KX1400EW Keterex, KX1400EW Datasheet - Page 12

• Manufacturer Part Number: KX1400EW
• Description: Audio D/A Converter ICs KX1400 Audio Playback IC
• Manufacturer: Keterex

Specifications of KX1400EW

• Resolution: 12 bit
• Operating Supply Voltage: 2.7 V to 5.5 V
• Operating Temperature Range: - 40 C to + 85 C
• Maximum Power Dissipation: 120 mW
• Mounting Style: SMD/SMT
• Number Of Dac Outputs: 2
• Power Consumption: 320 mW
• Supply Current: 50 mA
• Thd Plus Noise: 40 dB
• Package / Case: SOIC-20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

operate in pass-thru mode. In pass-thru mode, the MCU host interface pins are mapped directly to the
external memory interface. No serial memory access protocol is implemented. The device driving the
MCU interface pins must implement the appropriate protocol to access the connected serial memory.
KX1400 Audio Playback IC
6.3.4. Programming External Memory In-System
External Flash and EEPROM memory can be programmed in-system via the KX1400.
external memory directly, a command is sent via the MCU host interface to configure the KX1400 to
12
Figure 6.2. Example External Memory Organization (MSIZE=1)
FFFFFFh
FFFFFBh
0002FEh
0002FFh
000006h
000005h
000003h
000000h
Table 6.4. Pin Mapping in Pass-Thru Mode
INTERFACE
BUSY
MCU
SCL
SDI
CS
¯¯
More Phrase 1 Commands
Phrase 1 – First Command
More Phrase 0 Commands
Phrase 0 – First Command
Stop Command
Stop Command
FFh
00h
02h
00h
00h
06h
.
.
.
.
EXTERNAL MEMORY
INTERFACE
MCLK
MSSL
MOSI
MISO
To access