crosspoint Switch
with On-Screen Display Insertion and I/O Buffers
32
Table 2. 16-Bit Serial Control Word Bit Assignments (Mode 0: Individual Output
Address Mode)
15 (MSB)
0 (LSB)
______________________________________________________________________________________
BIT
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Complete Matrix Mode (MODE = 1)
Output Address B3
Output Address B2
Output Address B1
Output Address B0
Input Address 4
Input Address 3
Input Address 2
Input Address 1
Input Address 0
IC Address A3
IC Address A2
IC Address A1
IC Address A0
Output Enable
Gain Set
NAME
X
Initialization String
Don’t Care
MSB of selected chip address
LSB of selected chip address
MSB of output buffer address
LSB of output buffer address
Enable bit for output, 0 = disable, 1 = enable.
Gain Select for output buffer, 0 = gain of +1V/V, 1 = gain of +2V/V.
MSB of input channel select address
LSB of input channel select address
The MAX4358 features an asynchronous dedicated 2:1
Mux for each output buffer amplifier. Fast 40ns switch-
ing times enable pixel switching for on-screen-display
(OSD) information such as text or other picture-in-pic-
ture signals (Figure 1). OSDFILL_ inputs are buffered
analog inputs connected to each dedicated OSD Mux.
Drive the dedicated OSDKEY_ digital input to switch
between the programmed IN_ input from the crosspoint
switch matrix and the OSDFILL_. A logic low on
OSDKEYi routes the analog signal at OSDFILLi to the
OUTi output buffer. OSDKEY_ control does not affect
the crosspoint switch matrix programming or the out-
put-buffer enable/disable or gain-set programming.
The MAX4358 features an asynchronous bidirectional
RESET with an internal 20kΩ pullup resistor to V
When RESET is pulled low either by internal circuitry, or
driven externally, the analog output buffers are latched
into a high-impedance state. After RESET is released,
the output buffers remain disabled. The outputs may be
enabled by sending a new 112-bit data word or a 16-bit
individual output address word. A reset is initiated from
any of three sources. RESET can be driven low by
external circuitry to initiate a reset, or RESET can be
pulled low by internal circuitry during power-up (power-
on-reset) or thermal shutdown.
On-Screen-Display (OSD) Fast MUX
FUNCTION
RESET
DD
.