Texas Instruments DSP-Codec, Руководство пользователя, Страница: 13 / 24

DSP-to-Platform
2-3 Digital Interface
2.2 DSP-to-Platform
The development platform mates with TI DSKs via the 80-pin Samtec
connector located at J2. Consult the schematic for pinout details.
2.3 Platform-to-Codec
Codec EVMs mate with the development platform via a 40-pin Samtec
connector located at J3. The mating connector (Samtec part number,
SSW-120-22-F-D-VS-K)
is used on the EVM board to provide the electrical
connections necessary for various codec EVMs. Consult Samtec at
www.samtec.com or 1-800-SAMTEC-9 for more information.
The pinout for the 40-pin connector is given in Table 2-1.
Table 2-1. J2 Connector Pinouts
Pin Number Signal Description
J2.1 MCLK Master clock
J2.2 DGND Digital ground
J2.3 SCLK Serial data clock
J2.4 DGND Digital ground
J2.5 DIN Data in
J2.6 DGND Digital ground
J2.7 DOUT Data out
J2.8 Reserved Reserved for future use
J2.9 FS Frame sync
J2.10 Reserved Reserved for future use
J2.11 CLKX Transmit clock
J2.12 Reserved Reserved for future use
J2.13 FSX Frame sync transmit
J2.14 Reserved Reserved for future use
J2.15 DX Data transmit
J2.16 DR Data receive
J2.17 RESET Global reset for all devices
J2.18 FSR Frame sync receive
J2.19 PWDN Global power down for all devices
J2.20 CLKR Receive clock
J2.21 CNTLb GPIO pin
J2.22 CNTLa GPIO pin
J2.23 STATb Status pin
J2.24 STATa Status pin
J2.25 3.3V_D Digital 3.3 V
J2.26 Reserved Reserved for future use
J2.27 3.3V_D Digital 3.3 V
J2.28 DGND Digital ground
J2.29 1.8V_D Digital 1.8 V
J2.30 DGND Digital ground
J2.31 1.8V_D Digital 1.8 V