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ES2828 Datasheet(PDF) 5 Page - List of Unclassifed Manufacturers |
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5 / 6 page ESS Technology, Inc. SAM0402-050301 5 ES2898/ES2828 PRODUCT BRIEF Table 2 ES2828 Pin Descriptions Names Pin Numbers I/O Definitions DPBX 1 I Digital PBX detection. ACLINK/GPIO_B 2 I/O Default for CHI bus mode (internal pulldown). Pull high for AC-Link mode. DVDD 3, 23, 29 P 3.3V digital power. AGND 4:6, 18 I Analog ground. AUX+ 7 I Codec analog auxiliary differential positive input. The DC level is Vcm, and the full-scale input is either 0.22 Vp-p ±5% or 1.1 Vp-p±5%, depending on the gain setting. AUX- 8 I Codec analog auxiliary differential negative input. The DC level is Vcm, and the full-scale input is either 0.22 Vp-p ±5% or 1.1 Vp-p±5%, depending on the gain setting. RXIN+ 9 I Codec analog differential positive input. The DC level is Vcm, and the full-scale input is either 0.22 Vp-p ±5% or 1.1 Vp-p±5%, depending on the gain setting. RXIN- 10 I Codec analog differential negative input. The DC level is Vcm, and the full-scale input is either 0.22 Vp-p ±5% or 1.1 Vp-p±5%, depending on the gain setting. AVDD 11 I Analog 5.0V supply. VCM 12 O Common mode voltage bypass 1. Has a range of 2.16V±5%. Bypass to VCBP with 0.1- µF ceramic chip capacitor parallel with 10- µF tantalum capacitor. VCBP 13 I Ground pin for VCM. VREF 14 O Voltage reference bypass. Has a range of 1.2356V±5%. Bypass to VRBP with 0.1- µF ceramic chip capacitor parallel with 10- µF tantalum capacitor. VRBP 15 I Ground pin for VREF. TX+ 16 O Codec positive analog output. The DC level is Vcm, and the full-scale ac output is either 2.8V p-p±5% or 1.4V p-p±5%, depending on the gain setting. The maximum loading is 1k Ω, in parallel with 20 pF for modem applications. For audio applications with low-impedance load, the maximum distortion-free (THD <–60 db) current is 10 mA rms. TX- 17 O Codec negative analog output. The DC level is Vcm, and the full-scale ac output is either 2.8V p-p±5% or 1.4V p-p±5%, depending on the gain setting. The maximum loading is 1k Ω, in parallel with 20 pF for modem applications. For audio applications with low-impedance load, the maximum distortion-free (THD <–60 db) current is 10 mA rms. VCMX 19 O Codec common mode reference voltage output. 2.16V±5%, maximum current ±500 µA, maximum capacitive load 20 pF. HCT 20 I Codec digital input mode control. DGND 21, 44 P Digital ground. CTST 22 I Codec sigma delta modulator test port output enable. SI 24 I Serial port input (default). SO 25 O Serial port output without VAUX support. SC 26 I/O Serial port clock output. While input must be TTL-compatible, should be able to handle 3.3V input. FS 27 O Serial port frame sync. CKO 28 O 3.3V clock output. XTALO 30 O 24.576-MHz crystal oscillator output. XTALI 31 I 24.576-MHz crystal oscillator input. RST# 32 I Reset. |
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